./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:10:04,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:10:04,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:10:04,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:10:04,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:10:04,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:10:04,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:10:04,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:10:04,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:10:04,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:10:04,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:10:04,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:10:04,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:10:04,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:10:04,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:10:04,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:10:04,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:10:04,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:10:04,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:10:04,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:10:04,955 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:10:04,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:10:04,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:10:04,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:10:04,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:10:04,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:10:04,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:10:04,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:10:04,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:10:04,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:10:04,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:10:04,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:10:04,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:10:04,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:10:04,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:10:04,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:10:04,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:10:04,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:10:04,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:10:04,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:10:04,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:10:04,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:10:04,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-14 14:10:05,006 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:10:05,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:10:05,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:10:05,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:10:05,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 14:10:05,009 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 14:10:05,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:10:05,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:10:05,010 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:10:05,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:10:05,011 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 14:10:05,011 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:10:05,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:10:05,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 14:10:05,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:10:05,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 14:10:05,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 14:10:05,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 14:10:05,013 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 14:10:05,014 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 14:10:05,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:10:05,014 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:10:05,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 14:10:05,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:10:05,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:10:05,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 14:10:05,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:10:05,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:10:05,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 14:10:05,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 14:10:05,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:10:05,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 14:10:05,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 14:10:05,017 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2022-07-14 14:10:05,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:10:05,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:10:05,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:10:05,263 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:10:05,263 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:10:05,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-07-14 14:10:05,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396595fbd/ae031276af764311b2f84267bf9f0751/FLAG41f2ff13f [2022-07-14 14:10:05,755 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:10:05,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-07-14 14:10:05,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396595fbd/ae031276af764311b2f84267bf9f0751/FLAG41f2ff13f [2022-07-14 14:10:06,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396595fbd/ae031276af764311b2f84267bf9f0751 [2022-07-14 14:10:06,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:10:06,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:10:06,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:10:06,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:10:06,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:10:06,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:10:06" (1/1) ... [2022-07-14 14:10:06,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56bf6737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:10:06, skipping insertion in model container [2022-07-14 14:10:06,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:10:06" (1/1) ... [2022-07-14 14:10:06,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:10:06,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:10:06,499 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2022-07-14 14:10:06,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:10:06,535 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:10:06,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2022-07-14 14:10:06,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:10:06,631 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:10:06,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:10:06 WrapperNode [2022-07-14 14:10:06,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:10:06,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:10:06,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:10:06,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:10:06,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:10:06" (1/1) ... [2022-07-14 14:10:06,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:10:06" (1/1) ... [2022-07-14 14:10:06,687 INFO L137 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-07-14 14:10:06,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:10:06,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:10:06,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:10:06,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:10:06,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:10:06" (1/1) ... [2022-07-14 14:10:06,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:10:06" (1/1) ... [2022-07-14 14:10:06,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:10:06" (1/1) ... [2022-07-14 14:10:06,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:10:06" (1/1) ... [2022-07-14 14:10:06,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:10:06" (1/1) ... [2022-07-14 14:10:06,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:10:06" (1/1) ... [2022-07-14 14:10:06,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:10:06" (1/1) ... [2022-07-14 14:10:06,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:10:06,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:10:06,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:10:06,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:10:06,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:10:06" (1/1) ... [2022-07-14 14:10:06,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:10:06,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:10:06,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-14 14:10:06,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-14 14:10:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 14:10:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 14:10:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-14 14:10:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 14:10:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 14:10:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-14 14:10:06,783 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-14 14:10:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 14:10:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 14:10:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:10:06,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:10:06,785 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-14 14:10:06,900 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:10:06,901 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:10:07,106 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:10:07,114 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:10:07,115 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-14 14:10:07,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:10:07 BoogieIcfgContainer [2022-07-14 14:10:07,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:10:07,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 14:10:07,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 14:10:07,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 14:10:07,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 02:10:06" (1/3) ... [2022-07-14 14:10:07,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e7e8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:10:07, skipping insertion in model container [2022-07-14 14:10:07,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:10:06" (2/3) ... [2022-07-14 14:10:07,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e7e8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:10:07, skipping insertion in model container [2022-07-14 14:10:07,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:10:07" (3/3) ... [2022-07-14 14:10:07,125 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2022-07-14 14:10:07,129 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-14 14:10:07,136 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 14:10:07,136 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-14 14:10:07,137 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-14 14:10:07,201 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-14 14:10:07,229 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:10:07,239 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 117 transitions, 239 flow [2022-07-14 14:10:07,242 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 117 transitions, 239 flow [2022-07-14 14:10:07,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 117 transitions, 239 flow [2022-07-14 14:10:07,294 INFO L129 PetriNetUnfolder]: 14/150 cut-off events. [2022-07-14 14:10:07,294 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-14 14:10:07,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 150 events. 14/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 358 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2022-07-14 14:10:07,304 INFO L116 LiptonReduction]: Number of co-enabled transitions 3440 [2022-07-14 14:10:10,360 INFO L131 LiptonReduction]: Checked pairs total: 5937 [2022-07-14 14:10:10,360 INFO L133 LiptonReduction]: Total number of compositions: 115 [2022-07-14 14:10:10,367 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 35 transitions, 75 flow [2022-07-14 14:10:10,392 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 174 states, 155 states have (on average 2.638709677419355) internal successors, (409), 173 states have internal predecessors, (409), 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) [2022-07-14 14:10:10,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:10:10,413 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@73e40eee, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@65079a88 [2022-07-14 14:10:10,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-07-14 14:10:10,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 155 states have (on average 2.638709677419355) internal successors, (409), 173 states have internal predecessors, (409), 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) [2022-07-14 14:10:10,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-14 14:10:10,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:10,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-14 14:10:10,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-07-14 14:10:10,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:10,425 INFO L85 PathProgramCache]: Analyzing trace with hash 14209050, now seen corresponding path program 1 times [2022-07-14 14:10:10,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:10,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858726858] [2022-07-14 14:10:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:10,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:10,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:10,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:10,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858726858] [2022-07-14 14:10:10,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858726858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:10,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:10:10,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:10:10,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347520830] [2022-07-14 14:10:10,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:10,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:10:10,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:10,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:10:10,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:10:10,658 INFO L87 Difference]: Start difference. First operand has 174 states, 155 states have (on average 2.638709677419355) internal successors, (409), 173 states have internal predecessors, (409), 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 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-07-14 14:10:10,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:10,727 INFO L93 Difference]: Finished difference Result 142 states and 256 transitions. [2022-07-14 14:10:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:10:10,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-07-14 14:10:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:10,737 INFO L225 Difference]: With dead ends: 142 [2022-07-14 14:10:10,737 INFO L226 Difference]: Without dead ends: 127 [2022-07-14 14:10:10,738 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 [2022-07-14 14:10:10,741 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:10,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:10:10,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-14 14:10:10,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-07-14 14:10:10,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 118 states have (on average 1.9152542372881356) internal successors, (226), 126 states have internal predecessors, (226), 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) [2022-07-14 14:10:10,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 226 transitions. [2022-07-14 14:10:10,785 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 226 transitions. Word has length 4 [2022-07-14 14:10:10,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:10,785 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 226 transitions. [2022-07-14 14:10:10,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-07-14 14:10:10,785 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 226 transitions. [2022-07-14 14:10:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 14:10:10,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:10,788 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-07-14 14:10:10,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 14:10:10,791 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-07-14 14:10:10,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:10,793 INFO L85 PathProgramCache]: Analyzing trace with hash 770008561, now seen corresponding path program 1 times [2022-07-14 14:10:10,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:10,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507648034] [2022-07-14 14:10:10,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:10,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:10:10,831 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:10:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:10:10,886 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:10:10,886 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 14:10:10,887 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-07-14 14:10:10,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-07-14 14:10:10,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-07-14 14:10:10,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-07-14 14:10:10,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-07-14 14:10:10,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-07-14 14:10:10,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-07-14 14:10:10,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-07-14 14:10:10,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-07-14 14:10:10,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-07-14 14:10:10,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-07-14 14:10:10,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 14:10:10,892 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-14 14:10:10,894 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-14 14:10:10,894 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-14 14:10:10,911 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-14 14:10:10,914 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:10:10,914 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 158 transitions, 328 flow [2022-07-14 14:10:10,915 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 158 transitions, 328 flow [2022-07-14 14:10:10,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 147 places, 158 transitions, 328 flow [2022-07-14 14:10:10,950 INFO L129 PetriNetUnfolder]: 24/233 cut-off events. [2022-07-14 14:10:10,950 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-14 14:10:10,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 233 events. 24/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 696 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 151. Up to 6 conditions per place. [2022-07-14 14:10:10,960 INFO L116 LiptonReduction]: Number of co-enabled transitions 10160 [2022-07-14 14:10:14,384 INFO L131 LiptonReduction]: Checked pairs total: 23693 [2022-07-14 14:10:14,384 INFO L133 LiptonReduction]: Total number of compositions: 152 [2022-07-14 14:10:14,385 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 58 transitions, 128 flow [2022-07-14 14:10:14,501 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3241 states, 3128 states have (on average 3.7691815856777495) internal successors, (11790), 3240 states have internal predecessors, (11790), 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) [2022-07-14 14:10:14,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:10:14,506 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@73e40eee, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@65079a88 [2022-07-14 14:10:14,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-07-14 14:10:14,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 3241 states, 3128 states have (on average 3.7691815856777495) internal successors, (11790), 3240 states have internal predecessors, (11790), 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) [2022-07-14 14:10:14,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 14:10:14,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:14,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 14:10:14,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-07-14 14:10:14,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:14,518 INFO L85 PathProgramCache]: Analyzing trace with hash 774831356, now seen corresponding path program 1 times [2022-07-14 14:10:14,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:14,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101173887] [2022-07-14 14:10:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:14,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:14,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:14,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101173887] [2022-07-14 14:10:14,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101173887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:14,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:10:14,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:10:14,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105257517] [2022-07-14 14:10:14,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:14,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:10:14,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:14,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:10:14,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:10:14,563 INFO L87 Difference]: Start difference. First operand has 3241 states, 3128 states have (on average 3.7691815856777495) internal successors, (11790), 3240 states have internal predecessors, (11790), 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 2.5) internal successors, (5), 2 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) [2022-07-14 14:10:14,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:14,669 INFO L93 Difference]: Finished difference Result 3209 states and 8833 transitions. [2022-07-14 14:10:14,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:10:14,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 5 [2022-07-14 14:10:14,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:14,691 INFO L225 Difference]: With dead ends: 3209 [2022-07-14 14:10:14,691 INFO L226 Difference]: Without dead ends: 3119 [2022-07-14 14:10:14,691 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 [2022-07-14 14:10:14,692 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:14,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 14 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:10:14,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2022-07-14 14:10:14,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3119. [2022-07-14 14:10:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3119 states, 3016 states have (on average 2.844164456233422) internal successors, (8578), 3118 states have internal predecessors, (8578), 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) [2022-07-14 14:10:14,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 8578 transitions. [2022-07-14 14:10:14,798 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 8578 transitions. Word has length 5 [2022-07-14 14:10:14,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:14,798 INFO L495 AbstractCegarLoop]: Abstraction has 3119 states and 8578 transitions. [2022-07-14 14:10:14,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-07-14 14:10:14,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 8578 transitions. [2022-07-14 14:10:14,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-14 14:10:14,799 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:14,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:10:14,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 14:10:14,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-07-14 14:10:14,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:14,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1590042749, now seen corresponding path program 1 times [2022-07-14 14:10:14,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:14,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342953052] [2022-07-14 14:10:14,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:14,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:14,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:14,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:14,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342953052] [2022-07-14 14:10:14,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342953052] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:14,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:10:14,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:10:14,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307954290] [2022-07-14 14:10:14,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:14,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 14:10:14,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:14,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 14:10:14,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 14:10:14,922 INFO L87 Difference]: Start difference. First operand 3119 states and 8578 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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) [2022-07-14 14:10:15,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:15,042 INFO L93 Difference]: Finished difference Result 2813 states and 7702 transitions. [2022-07-14 14:10:15,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 14:10:15,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 [2022-07-14 14:10:15,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:15,058 INFO L225 Difference]: With dead ends: 2813 [2022-07-14 14:10:15,058 INFO L226 Difference]: Without dead ends: 2813 [2022-07-14 14:10:15,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 14:10:15,060 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:15,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 23 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:10:15,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2022-07-14 14:10:15,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2813. [2022-07-14 14:10:15,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2728 states have (on average 2.8233137829912023) internal successors, (7702), 2812 states have internal predecessors, (7702), 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) [2022-07-14 14:10:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 7702 transitions. [2022-07-14 14:10:15,136 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 7702 transitions. Word has length 7 [2022-07-14 14:10:15,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:15,136 INFO L495 AbstractCegarLoop]: Abstraction has 2813 states and 7702 transitions. [2022-07-14 14:10:15,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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) [2022-07-14 14:10:15,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 7702 transitions. [2022-07-14 14:10:15,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:10:15,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:15,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:10:15,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 14:10:15,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-07-14 14:10:15,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:15,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1463231657, now seen corresponding path program 1 times [2022-07-14 14:10:15,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:15,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935830184] [2022-07-14 14:10:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:15,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:10:15,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:15,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935830184] [2022-07-14 14:10:15,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935830184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:15,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:10:15,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:10:15,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912609498] [2022-07-14 14:10:15,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:15,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:10:15,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:15,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:10:15,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:10:15,183 INFO L87 Difference]: Start difference. First operand 2813 states and 7702 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) [2022-07-14 14:10:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:15,259 INFO L93 Difference]: Finished difference Result 2581 states and 7038 transitions. [2022-07-14 14:10:15,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:10:15,260 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 [2022-07-14 14:10:15,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:15,273 INFO L225 Difference]: With dead ends: 2581 [2022-07-14 14:10:15,274 INFO L226 Difference]: Without dead ends: 2581 [2022-07-14 14:10:15,274 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 [2022-07-14 14:10:15,276 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 33 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:15,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 12 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:10:15,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2022-07-14 14:10:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2581. [2022-07-14 14:10:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2581 states, 2517 states have (on average 2.7961859356376637) internal successors, (7038), 2580 states have internal predecessors, (7038), 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) [2022-07-14 14:10:15,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2581 states to 2581 states and 7038 transitions. [2022-07-14 14:10:15,402 INFO L78 Accepts]: Start accepts. Automaton has 2581 states and 7038 transitions. Word has length 9 [2022-07-14 14:10:15,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:15,403 INFO L495 AbstractCegarLoop]: Abstraction has 2581 states and 7038 transitions. [2022-07-14 14:10:15,404 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) [2022-07-14 14:10:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2581 states and 7038 transitions. [2022-07-14 14:10:15,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:10:15,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:15,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:10:15,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 14:10:15,406 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-07-14 14:10:15,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:15,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1463231676, now seen corresponding path program 1 times [2022-07-14 14:10:15,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:15,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325671117] [2022-07-14 14:10:15,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:15,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:15,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:15,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325671117] [2022-07-14 14:10:15,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325671117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:15,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:10:15,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:10:15,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276748963] [2022-07-14 14:10:15,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:15,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:10:15,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:15,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:10:15,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:10:15,441 INFO L87 Difference]: Start difference. First operand 2581 states and 7038 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) [2022-07-14 14:10:15,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:15,487 INFO L93 Difference]: Finished difference Result 2349 states and 6374 transitions. [2022-07-14 14:10:15,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:10:15,487 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 [2022-07-14 14:10:15,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:15,498 INFO L225 Difference]: With dead ends: 2349 [2022-07-14 14:10:15,499 INFO L226 Difference]: Without dead ends: 2349 [2022-07-14 14:10:15,499 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 [2022-07-14 14:10:15,500 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:15,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 7 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:10:15,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2022-07-14 14:10:15,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2349. [2022-07-14 14:10:15,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2349 states, 2306 states have (on average 2.7640936686903728) internal successors, (6374), 2348 states have internal predecessors, (6374), 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) [2022-07-14 14:10:15,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 6374 transitions. [2022-07-14 14:10:15,560 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 6374 transitions. Word has length 9 [2022-07-14 14:10:15,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:15,560 INFO L495 AbstractCegarLoop]: Abstraction has 2349 states and 6374 transitions. [2022-07-14 14:10:15,560 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) [2022-07-14 14:10:15,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 6374 transitions. [2022-07-14 14:10:15,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:10:15,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:15,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:10:15,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 14:10:15,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-07-14 14:10:15,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:15,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1476725924, now seen corresponding path program 1 times [2022-07-14 14:10:15,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:15,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578620563] [2022-07-14 14:10:15,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:15,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:15,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:15,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578620563] [2022-07-14 14:10:15,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578620563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:15,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:10:15,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:10:15,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72714746] [2022-07-14 14:10:15,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:15,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:10:15,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:15,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:10:15,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:10:15,594 INFO L87 Difference]: Start difference. First operand 2349 states and 6374 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) [2022-07-14 14:10:15,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:15,690 INFO L93 Difference]: Finished difference Result 3166 states and 8480 transitions. [2022-07-14 14:10:15,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:10:15,691 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 [2022-07-14 14:10:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:15,709 INFO L225 Difference]: With dead ends: 3166 [2022-07-14 14:10:15,709 INFO L226 Difference]: Without dead ends: 3166 [2022-07-14 14:10:15,710 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 [2022-07-14 14:10:15,710 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 27 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:15,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 21 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:10:15,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2022-07-14 14:10:15,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 2818. [2022-07-14 14:10:15,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2776 states have (on average 2.8036743515850144) internal successors, (7783), 2817 states have internal predecessors, (7783), 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) [2022-07-14 14:10:15,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 7783 transitions. [2022-07-14 14:10:15,843 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 7783 transitions. Word has length 11 [2022-07-14 14:10:15,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:15,844 INFO L495 AbstractCegarLoop]: Abstraction has 2818 states and 7783 transitions. [2022-07-14 14:10:15,844 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) [2022-07-14 14:10:15,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 7783 transitions. [2022-07-14 14:10:15,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:10:15,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:15,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:10:15,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 14:10:15,849 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-07-14 14:10:15,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:15,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1476725925, now seen corresponding path program 1 times [2022-07-14 14:10:15,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:15,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656522005] [2022-07-14 14:10:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:15,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:15,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:15,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656522005] [2022-07-14 14:10:15,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656522005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:15,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:10:15,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 14:10:15,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773937067] [2022-07-14 14:10:15,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:15,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 14:10:15,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:15,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 14:10:15,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:10:15,921 INFO L87 Difference]: Start difference. First operand 2818 states and 7783 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-07-14 14:10:16,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:16,161 INFO L93 Difference]: Finished difference Result 3589 states and 9465 transitions. [2022-07-14 14:10:16,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 14:10:16,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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 [2022-07-14 14:10:16,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:16,178 INFO L225 Difference]: With dead ends: 3589 [2022-07-14 14:10:16,212 INFO L226 Difference]: Without dead ends: 3489 [2022-07-14 14:10:16,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-14 14:10:16,213 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 105 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:16,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 73 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:10:16,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2022-07-14 14:10:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 3219. [2022-07-14 14:10:16,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 3180 states have (on average 2.7528301886792454) internal successors, (8754), 3218 states have internal predecessors, (8754), 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) [2022-07-14 14:10:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 8754 transitions. [2022-07-14 14:10:16,290 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 8754 transitions. Word has length 11 [2022-07-14 14:10:16,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:16,290 INFO L495 AbstractCegarLoop]: Abstraction has 3219 states and 8754 transitions. [2022-07-14 14:10:16,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-07-14 14:10:16,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 8754 transitions. [2022-07-14 14:10:16,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:10:16,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:16,291 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-07-14 14:10:16,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-14 14:10:16,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-07-14 14:10:16,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:16,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1711369419, now seen corresponding path program 1 times [2022-07-14 14:10:16,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:16,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774342380] [2022-07-14 14:10:16,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:16,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:10:16,304 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:10:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:10:16,315 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:10:16,316 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 14:10:16,316 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-07-14 14:10:16,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2022-07-14 14:10:16,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2022-07-14 14:10:16,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2022-07-14 14:10:16,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2022-07-14 14:10:16,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2022-07-14 14:10:16,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2022-07-14 14:10:16,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2022-07-14 14:10:16,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2022-07-14 14:10:16,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2022-07-14 14:10:16,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2022-07-14 14:10:16,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2022-07-14 14:10:16,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2022-07-14 14:10:16,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2022-07-14 14:10:16,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2022-07-14 14:10:16,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-14 14:10:16,319 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:10:16,320 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-14 14:10:16,320 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-14 14:10:16,335 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-14 14:10:16,338 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:10:16,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 199 transitions, 419 flow [2022-07-14 14:10:16,339 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 199 transitions, 419 flow [2022-07-14 14:10:16,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 184 places, 199 transitions, 419 flow [2022-07-14 14:10:16,405 INFO L129 PetriNetUnfolder]: 34/316 cut-off events. [2022-07-14 14:10:16,405 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-14 14:10:16,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 316 events. 34/316 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1027 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2022-07-14 14:10:16,425 INFO L116 LiptonReduction]: Number of co-enabled transitions 20160 [2022-07-14 14:10:20,006 INFO L131 LiptonReduction]: Checked pairs total: 41661 [2022-07-14 14:10:20,007 INFO L133 LiptonReduction]: Total number of compositions: 187 [2022-07-14 14:10:20,008 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 80 transitions, 181 flow [2022-07-14 14:10:21,954 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 52132 states, 51545 states have (on average 5.00271607333398) internal successors, (257865), 52131 states have internal predecessors, (257865), 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) [2022-07-14 14:10:21,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:10:21,957 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@73e40eee, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@65079a88 [2022-07-14 14:10:21,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-07-14 14:10:22,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 52132 states, 51545 states have (on average 5.00271607333398) internal successors, (257865), 52131 states have internal predecessors, (257865), 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) [2022-07-14 14:10:22,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 14:10:22,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:22,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 14:10:22,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-07-14 14:10:22,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:22,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1180524963, now seen corresponding path program 1 times [2022-07-14 14:10:22,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:22,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062021589] [2022-07-14 14:10:22,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:22,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:22,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:22,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062021589] [2022-07-14 14:10:22,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062021589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:22,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:10:22,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:10:22,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025159096] [2022-07-14 14:10:22,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:22,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:10:22,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:22,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:10:22,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:10:22,358 INFO L87 Difference]: Start difference. First operand has 52132 states, 51545 states have (on average 5.00271607333398) internal successors, (257865), 52131 states have internal predecessors, (257865), 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 2.5) internal successors, (5), 2 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) [2022-07-14 14:10:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:23,131 INFO L93 Difference]: Finished difference Result 52100 states and 191629 transitions. [2022-07-14 14:10:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:10:23,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 5 [2022-07-14 14:10:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:23,871 INFO L225 Difference]: With dead ends: 52100 [2022-07-14 14:10:23,871 INFO L226 Difference]: Without dead ends: 51695 [2022-07-14 14:10:23,872 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 [2022-07-14 14:10:23,873 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:23,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:10:24,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51695 states. [2022-07-14 14:10:25,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51695 to 51695. [2022-07-14 14:10:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51695 states, 51118 states have (on average 3.719120466371924) internal successors, (190114), 51694 states have internal predecessors, (190114), 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) [2022-07-14 14:10:26,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51695 states to 51695 states and 190114 transitions. [2022-07-14 14:10:26,418 INFO L78 Accepts]: Start accepts. Automaton has 51695 states and 190114 transitions. Word has length 5 [2022-07-14 14:10:26,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:26,418 INFO L495 AbstractCegarLoop]: Abstraction has 51695 states and 190114 transitions. [2022-07-14 14:10:26,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-07-14 14:10:26,418 INFO L276 IsEmpty]: Start isEmpty. Operand 51695 states and 190114 transitions. [2022-07-14 14:10:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-14 14:10:26,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:26,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:10:26,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-14 14:10:26,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-07-14 14:10:26,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:26,420 INFO L85 PathProgramCache]: Analyzing trace with hash 622104690, now seen corresponding path program 1 times [2022-07-14 14:10:26,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:26,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314727593] [2022-07-14 14:10:26,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:26,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:26,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:26,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314727593] [2022-07-14 14:10:26,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314727593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:26,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:10:26,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:10:26,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391303608] [2022-07-14 14:10:26,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:26,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 14:10:26,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:26,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 14:10:26,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 14:10:26,471 INFO L87 Difference]: Start difference. First operand 51695 states and 190114 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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) [2022-07-14 14:10:27,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:27,100 INFO L93 Difference]: Finished difference Result 48797 states and 179040 transitions. [2022-07-14 14:10:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 14:10:27,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 [2022-07-14 14:10:27,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:27,344 INFO L225 Difference]: With dead ends: 48797 [2022-07-14 14:10:27,344 INFO L226 Difference]: Without dead ends: 48797 [2022-07-14 14:10:27,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 14:10:27,346 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:27,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 25 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:10:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48797 states. [2022-07-14 14:10:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48797 to 48797. [2022-07-14 14:10:28,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48797 states, 48266 states have (on average 3.709443500600837) internal successors, (179040), 48796 states have internal predecessors, (179040), 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) [2022-07-14 14:10:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48797 states to 48797 states and 179040 transitions. [2022-07-14 14:10:29,151 INFO L78 Accepts]: Start accepts. Automaton has 48797 states and 179040 transitions. Word has length 7 [2022-07-14 14:10:29,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:29,151 INFO L495 AbstractCegarLoop]: Abstraction has 48797 states and 179040 transitions. [2022-07-14 14:10:29,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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) [2022-07-14 14:10:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 48797 states and 179040 transitions. [2022-07-14 14:10:29,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:10:29,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:29,152 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:10:29,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-14 14:10:29,153 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-07-14 14:10:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:29,153 INFO L85 PathProgramCache]: Analyzing trace with hash 866806864, now seen corresponding path program 1 times [2022-07-14 14:10:29,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:29,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776370662] [2022-07-14 14:10:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:10:29,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:29,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776370662] [2022-07-14 14:10:29,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776370662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:29,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:10:29,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:10:29,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535139629] [2022-07-14 14:10:29,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:29,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:10:29,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:29,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:10:29,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:10:29,193 INFO L87 Difference]: Start difference. First operand 48797 states and 179040 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) [2022-07-14 14:10:30,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:30,021 INFO L93 Difference]: Finished difference Result 44687 states and 163632 transitions. [2022-07-14 14:10:30,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:10:30,021 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 [2022-07-14 14:10:30,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:30,266 INFO L225 Difference]: With dead ends: 44687 [2022-07-14 14:10:30,266 INFO L226 Difference]: Without dead ends: 44687 [2022-07-14 14:10:30,267 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 [2022-07-14 14:10:30,267 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 49 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:30,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 14 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 14:10:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44687 states. [2022-07-14 14:10:31,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44687 to 44687. [2022-07-14 14:10:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44687 states, 44294 states have (on average 3.6942249514606944) internal successors, (163632), 44686 states have internal predecessors, (163632), 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) [2022-07-14 14:10:32,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44687 states to 44687 states and 163632 transitions. [2022-07-14 14:10:32,243 INFO L78 Accepts]: Start accepts. Automaton has 44687 states and 163632 transitions. Word has length 9 [2022-07-14 14:10:32,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:32,244 INFO L495 AbstractCegarLoop]: Abstraction has 44687 states and 163632 transitions. [2022-07-14 14:10:32,244 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) [2022-07-14 14:10:32,244 INFO L276 IsEmpty]: Start isEmpty. Operand 44687 states and 163632 transitions. [2022-07-14 14:10:32,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:10:32,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:32,245 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:10:32,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-14 14:10:32,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-07-14 14:10:32,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:32,246 INFO L85 PathProgramCache]: Analyzing trace with hash 866806887, now seen corresponding path program 1 times [2022-07-14 14:10:32,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:32,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514843969] [2022-07-14 14:10:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:32,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:32,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:32,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:32,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514843969] [2022-07-14 14:10:32,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514843969] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:10:32,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912731333] [2022-07-14 14:10:32,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:32,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:10:32,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:10:32,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:10:32,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 14:10:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:32,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:10:32,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:10:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:32,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:10:32,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912731333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:32,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 14:10:32,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-07-14 14:10:32,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122101692] [2022-07-14 14:10:32,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:32,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 14:10:32,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:32,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 14:10:32,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:10:32,439 INFO L87 Difference]: Start difference. First operand 44687 states and 163632 transitions. Second operand has 4 states, 3 states have (on average 3.0) 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) [2022-07-14 14:10:32,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:32,832 INFO L93 Difference]: Finished difference Result 40577 states and 148224 transitions. [2022-07-14 14:10:32,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 14:10:32,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) 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 [2022-07-14 14:10:32,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:33,008 INFO L225 Difference]: With dead ends: 40577 [2022-07-14 14:10:33,008 INFO L226 Difference]: Without dead ends: 40577 [2022-07-14 14:10:33,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:10:33,009 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 105 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:33,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 12 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:10:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40577 states. [2022-07-14 14:10:34,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40577 to 40577. [2022-07-14 14:10:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40577 states, 40322 states have (on average 3.676008134517137) internal successors, (148224), 40576 states have internal predecessors, (148224), 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) [2022-07-14 14:10:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40577 states to 40577 states and 148224 transitions. [2022-07-14 14:10:34,671 INFO L78 Accepts]: Start accepts. Automaton has 40577 states and 148224 transitions. Word has length 9 [2022-07-14 14:10:34,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:34,671 INFO L495 AbstractCegarLoop]: Abstraction has 40577 states and 148224 transitions. [2022-07-14 14:10:34,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) 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) [2022-07-14 14:10:34,672 INFO L276 IsEmpty]: Start isEmpty. Operand 40577 states and 148224 transitions. [2022-07-14 14:10:34,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:10:34,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:34,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:10:34,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-14 14:10:34,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-14 14:10:34,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-07-14 14:10:34,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:34,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1891171328, now seen corresponding path program 1 times [2022-07-14 14:10:34,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:34,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814817095] [2022-07-14 14:10:34,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:34,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:34,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:34,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814817095] [2022-07-14 14:10:34,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814817095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:34,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:10:34,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:10:34,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94120642] [2022-07-14 14:10:34,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:34,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 14:10:34,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:34,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 14:10:34,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 14:10:34,927 INFO L87 Difference]: Start difference. First operand 40577 states and 148224 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) 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) [2022-07-14 14:10:36,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:36,135 INFO L93 Difference]: Finished difference Result 64833 states and 232178 transitions. [2022-07-14 14:10:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 14:10:36,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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 [2022-07-14 14:10:36,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:36,514 INFO L225 Difference]: With dead ends: 64833 [2022-07-14 14:10:36,514 INFO L226 Difference]: Without dead ends: 64833 [2022-07-14 14:10:36,514 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 [2022-07-14 14:10:36,515 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 121 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:36,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 43 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:10:36,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64833 states. [2022-07-14 14:10:38,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64833 to 55165. [2022-07-14 14:10:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55165 states, 54915 states have (on average 3.719275243558226) internal successors, (204244), 55164 states have internal predecessors, (204244), 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) [2022-07-14 14:10:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55165 states to 55165 states and 204244 transitions. [2022-07-14 14:10:38,693 INFO L78 Accepts]: Start accepts. Automaton has 55165 states and 204244 transitions. Word has length 11 [2022-07-14 14:10:38,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:38,693 INFO L495 AbstractCegarLoop]: Abstraction has 55165 states and 204244 transitions. [2022-07-14 14:10:38,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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) [2022-07-14 14:10:38,693 INFO L276 IsEmpty]: Start isEmpty. Operand 55165 states and 204244 transitions. [2022-07-14 14:10:38,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:10:38,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:38,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:10:38,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-14 14:10:38,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-07-14 14:10:38,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:38,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1891171329, now seen corresponding path program 1 times [2022-07-14 14:10:38,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:38,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674574014] [2022-07-14 14:10:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:38,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:38,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:38,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:38,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674574014] [2022-07-14 14:10:38,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674574014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:38,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:10:38,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 14:10:38,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561768923] [2022-07-14 14:10:38,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:38,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 14:10:38,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:38,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 14:10:38,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:10:38,794 INFO L87 Difference]: Start difference. First operand 55165 states and 204244 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-07-14 14:10:40,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:40,152 INFO L93 Difference]: Finished difference Result 75856 states and 265170 transitions. [2022-07-14 14:10:40,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 14:10:40,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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 [2022-07-14 14:10:40,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:40,534 INFO L225 Difference]: With dead ends: 75856 [2022-07-14 14:10:40,535 INFO L226 Difference]: Without dead ends: 75576 [2022-07-14 14:10:40,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-14 14:10:40,535 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 146 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:40,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 87 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-14 14:10:40,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75576 states. [2022-07-14 14:10:43,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75576 to 71788. [2022-07-14 14:10:43,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71788 states, 71546 states have (on average 3.5847566600508762) internal successors, (256475), 71787 states have internal predecessors, (256475), 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) [2022-07-14 14:10:43,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71788 states to 71788 states and 256475 transitions. [2022-07-14 14:10:43,593 INFO L78 Accepts]: Start accepts. Automaton has 71788 states and 256475 transitions. Word has length 11 [2022-07-14 14:10:43,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:43,593 INFO L495 AbstractCegarLoop]: Abstraction has 71788 states and 256475 transitions. [2022-07-14 14:10:43,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-07-14 14:10:43,593 INFO L276 IsEmpty]: Start isEmpty. Operand 71788 states and 256475 transitions. [2022-07-14 14:10:43,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-14 14:10:43,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:43,594 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:10:43,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-14 14:10:43,595 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-07-14 14:10:43,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:43,595 INFO L85 PathProgramCache]: Analyzing trace with hash -313066826, now seen corresponding path program 1 times [2022-07-14 14:10:43,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:43,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104889722] [2022-07-14 14:10:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:43,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:43,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:43,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104889722] [2022-07-14 14:10:43,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104889722] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:10:43,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195978377] [2022-07-14 14:10:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:43,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:10:43,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:10:43,656 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:10:43,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 14:10:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:43,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-14 14:10:43,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:10:43,760 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 14:10:43,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-14 14:10:43,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-14 14:10:43,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-14 14:10:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:43,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:10:43,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195978377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:43,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 14:10:43,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-07-14 14:10:43,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167649317] [2022-07-14 14:10:43,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:43,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 14:10:43,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:43,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 14:10:43,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-14 14:10:43,855 INFO L87 Difference]: Start difference. First operand 71788 states and 256475 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:10:44,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:44,654 INFO L93 Difference]: Finished difference Result 79807 states and 278249 transitions. [2022-07-14 14:10:44,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:10:44,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-14 14:10:44,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:45,667 INFO L225 Difference]: With dead ends: 79807 [2022-07-14 14:10:45,667 INFO L226 Difference]: Without dead ends: 79807 [2022-07-14 14:10:45,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-14 14:10:45,668 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 227 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:45,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 51 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 14:10:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79807 states. [2022-07-14 14:10:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79807 to 64139. [2022-07-14 14:10:47,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64139 states, 63929 states have (on average 3.5858217710272333) internal successors, (229238), 64138 states have internal predecessors, (229238), 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) [2022-07-14 14:10:47,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64139 states to 64139 states and 229238 transitions. [2022-07-14 14:10:47,731 INFO L78 Accepts]: Start accepts. Automaton has 64139 states and 229238 transitions. Word has length 14 [2022-07-14 14:10:47,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:47,731 INFO L495 AbstractCegarLoop]: Abstraction has 64139 states and 229238 transitions. [2022-07-14 14:10:47,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:10:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 64139 states and 229238 transitions. [2022-07-14 14:10:47,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-14 14:10:47,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:47,732 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:10:47,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 14:10:47,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-14 14:10:47,933 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-07-14 14:10:47,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:47,934 INFO L85 PathProgramCache]: Analyzing trace with hash -313066825, now seen corresponding path program 1 times [2022-07-14 14:10:47,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:47,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40326096] [2022-07-14 14:10:47,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:47,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:48,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:48,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40326096] [2022-07-14 14:10:48,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40326096] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:10:48,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906159838] [2022-07-14 14:10:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:48,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:10:48,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:10:48,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:10:48,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 14:10:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:48,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-14 14:10:48,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:10:48,110 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 14:10:48,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-14 14:10:48,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-14 14:10:48,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-07-14 14:10:48,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-14 14:10:48,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:10:48,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:10:48,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906159838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:10:48,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 14:10:48,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-07-14 14:10:48,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593236564] [2022-07-14 14:10:48,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:10:48,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 14:10:48,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:48,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 14:10:48,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-14 14:10:48,240 INFO L87 Difference]: Start difference. First operand 64139 states and 229238 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:10:49,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:49,401 INFO L93 Difference]: Finished difference Result 62594 states and 223736 transitions. [2022-07-14 14:10:49,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:10:49,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-14 14:10:49,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:49,770 INFO L225 Difference]: With dead ends: 62594 [2022-07-14 14:10:49,770 INFO L226 Difference]: Without dead ends: 62594 [2022-07-14 14:10:49,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-14 14:10:49,771 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 68 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:49,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 67 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:10:49,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62594 states. [2022-07-14 14:10:51,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62594 to 61022. [2022-07-14 14:10:51,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61022 states, 60823 states have (on average 3.579632704733407) internal successors, (217724), 61021 states have internal predecessors, (217724), 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) [2022-07-14 14:10:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61022 states to 61022 states and 217724 transitions. [2022-07-14 14:10:51,976 INFO L78 Accepts]: Start accepts. Automaton has 61022 states and 217724 transitions. Word has length 14 [2022-07-14 14:10:51,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:51,976 INFO L495 AbstractCegarLoop]: Abstraction has 61022 states and 217724 transitions. [2022-07-14 14:10:51,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:10:51,976 INFO L276 IsEmpty]: Start isEmpty. Operand 61022 states and 217724 transitions. [2022-07-14 14:10:51,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-14 14:10:51,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:51,978 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:10:51,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-14 14:10:52,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:10:52,183 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-07-14 14:10:52,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:52,183 INFO L85 PathProgramCache]: Analyzing trace with hash -716524378, now seen corresponding path program 1 times [2022-07-14 14:10:52,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:52,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085541679] [2022-07-14 14:10:52,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:52,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:10:52,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:10:52,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085541679] [2022-07-14 14:10:52,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085541679] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:10:52,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206396425] [2022-07-14 14:10:52,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:52,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:10:52,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:10:52,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:10:52,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 14:10:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:10:52,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-14 14:10:52,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:10:52,359 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 14:10:52,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-14 14:10:52,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-14 14:10:52,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-14 14:10:52,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-07-14 14:10:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:10:52,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:10:52,541 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_233 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_233) c_~p~0.base) c_~p~0.offset) 2147483648))) is different from false [2022-07-14 14:10:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-07-14 14:10:52,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206396425] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:10:52,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:10:52,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2022-07-14 14:10:52,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415421835] [2022-07-14 14:10:52,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:10:52,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 14:10:52,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:10:52,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 14:10:52,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=112, Unknown=1, NotChecked=22, Total=182 [2022-07-14 14:10:52,566 INFO L87 Difference]: Start difference. First operand 61022 states and 217724 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:10:54,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:10:54,636 INFO L93 Difference]: Finished difference Result 102353 states and 355307 transitions. [2022-07-14 14:10:54,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-14 14:10:54,637 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-14 14:10:54,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:10:55,154 INFO L225 Difference]: With dead ends: 102353 [2022-07-14 14:10:55,154 INFO L226 Difference]: Without dead ends: 101783 [2022-07-14 14:10:55,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=471, Unknown=1, NotChecked=48, Total=702 [2022-07-14 14:10:55,155 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 742 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 265 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-14 14:10:55,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 159 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 930 Invalid, 0 Unknown, 265 Unchecked, 0.6s Time] [2022-07-14 14:10:55,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101783 states. [2022-07-14 14:10:57,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101783 to 68794. [2022-07-14 14:10:57,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68794 states, 68612 states have (on average 3.5901883052527253) internal successors, (246330), 68793 states have internal predecessors, (246330), 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) [2022-07-14 14:10:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68794 states to 68794 states and 246330 transitions. [2022-07-14 14:10:57,593 INFO L78 Accepts]: Start accepts. Automaton has 68794 states and 246330 transitions. Word has length 15 [2022-07-14 14:10:57,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:10:57,593 INFO L495 AbstractCegarLoop]: Abstraction has 68794 states and 246330 transitions. [2022-07-14 14:10:57,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:10:57,593 INFO L276 IsEmpty]: Start isEmpty. Operand 68794 states and 246330 transitions. [2022-07-14 14:10:57,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-14 14:10:57,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:10:57,595 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-07-14 14:10:57,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 14:10:57,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-14 14:10:57,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-07-14 14:10:57,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:10:57,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1337765829, now seen corresponding path program 1 times [2022-07-14 14:10:57,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:10:57,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820008001] [2022-07-14 14:10:57,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:10:57,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:10:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:10:57,809 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:10:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:10:57,822 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:10:57,822 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 14:10:57,822 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-07-14 14:10:57,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-07-14 14:10:57,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-07-14 14:10:57,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-07-14 14:10:57,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-07-14 14:10:57,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-07-14 14:10:57,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-07-14 14:10:57,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-07-14 14:10:57,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-07-14 14:10:57,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-07-14 14:10:57,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-07-14 14:10:57,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-07-14 14:10:57,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-07-14 14:10:57,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-07-14 14:10:57,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-07-14 14:10:57,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-07-14 14:10:57,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-07-14 14:10:57,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-07-14 14:10:57,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-07-14 14:10:57,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-14 14:10:57,826 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:10:57,826 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-14 14:10:57,826 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-14 14:10:58,407 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-14 14:10:58,410 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:10:58,411 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 240 transitions, 512 flow [2022-07-14 14:10:58,411 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 240 transitions, 512 flow [2022-07-14 14:10:58,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 221 places, 240 transitions, 512 flow [2022-07-14 14:10:58,537 INFO L129 PetriNetUnfolder]: 44/399 cut-off events. [2022-07-14 14:10:58,538 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-14 14:10:58,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 399 events. 44/399 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1368 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 324. Up to 10 conditions per place. [2022-07-14 14:10:58,572 INFO L116 LiptonReduction]: Number of co-enabled transitions 33440 [2022-07-14 14:11:02,808 INFO L131 LiptonReduction]: Checked pairs total: 80775 [2022-07-14 14:11:02,809 INFO L133 LiptonReduction]: Total number of compositions: 221 [2022-07-14 14:11:02,810 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 102 transitions, 236 flow