./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6c24879c 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_11-ptr_racing.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 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 02:28:21,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:28:21,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:28:21,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:28:21,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:28:21,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:28:21,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:28:21,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:28:21,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:28:21,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:28:21,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:28:21,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:28:21,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:28:21,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:28:21,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:28:21,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:28:21,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:28:21,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:28:21,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:28:21,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:28:21,079 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:28:21,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:28:21,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:28:21,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:28:21,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:28:21,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:28:21,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:28:21,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:28:21,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:28:21,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:28:21,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:28:21,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:28:21,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:28:21,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:28:21,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:28:21,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:28:21,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:28:21,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:28:21,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:28:21,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:28:21,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:28:21,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:28:21,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-13 02:28:21,118 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:28:21,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:28:21,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:28:21,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:28:21,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:28:21,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:28:21,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:28:21,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:28:21,121 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:28:21,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:28:21,122 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 02:28:21,122 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:28:21,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:28:21,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 02:28:21,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:28:21,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:28:21,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:28:21,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:28:21,123 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:28:21,123 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 02:28:21,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:28:21,124 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:28:21,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:28:21,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:28:21,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:28:21,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:28:21,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:28:21,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:28:21,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:28:21,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:28:21,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:28:21,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:28:21,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:28:21,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df [2022-07-13 02:28:21,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:28:21,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:28:21,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:28:21,307 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:28:21,308 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:28:21,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2022-07-13 02:28:21,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d0f42cc/63d42a16e9fe42268633b0b0f0f6af0d/FLAG3ad286b9e [2022-07-13 02:28:21,730 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:28:21,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2022-07-13 02:28:21,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d0f42cc/63d42a16e9fe42268633b0b0f0f6af0d/FLAG3ad286b9e [2022-07-13 02:28:21,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d0f42cc/63d42a16e9fe42268633b0b0f0f6af0d [2022-07-13 02:28:21,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:28:21,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:28:21,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:28:21,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:28:21,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:28:21,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:28:21" (1/1) ... [2022-07-13 02:28:21,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9c2b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:21, skipping insertion in model container [2022-07-13 02:28:21,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:28:21" (1/1) ... [2022-07-13 02:28:21,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:28:21,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:28:22,035 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_11-ptr_racing.i[30176,30189] [2022-07-13 02:28:22,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:28:22,062 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:28:22,088 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_11-ptr_racing.i[30176,30189] [2022-07-13 02:28:22,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:28:22,119 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:28:22,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:22 WrapperNode [2022-07-13 02:28:22,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:28:22,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:28:22,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:28:22,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:28:22,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:22" (1/1) ... [2022-07-13 02:28:22,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:22" (1/1) ... [2022-07-13 02:28:22,169 INFO L137 Inliner]: procedures = 170, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2022-07-13 02:28:22,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:28:22,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:28:22,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:28:22,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:28:22,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:22" (1/1) ... [2022-07-13 02:28:22,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:22" (1/1) ... [2022-07-13 02:28:22,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:22" (1/1) ... [2022-07-13 02:28:22,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:22" (1/1) ... [2022-07-13 02:28:22,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:22" (1/1) ... [2022-07-13 02:28:22,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:22" (1/1) ... [2022-07-13 02:28:22,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:22" (1/1) ... [2022-07-13 02:28:22,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:28:22,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:28:22,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:28:22,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:28:22,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:22" (1/1) ... [2022-07-13 02:28:22,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:28:22,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:28:22,245 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) [2022-07-13 02:28:22,250 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 [2022-07-13 02:28:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 02:28:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 02:28:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-13 02:28:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 02:28:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 02:28:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-13 02:28:22,287 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-13 02:28:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 02:28:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 02:28:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:28:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:28:22,289 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 02:28:22,377 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:28:22,378 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:28:22,545 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:28:22,563 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:28:22,563 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-13 02:28:22,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:28:22 BoogieIcfgContainer [2022-07-13 02:28:22,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:28:22,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:28:22,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:28:22,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:28:22,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:28:21" (1/3) ... [2022-07-13 02:28:22,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5879fea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:28:22, skipping insertion in model container [2022-07-13 02:28:22,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:22" (2/3) ... [2022-07-13 02:28:22,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5879fea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:28:22, skipping insertion in model container [2022-07-13 02:28:22,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:28:22" (3/3) ... [2022-07-13 02:28:22,571 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2022-07-13 02:28:22,576 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 02:28:22,590 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:28:22,591 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-07-13 02:28:22,591 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 02:28:22,629 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-13 02:28:22,651 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-13 02:28:22,659 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 136 transitions, 280 flow [2022-07-13 02:28:22,661 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 136 transitions, 280 flow [2022-07-13 02:28:22,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 136 transitions, 280 flow [2022-07-13 02:28:22,716 INFO L129 PetriNetUnfolder]: 17/173 cut-off events. [2022-07-13 02:28:22,717 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-13 02:28:22,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 173 events. 17/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 421 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2022-07-13 02:28:22,725 INFO L116 LiptonReduction]: Number of co-enabled transitions 3854 [2022-07-13 02:28:25,741 INFO L131 LiptonReduction]: Checked pairs total: 6768 [2022-07-13 02:28:25,742 INFO L133 LiptonReduction]: Total number of compositions: 131 [2022-07-13 02:28:25,747 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 42 transitions, 92 flow [2022-07-13 02:28:25,770 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 220 states, 193 states have (on average 2.7409326424870466) internal successors, (529), 219 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:25,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:28:25,785 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@595e4aa9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e72d1ee [2022-07-13 02:28:25,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-07-13 02:28:25,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 220 states, 193 states have (on average 2.7409326424870466) internal successors, (529), 219 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:25,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-13 02:28:25,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:25,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-13 02:28:25,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-07-13 02:28:25,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:25,794 INFO L85 PathProgramCache]: Analyzing trace with hash 16198901, now seen corresponding path program 1 times [2022-07-13 02:28:25,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:25,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437458435] [2022-07-13 02:28:25,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:25,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:25,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:25,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437458435] [2022-07-13 02:28:25,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437458435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:25,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:25,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-13 02:28:25,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151039733] [2022-07-13 02:28:25,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:25,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:28:25,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:25,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:28:25,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:28:25,938 INFO L87 Difference]: Start difference. First operand has 220 states, 193 states have (on average 2.7409326424870466) internal successors, (529), 219 states have internal predecessors, (529), 0 states have call successors, (0), 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) [2022-07-13 02:28:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:25,988 INFO L93 Difference]: Finished difference Result 184 states and 333 transitions. [2022-07-13 02:28:25,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:28:25,990 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 [2022-07-13 02:28:25,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:25,997 INFO L225 Difference]: With dead ends: 184 [2022-07-13 02:28:25,997 INFO L226 Difference]: Without dead ends: 178 [2022-07-13 02:28:25,998 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 [2022-07-13 02:28:26,000 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:26,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 8 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:28:26,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-07-13 02:28:26,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-07-13 02:28:26,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 163 states have (on average 1.98159509202454) internal successors, (323), 177 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:26,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 323 transitions. [2022-07-13 02:28:26,047 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 323 transitions. Word has length 4 [2022-07-13 02:28:26,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:26,047 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 323 transitions. [2022-07-13 02:28:26,047 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) [2022-07-13 02:28:26,047 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 323 transitions. [2022-07-13 02:28:26,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-13 02:28:26,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:26,048 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-07-13 02:28:26,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:28:26,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-07-13 02:28:26,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:26,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1612693865, now seen corresponding path program 1 times [2022-07-13 02:28:26,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:26,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913886939] [2022-07-13 02:28:26,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:26,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:28:26,084 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 02:28:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:28:26,111 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 02:28:26,112 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 02:28:26,113 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-07-13 02:28:26,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-07-13 02:28:26,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-07-13 02:28:26,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-07-13 02:28:26,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-07-13 02:28:26,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-07-13 02:28:26,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-07-13 02:28:26,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-07-13 02:28:26,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-07-13 02:28:26,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-07-13 02:28:26,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-07-13 02:28:26,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-07-13 02:28:26,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-07-13 02:28:26,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 02:28:26,118 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 02:28:26,119 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 02:28:26,119 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-13 02:28:26,132 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 02:28:26,135 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-13 02:28:26,135 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 179 transitions, 376 flow [2022-07-13 02:28:26,135 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 179 transitions, 376 flow [2022-07-13 02:28:26,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 165 places, 179 transitions, 376 flow [2022-07-13 02:28:26,167 INFO L129 PetriNetUnfolder]: 31/290 cut-off events. [2022-07-13 02:28:26,168 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-13 02:28:26,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 31/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 913 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2022-07-13 02:28:26,190 INFO L116 LiptonReduction]: Number of co-enabled transitions 12628 [2022-07-13 02:28:29,413 INFO L131 LiptonReduction]: Checked pairs total: 25554 [2022-07-13 02:28:29,413 INFO L133 LiptonReduction]: Total number of compositions: 166 [2022-07-13 02:28:29,414 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 66 transitions, 150 flow [2022-07-13 02:28:29,520 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3981 states, 3814 states have (on average 3.7233875196643944) internal successors, (14201), 3980 states have internal predecessors, (14201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:29,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:28:29,527 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@595e4aa9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e72d1ee [2022-07-13 02:28:29,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-07-13 02:28:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 3981 states, 3814 states have (on average 3.7233875196643944) internal successors, (14201), 3980 states have internal predecessors, (14201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:29,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-13 02:28:29,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:29,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-13 02:28:29,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-13 02:28:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash 872362364, now seen corresponding path program 1 times [2022-07-13 02:28:29,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:29,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146643708] [2022-07-13 02:28:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:29,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:29,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:29,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146643708] [2022-07-13 02:28:29,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146643708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:29,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:29,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-13 02:28:29,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613541148] [2022-07-13 02:28:29,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:29,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:28:29,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:29,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:28:29,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:28:29,606 INFO L87 Difference]: Start difference. First operand has 3981 states, 3814 states have (on average 3.7233875196643944) internal successors, (14201), 3980 states have internal predecessors, (14201), 0 states have call successors, (0), 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) [2022-07-13 02:28:29,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:29,787 INFO L93 Difference]: Finished difference Result 3945 states and 10756 transitions. [2022-07-13 02:28:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:28:29,800 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 [2022-07-13 02:28:29,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:29,842 INFO L225 Difference]: With dead ends: 3945 [2022-07-13 02:28:29,843 INFO L226 Difference]: Without dead ends: 3919 [2022-07-13 02:28:29,843 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 [2022-07-13 02:28:29,848 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:29,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 12 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:28:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2022-07-13 02:28:29,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3919. [2022-07-13 02:28:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3919 states, 3766 states have (on average 2.8385554965480617) internal successors, (10690), 3918 states have internal predecessors, (10690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:29,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 10690 transitions. [2022-07-13 02:28:29,950 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 10690 transitions. Word has length 5 [2022-07-13 02:28:29,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:29,951 INFO L495 AbstractCegarLoop]: Abstraction has 3919 states and 10690 transitions. [2022-07-13 02:28:29,951 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) [2022-07-13 02:28:29,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 10690 transitions. [2022-07-13 02:28:29,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 02:28:29,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:29,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:28:29,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 02:28:29,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-13 02:28:29,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:29,953 INFO L85 PathProgramCache]: Analyzing trace with hash 830277376, now seen corresponding path program 1 times [2022-07-13 02:28:29,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:29,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753538570] [2022-07-13 02:28:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:29,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:29,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:29,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753538570] [2022-07-13 02:28:29,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753538570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:29,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:29,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:28:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835457243] [2022-07-13 02:28:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:29,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:28:29,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:29,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:28:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:28:29,998 INFO L87 Difference]: Start difference. First operand 3919 states and 10690 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-07-13 02:28:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:30,251 INFO L93 Difference]: Finished difference Result 5776 states and 15523 transitions. [2022-07-13 02:28:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:28:30,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 [2022-07-13 02:28:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:30,276 INFO L225 Difference]: With dead ends: 5776 [2022-07-13 02:28:30,276 INFO L226 Difference]: Without dead ends: 5776 [2022-07-13 02:28:30,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:28:30,277 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 109 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:30,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 39 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:28:30,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5776 states. [2022-07-13 02:28:30,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5776 to 4410. [2022-07-13 02:28:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4410 states, 4257 states have (on average 2.834625322997416) internal successors, (12067), 4409 states have internal predecessors, (12067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:30,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 12067 transitions. [2022-07-13 02:28:30,419 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 12067 transitions. Word has length 7 [2022-07-13 02:28:30,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:30,419 INFO L495 AbstractCegarLoop]: Abstraction has 4410 states and 12067 transitions. [2022-07-13 02:28:30,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-07-13 02:28:30,420 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 12067 transitions. [2022-07-13 02:28:30,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:28:30,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:30,421 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-13 02:28:30,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 02:28:30,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-13 02:28:30,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:30,422 INFO L85 PathProgramCache]: Analyzing trace with hash -657223105, now seen corresponding path program 1 times [2022-07-13 02:28:30,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:30,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502575530] [2022-07-13 02:28:30,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:30,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:30,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:28:30,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:30,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502575530] [2022-07-13 02:28:30,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502575530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:30,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:30,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:28:30,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115779718] [2022-07-13 02:28:30,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:30,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:28:30,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:30,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:28:30,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:28:30,462 INFO L87 Difference]: Start difference. First operand 4410 states and 12067 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) [2022-07-13 02:28:30,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:30,534 INFO L93 Difference]: Finished difference Result 4133 states and 11268 transitions. [2022-07-13 02:28:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:28:30,535 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 [2022-07-13 02:28:30,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:30,550 INFO L225 Difference]: With dead ends: 4133 [2022-07-13 02:28:30,550 INFO L226 Difference]: Without dead ends: 4133 [2022-07-13 02:28:30,550 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 [2022-07-13 02:28:30,551 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 33 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:30,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 10 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:28:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2022-07-13 02:28:30,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 4133. [2022-07-13 02:28:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4133 states, 4005 states have (on average 2.8134831460674157) internal successors, (11268), 4132 states have internal predecessors, (11268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4133 states to 4133 states and 11268 transitions. [2022-07-13 02:28:30,631 INFO L78 Accepts]: Start accepts. Automaton has 4133 states and 11268 transitions. Word has length 9 [2022-07-13 02:28:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:30,632 INFO L495 AbstractCegarLoop]: Abstraction has 4133 states and 11268 transitions. [2022-07-13 02:28:30,632 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) [2022-07-13 02:28:30,632 INFO L276 IsEmpty]: Start isEmpty. Operand 4133 states and 11268 transitions. [2022-07-13 02:28:30,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:28:30,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:30,633 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-13 02:28:30,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 02:28:30,633 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-13 02:28:30,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:30,634 INFO L85 PathProgramCache]: Analyzing trace with hash -657223104, now seen corresponding path program 1 times [2022-07-13 02:28:30,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:30,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725255483] [2022-07-13 02:28:30,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:30,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:30,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:30,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:30,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725255483] [2022-07-13 02:28:30,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725255483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:30,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:30,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:28:30,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605463612] [2022-07-13 02:28:30,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:30,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:28:30,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:30,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:28:30,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:28:30,654 INFO L87 Difference]: Start difference. First operand 4133 states and 11268 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) [2022-07-13 02:28:30,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:30,731 INFO L93 Difference]: Finished difference Result 3856 states and 10469 transitions. [2022-07-13 02:28:30,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:28:30,731 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 [2022-07-13 02:28:30,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:30,744 INFO L225 Difference]: With dead ends: 3856 [2022-07-13 02:28:30,745 INFO L226 Difference]: Without dead ends: 3856 [2022-07-13 02:28:30,745 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 [2022-07-13 02:28:30,745 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6 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 [2022-07-13 02:28:30,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:28:30,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3856 states. [2022-07-13 02:28:30,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3856 to 3856. [2022-07-13 02:28:30,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3753 states have (on average 2.7895017319477753) internal successors, (10469), 3855 states have internal predecessors, (10469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:30,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 10469 transitions. [2022-07-13 02:28:30,810 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 10469 transitions. Word has length 9 [2022-07-13 02:28:30,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:30,810 INFO L495 AbstractCegarLoop]: Abstraction has 3856 states and 10469 transitions. [2022-07-13 02:28:30,810 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) [2022-07-13 02:28:30,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 10469 transitions. [2022-07-13 02:28:30,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 02:28:30,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:30,811 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:28:30,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 02:28:30,812 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-13 02:28:30,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:30,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1816399051, now seen corresponding path program 1 times [2022-07-13 02:28:30,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:30,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953818360] [2022-07-13 02:28:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:30,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:30,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:30,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953818360] [2022-07-13 02:28:30,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953818360] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:28:30,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474586258] [2022-07-13 02:28:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:30,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:28:30,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:28:30,854 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) [2022-07-13 02:28:30,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 02:28:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:30,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:28:30,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:28:30,952 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 02:28:30,953 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 [2022-07-13 02:28:31,012 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 [2022-07-13 02:28:31,104 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 [2022-07-13 02:28:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:31,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:28:31,163 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_56 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_56) c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset) 2147483646)) is different from false [2022-07-13 02:28:31,175 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_56 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_56) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483646)) is different from false [2022-07-13 02:28:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-07-13 02:28:31,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474586258] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:28:31,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:28:31,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-07-13 02:28:31,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553206226] [2022-07-13 02:28:31,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:28:31,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:28:31,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:31,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:28:31,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=53, Unknown=2, NotChecked=30, Total=110 [2022-07-13 02:28:31,200 INFO L87 Difference]: Start difference. First operand 3856 states and 10469 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:31,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:31,523 INFO L93 Difference]: Finished difference Result 4856 states and 12987 transitions. [2022-07-13 02:28:31,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:28:31,523 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-13 02:28:31,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:31,536 INFO L225 Difference]: With dead ends: 4856 [2022-07-13 02:28:31,536 INFO L226 Difference]: Without dead ends: 4856 [2022-07-13 02:28:31,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=104, Unknown=2, NotChecked=46, Total=210 [2022-07-13 02:28:31,537 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 136 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 251 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:31,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 67 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 395 Invalid, 0 Unknown, 251 Unchecked, 0.2s Time] [2022-07-13 02:28:31,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2022-07-13 02:28:31,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 3871. [2022-07-13 02:28:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3871 states, 3768 states have (on average 2.8012208067940554) internal successors, (10555), 3870 states have internal predecessors, (10555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3871 states to 3871 states and 10555 transitions. [2022-07-13 02:28:31,620 INFO L78 Accepts]: Start accepts. Automaton has 3871 states and 10555 transitions. Word has length 10 [2022-07-13 02:28:31,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:31,620 INFO L495 AbstractCegarLoop]: Abstraction has 3871 states and 10555 transitions. [2022-07-13 02:28:31,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:31,621 INFO L276 IsEmpty]: Start isEmpty. Operand 3871 states and 10555 transitions. [2022-07-13 02:28:31,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 02:28:31,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:31,621 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:28:31,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 02:28:31,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:28:31,838 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-13 02:28:31,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:31,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1816503211, now seen corresponding path program 2 times [2022-07-13 02:28:31,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:31,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327974741] [2022-07-13 02:28:31,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:31,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:31,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:31,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327974741] [2022-07-13 02:28:31,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327974741] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:28:31,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228906488] [2022-07-13 02:28:31,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:28:31,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:28:31,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:28:31,916 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) [2022-07-13 02:28:31,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 02:28:32,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:28:32,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:28:32,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:28:32,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:28:32,061 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 02:28:32,062 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 [2022-07-13 02:28:32,081 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 [2022-07-13 02:28:32,145 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 [2022-07-13 02:28:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:32,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:28:32,170 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_78 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_78) c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset) 2147483646)) is different from false [2022-07-13 02:28:32,189 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_78 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_78) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483646)) is different from false [2022-07-13 02:28:32,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-07-13 02:28:32,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228906488] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:28:32,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:28:32,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-07-13 02:28:32,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897908444] [2022-07-13 02:28:32,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:28:32,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:28:32,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:32,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:28:32,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=53, Unknown=2, NotChecked=30, Total=110 [2022-07-13 02:28:32,196 INFO L87 Difference]: Start difference. First operand 3871 states and 10555 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:32,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:32,493 INFO L93 Difference]: Finished difference Result 4113 states and 10904 transitions. [2022-07-13 02:28:32,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:28:32,494 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-13 02:28:32,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:32,504 INFO L225 Difference]: With dead ends: 4113 [2022-07-13 02:28:32,504 INFO L226 Difference]: Without dead ends: 4113 [2022-07-13 02:28:32,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=93, Unknown=2, NotChecked=42, Total=182 [2022-07-13 02:28:32,505 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 132 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:32,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 75 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 426 Invalid, 0 Unknown, 156 Unchecked, 0.2s Time] [2022-07-13 02:28:32,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2022-07-13 02:28:32,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 3431. [2022-07-13 02:28:32,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3340 states have (on average 2.764670658682635) internal successors, (9234), 3430 states have internal predecessors, (9234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:32,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 9234 transitions. [2022-07-13 02:28:32,573 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 9234 transitions. Word has length 10 [2022-07-13 02:28:32,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:32,573 INFO L495 AbstractCegarLoop]: Abstraction has 3431 states and 9234 transitions. [2022-07-13 02:28:32,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:32,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 9234 transitions. [2022-07-13 02:28:32,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 02:28:32,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:32,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:28:32,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 02:28:32,791 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,SelfDestructingSolverStorable7 [2022-07-13 02:28:32,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-13 02:28:32,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:32,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1853600732, now seen corresponding path program 1 times [2022-07-13 02:28:32,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:32,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943180267] [2022-07-13 02:28:32,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:32,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:32,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:32,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943180267] [2022-07-13 02:28:32,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943180267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:32,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:32,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:28:32,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125278219] [2022-07-13 02:28:32,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:32,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:28:32,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:28:32,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:28:32,820 INFO L87 Difference]: Start difference. First operand 3431 states and 9234 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) [2022-07-13 02:28:32,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:32,953 INFO L93 Difference]: Finished difference Result 4674 states and 12666 transitions. [2022-07-13 02:28:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:28:32,953 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 [2022-07-13 02:28:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:32,964 INFO L225 Difference]: With dead ends: 4674 [2022-07-13 02:28:32,964 INFO L226 Difference]: Without dead ends: 4674 [2022-07-13 02:28:32,964 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 [2022-07-13 02:28:32,965 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 121 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:32,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 33 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:28:32,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4674 states. [2022-07-13 02:28:33,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4674 to 4024. [2022-07-13 02:28:33,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4024 states, 3933 states have (on average 2.8237986270022883) internal successors, (11106), 4023 states have internal predecessors, (11106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 11106 transitions. [2022-07-13 02:28:33,069 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 11106 transitions. Word has length 11 [2022-07-13 02:28:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:33,069 INFO L495 AbstractCegarLoop]: Abstraction has 4024 states and 11106 transitions. [2022-07-13 02:28:33,069 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) [2022-07-13 02:28:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 11106 transitions. [2022-07-13 02:28:33,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 02:28:33,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:33,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:28:33,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 02:28:33,070 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-13 02:28:33,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:33,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1853600730, now seen corresponding path program 1 times [2022-07-13 02:28:33,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:33,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933438787] [2022-07-13 02:28:33,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:33,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:33,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:33,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933438787] [2022-07-13 02:28:33,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933438787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:33,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:33,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 02:28:33,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886103143] [2022-07-13 02:28:33,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:33,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 02:28:33,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:33,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 02:28:33,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:28:33,110 INFO L87 Difference]: Start difference. First operand 4024 states and 11106 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2022-07-13 02:28:33,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:33,560 INFO L93 Difference]: Finished difference Result 7389 states and 19858 transitions. [2022-07-13 02:28:33,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 02:28:33,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 [2022-07-13 02:28:33,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:33,578 INFO L225 Difference]: With dead ends: 7389 [2022-07-13 02:28:33,578 INFO L226 Difference]: Without dead ends: 7337 [2022-07-13 02:28:33,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-07-13 02:28:33,579 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 208 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:33,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 135 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 02:28:33,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7337 states. [2022-07-13 02:28:33,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7337 to 5040. [2022-07-13 02:28:33,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5040 states, 4949 states have (on average 2.8300666801374015) internal successors, (14006), 5039 states have internal predecessors, (14006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 14006 transitions. [2022-07-13 02:28:33,678 INFO L78 Accepts]: Start accepts. Automaton has 5040 states and 14006 transitions. Word has length 11 [2022-07-13 02:28:33,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:33,678 INFO L495 AbstractCegarLoop]: Abstraction has 5040 states and 14006 transitions. [2022-07-13 02:28:33,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2022-07-13 02:28:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5040 states and 14006 transitions. [2022-07-13 02:28:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 02:28:33,679 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:33,679 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-07-13 02:28:33,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 02:28:33,679 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-13 02:28:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash -231158938, now seen corresponding path program 1 times [2022-07-13 02:28:33,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:33,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301433097] [2022-07-13 02:28:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:33,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:28:33,722 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 02:28:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:28:33,732 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 02:28:33,732 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 02:28:33,733 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-07-13 02:28:33,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-07-13 02:28:33,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-07-13 02:28:33,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-07-13 02:28:33,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-07-13 02:28:33,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-07-13 02:28:33,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-07-13 02:28:33,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-07-13 02:28:33,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-07-13 02:28:33,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-07-13 02:28:33,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-07-13 02:28:33,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-07-13 02:28:33,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-07-13 02:28:33,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-07-13 02:28:33,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-07-13 02:28:33,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-07-13 02:28:33,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-07-13 02:28:33,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 02:28:33,735 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:28:33,736 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 02:28:33,736 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-13 02:28:33,750 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 02:28:33,752 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-13 02:28:33,752 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 222 transitions, 474 flow [2022-07-13 02:28:33,752 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 222 transitions, 474 flow [2022-07-13 02:28:33,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 203 places, 222 transitions, 474 flow [2022-07-13 02:28:33,787 INFO L129 PetriNetUnfolder]: 50/448 cut-off events. [2022-07-13 02:28:33,788 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-07-13 02:28:33,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 448 events. 50/448 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1600 event pairs, 1 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2022-07-13 02:28:33,806 INFO L116 LiptonReduction]: Number of co-enabled transitions 24354 [2022-07-13 02:28:37,394 INFO L131 LiptonReduction]: Checked pairs total: 52666 [2022-07-13 02:28:37,394 INFO L133 LiptonReduction]: Total number of compositions: 201 [2022-07-13 02:28:37,395 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 90 transitions, 210 flow [2022-07-13 02:28:39,130 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:39,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:28:39,132 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@595e4aa9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e72d1ee [2022-07-13 02:28:39,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-07-13 02:28:39,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-13 02:28:39,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:39,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-13 02:28:39,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:28:39,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:39,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1316017594, now seen corresponding path program 1 times [2022-07-13 02:28:39,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:39,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091642052] [2022-07-13 02:28:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:39,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:39,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:39,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091642052] [2022-07-13 02:28:39,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091642052] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:39,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:39,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-13 02:28:39,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915282780] [2022-07-13 02:28:39,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:39,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:28:39,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:28:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:28:39,665 INFO L87 Difference]: Start difference. First operand has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 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) [2022-07-13 02:28:40,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:40,707 INFO L93 Difference]: Finished difference Result 65753 states and 238574 transitions. [2022-07-13 02:28:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:28:40,708 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 [2022-07-13 02:28:40,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:41,332 INFO L225 Difference]: With dead ends: 65753 [2022-07-13 02:28:41,333 INFO L226 Difference]: Without dead ends: 65627 [2022-07-13 02:28:41,333 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 [2022-07-13 02:28:41,334 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:41,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:28:41,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65627 states. [2022-07-13 02:28:43,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65627 to 65627. [2022-07-13 02:28:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65627 states, 64688 states have (on average 3.681486519910957) internal successors, (238148), 65626 states have internal predecessors, (238148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65627 states to 65627 states and 238148 transitions. [2022-07-13 02:28:43,768 INFO L78 Accepts]: Start accepts. Automaton has 65627 states and 238148 transitions. Word has length 5 [2022-07-13 02:28:43,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:43,769 INFO L495 AbstractCegarLoop]: Abstraction has 65627 states and 238148 transitions. [2022-07-13 02:28:43,769 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) [2022-07-13 02:28:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 65627 states and 238148 transitions. [2022-07-13 02:28:43,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 02:28:43,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:43,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:28:43,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 02:28:43,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:28:43,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1983355106, now seen corresponding path program 1 times [2022-07-13 02:28:43,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:43,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163897438] [2022-07-13 02:28:43,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:43,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:43,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:43,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:43,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163897438] [2022-07-13 02:28:43,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163897438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:43,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:43,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:28:43,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417303755] [2022-07-13 02:28:43,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:43,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:28:43,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:43,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:28:43,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:28:43,841 INFO L87 Difference]: Start difference. First operand 65627 states and 238148 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-07-13 02:28:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:45,121 INFO L93 Difference]: Finished difference Result 98730 states and 352664 transitions. [2022-07-13 02:28:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:28:45,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 [2022-07-13 02:28:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:45,804 INFO L225 Difference]: With dead ends: 98730 [2022-07-13 02:28:45,805 INFO L226 Difference]: Without dead ends: 98730 [2022-07-13 02:28:45,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:28:45,805 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 185 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:45,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 38 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 02:28:46,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98730 states. [2022-07-13 02:28:48,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98730 to 73020. [2022-07-13 02:28:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73020 states, 72081 states have (on average 3.6743663378698965) internal successors, (264852), 73019 states have internal predecessors, (264852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73020 states to 73020 states and 264852 transitions. [2022-07-13 02:28:48,885 INFO L78 Accepts]: Start accepts. Automaton has 73020 states and 264852 transitions. Word has length 7 [2022-07-13 02:28:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:48,885 INFO L495 AbstractCegarLoop]: Abstraction has 73020 states and 264852 transitions. [2022-07-13 02:28:48,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-07-13 02:28:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 73020 states and 264852 transitions. [2022-07-13 02:28:48,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:28:48,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:48,886 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-13 02:28:48,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 02:28:48,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:28:48,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:48,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1615431314, now seen corresponding path program 1 times [2022-07-13 02:28:48,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:48,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208927195] [2022-07-13 02:28:48,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:48,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:28:48,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:48,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208927195] [2022-07-13 02:28:48,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208927195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:48,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:48,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:28:48,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163140169] [2022-07-13 02:28:48,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:48,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:28:48,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:48,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:28:48,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:28:48,903 INFO L87 Difference]: Start difference. First operand 73020 states and 264852 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) [2022-07-13 02:28:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:49,405 INFO L93 Difference]: Finished difference Result 68500 states and 247849 transitions. [2022-07-13 02:28:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:28:49,406 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 [2022-07-13 02:28:49,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:50,332 INFO L225 Difference]: With dead ends: 68500 [2022-07-13 02:28:50,343 INFO L226 Difference]: Without dead ends: 68500 [2022-07-13 02:28:50,343 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 [2022-07-13 02:28:50,344 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 49 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:50,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 14 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:28:50,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68500 states. [2022-07-13 02:28:52,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68500 to 68500. [2022-07-13 02:28:52,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68500 states, 67711 states have (on average 3.660394913677246) internal successors, (247849), 68499 states have internal predecessors, (247849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68500 states to 68500 states and 247849 transitions. [2022-07-13 02:28:53,095 INFO L78 Accepts]: Start accepts. Automaton has 68500 states and 247849 transitions. Word has length 9 [2022-07-13 02:28:53,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:53,095 INFO L495 AbstractCegarLoop]: Abstraction has 68500 states and 247849 transitions. [2022-07-13 02:28:53,096 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) [2022-07-13 02:28:53,096 INFO L276 IsEmpty]: Start isEmpty. Operand 68500 states and 247849 transitions. [2022-07-13 02:28:53,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:28:53,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:53,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-13 02:28:53,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 02:28:53,097 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:28:53,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:53,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1615431381, now seen corresponding path program 1 times [2022-07-13 02:28:53,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:53,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736100871] [2022-07-13 02:28:53,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:53,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:53,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:53,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736100871] [2022-07-13 02:28:53,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736100871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:53,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:53,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:28:53,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804710104] [2022-07-13 02:28:53,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:53,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:28:53,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:53,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:28:53,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:28:53,124 INFO L87 Difference]: Start difference. First operand 68500 states and 247849 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) [2022-07-13 02:28:53,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:53,598 INFO L93 Difference]: Finished difference Result 63980 states and 230846 transitions. [2022-07-13 02:28:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:28:53,599 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 [2022-07-13 02:28:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:53,866 INFO L225 Difference]: With dead ends: 63980 [2022-07-13 02:28:53,866 INFO L226 Difference]: Without dead ends: 63980 [2022-07-13 02:28:53,867 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 [2022-07-13 02:28:53,867 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 62 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:53,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 8 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:28:53,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63980 states. [2022-07-13 02:28:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63980 to 63980. [2022-07-13 02:28:56,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63980 states, 63341 states have (on average 3.6444956663140777) internal successors, (230846), 63979 states have internal predecessors, (230846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63980 states to 63980 states and 230846 transitions. [2022-07-13 02:28:56,354 INFO L78 Accepts]: Start accepts. Automaton has 63980 states and 230846 transitions. Word has length 9 [2022-07-13 02:28:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:56,355 INFO L495 AbstractCegarLoop]: Abstraction has 63980 states and 230846 transitions. [2022-07-13 02:28:56,355 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) [2022-07-13 02:28:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 63980 states and 230846 transitions. [2022-07-13 02:28:56,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 02:28:56,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:56,356 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:28:56,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 02:28:56,356 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:28:56,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:56,356 INFO L85 PathProgramCache]: Analyzing trace with hash 257070687, now seen corresponding path program 1 times [2022-07-13 02:28:56,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:56,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379663023] [2022-07-13 02:28:56,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:56,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:56,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:56,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379663023] [2022-07-13 02:28:56,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379663023] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:28:56,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76849135] [2022-07-13 02:28:56,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:56,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:28:56,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:28:56,389 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) [2022-07-13 02:28:56,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 02:28:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:56,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:28:56,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:28:56,461 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 02:28:56,462 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 [2022-07-13 02:28:56,477 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 [2022-07-13 02:28:56,533 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 [2022-07-13 02:28:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:56,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:28:56,554 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_160 (Array Int Int))) (<= 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_160) c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset)))) is different from false [2022-07-13 02:28:56,565 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_160 (Array Int Int))) (<= 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_160) |c_~#global~0.base|) |c_~#global~0.offset|)))) is different from false [2022-07-13 02:28:56,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-07-13 02:28:56,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76849135] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:28:56,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:28:56,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-07-13 02:28:56,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057398835] [2022-07-13 02:28:56,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:28:56,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:28:56,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:56,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:28:56,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=53, Unknown=2, NotChecked=30, Total=110 [2022-07-13 02:28:56,570 INFO L87 Difference]: Start difference. First operand 63980 states and 230846 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:57,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:57,898 INFO L93 Difference]: Finished difference Result 85673 states and 308509 transitions. [2022-07-13 02:28:57,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:28:57,899 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-13 02:28:57,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:58,331 INFO L225 Difference]: With dead ends: 85673 [2022-07-13 02:28:58,331 INFO L226 Difference]: Without dead ends: 85673 [2022-07-13 02:28:58,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=93, Unknown=2, NotChecked=42, Total=182 [2022-07-13 02:28:58,333 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 229 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:58,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 81 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 605 Invalid, 0 Unknown, 169 Unchecked, 0.3s Time] [2022-07-13 02:28:58,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85673 states. [2022-07-13 02:29:00,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85673 to 60755. [2022-07-13 02:29:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60755 states, 60140 states have (on average 3.632291320252744) internal successors, (218446), 60754 states have internal predecessors, (218446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:00,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60755 states to 60755 states and 218446 transitions. [2022-07-13 02:29:00,418 INFO L78 Accepts]: Start accepts. Automaton has 60755 states and 218446 transitions. Word has length 10 [2022-07-13 02:29:00,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:00,418 INFO L495 AbstractCegarLoop]: Abstraction has 60755 states and 218446 transitions. [2022-07-13 02:29:00,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:00,421 INFO L276 IsEmpty]: Start isEmpty. Operand 60755 states and 218446 transitions. [2022-07-13 02:29:00,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 02:29:00,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:00,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:29:00,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 02:29:00,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:29:00,640 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:29:00,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:00,641 INFO L85 PathProgramCache]: Analyzing trace with hash -276978794, now seen corresponding path program 1 times [2022-07-13 02:29:00,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:00,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715926994] [2022-07-13 02:29:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:00,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:00,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:29:00,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:00,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715926994] [2022-07-13 02:29:00,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715926994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:29:00,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:29:00,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 02:29:00,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087848234] [2022-07-13 02:29:00,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:29:00,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 02:29:00,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:00,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 02:29:00,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:29:00,729 INFO L87 Difference]: Start difference. First operand 60755 states and 218446 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2022-07-13 02:29:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:02,994 INFO L93 Difference]: Finished difference Result 125461 states and 445769 transitions. [2022-07-13 02:29:02,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 02:29:02,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 [2022-07-13 02:29:02,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:03,665 INFO L225 Difference]: With dead ends: 125461 [2022-07-13 02:29:03,665 INFO L226 Difference]: Without dead ends: 125461 [2022-07-13 02:29:03,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:29:03,666 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 380 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:03,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 124 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 02:29:04,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125461 states. [2022-07-13 02:29:06,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125461 to 76474. [2022-07-13 02:29:06,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76474 states, 75859 states have (on average 3.6950922105485176) internal successors, (280306), 76473 states have internal predecessors, (280306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:06,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76474 states to 76474 states and 280306 transitions. [2022-07-13 02:29:06,918 INFO L78 Accepts]: Start accepts. Automaton has 76474 states and 280306 transitions. Word has length 11 [2022-07-13 02:29:06,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:06,918 INFO L495 AbstractCegarLoop]: Abstraction has 76474 states and 280306 transitions. [2022-07-13 02:29:06,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2022-07-13 02:29:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand 76474 states and 280306 transitions. [2022-07-13 02:29:06,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 02:29:06,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:06,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:29:06,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 02:29:06,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:29:06,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:06,925 INFO L85 PathProgramCache]: Analyzing trace with hash -276978841, now seen corresponding path program 1 times [2022-07-13 02:29:06,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:06,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752216092] [2022-07-13 02:29:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:06,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:29:06,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:06,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752216092] [2022-07-13 02:29:06,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752216092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:29:06,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:29:06,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:29:06,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146158099] [2022-07-13 02:29:06,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:29:06,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:29:06,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:06,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:29:06,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:29:06,963 INFO L87 Difference]: Start difference. First operand 76474 states and 280306 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) [2022-07-13 02:29:08,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:08,267 INFO L93 Difference]: Finished difference Result 95856 states and 346273 transitions. [2022-07-13 02:29:08,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:29:08,268 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 [2022-07-13 02:29:08,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:08,727 INFO L225 Difference]: With dead ends: 95856 [2022-07-13 02:29:08,728 INFO L226 Difference]: Without dead ends: 95728 [2022-07-13 02:29:08,728 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 [2022-07-13 02:29:08,728 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 45 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:08,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 20 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:29:08,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95728 states. [2022-07-13 02:29:11,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95728 to 86635. [2022-07-13 02:29:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86635 states, 86020 states have (on average 3.6972215763775864) internal successors, (318035), 86634 states have internal predecessors, (318035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:12,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86635 states to 86635 states and 318035 transitions. [2022-07-13 02:29:12,088 INFO L78 Accepts]: Start accepts. Automaton has 86635 states and 318035 transitions. Word has length 11 [2022-07-13 02:29:12,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:12,088 INFO L495 AbstractCegarLoop]: Abstraction has 86635 states and 318035 transitions. [2022-07-13 02:29:12,088 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) [2022-07-13 02:29:12,089 INFO L276 IsEmpty]: Start isEmpty. Operand 86635 states and 318035 transitions. [2022-07-13 02:29:12,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 02:29:12,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:12,089 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:29:12,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 02:29:12,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:29:12,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:12,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1957169895, now seen corresponding path program 1 times [2022-07-13 02:29:12,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:12,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841514365] [2022-07-13 02:29:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:12,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:29:12,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:12,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841514365] [2022-07-13 02:29:12,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841514365] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:29:12,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498359783] [2022-07-13 02:29:12,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:12,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:29:12,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:29:12,168 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) [2022-07-13 02:29:12,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 02:29:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:12,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:29:12,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:29:12,242 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 02:29:12,243 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 [2022-07-13 02:29:12,256 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 [2022-07-13 02:29:12,277 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 [2022-07-13 02:29:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:29:12,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:29:12,324 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_210 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_210) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483646)) is different from false [2022-07-13 02:29:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-07-13 02:29:12,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498359783] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:29:12,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:29:12,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-07-13 02:29:12,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216678601] [2022-07-13 02:29:12,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:29:12,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:29:12,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:12,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:29:12,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=66, Unknown=1, NotChecked=16, Total=110 [2022-07-13 02:29:12,333 INFO L87 Difference]: Start difference. First operand 86635 states and 318035 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:14,094 INFO L93 Difference]: Finished difference Result 143203 states and 507420 transitions. [2022-07-13 02:29:14,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 02:29:14,094 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-13 02:29:14,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:14,755 INFO L225 Difference]: With dead ends: 143203 [2022-07-13 02:29:14,755 INFO L226 Difference]: Without dead ends: 143203 [2022-07-13 02:29:14,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=165, Unknown=1, NotChecked=28, Total=272 [2022-07-13 02:29:14,756 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 354 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:14,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 113 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 872 Invalid, 0 Unknown, 216 Unchecked, 0.4s Time] [2022-07-13 02:29:15,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143203 states.