./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.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_12-ptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 02:28:26,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:28:26,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:28:26,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:28:26,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:28:26,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:28:26,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:28:27,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:28:27,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:28:27,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:28:27,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:28:27,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:28:27,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:28:27,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:28:27,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:28:27,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:28:27,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:28:27,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:28:27,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:28:27,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:28:27,027 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:28:27,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:28:27,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:28:27,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:28:27,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:28:27,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:28:27,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:28:27,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:28:27,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:28:27,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:28:27,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:28:27,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:28:27,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:28:27,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:28:27,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:28:27,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:28:27,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:28:27,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:28:27,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:28:27,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:28:27,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:28:27,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:28:27,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-13 02:28:27,078 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:28:27,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:28:27,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:28:27,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:28:27,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:28:27,080 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:28:27,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:28:27,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:28:27,081 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:28:27,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:28:27,082 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 02:28:27,083 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:28:27,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:28:27,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 02:28:27,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:28:27,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:28:27,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:28:27,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:28:27,084 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:28:27,085 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 02:28:27,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:28:27,085 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:28:27,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:28:27,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:28:27,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:28:27,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:28:27,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:28:27,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:28:27,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:28:27,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:28:27,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:28:27,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:28:27,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:28:27,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2022-07-13 02:28:27,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:28:27,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:28:27,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:28:27,402 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:28:27,403 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:28:27,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-07-13 02:28:27,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/228b17018/1129f78789984ca9991ff396353dbac9/FLAGa978c9bc8 [2022-07-13 02:28:27,947 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:28:27,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2022-07-13 02:28:27,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/228b17018/1129f78789984ca9991ff396353dbac9/FLAGa978c9bc8 [2022-07-13 02:28:27,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/228b17018/1129f78789984ca9991ff396353dbac9 [2022-07-13 02:28:27,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:28:27,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:28:27,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:28:27,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:28:27,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:28:27,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:28:27" (1/1) ... [2022-07-13 02:28:28,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de7e716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:28, skipping insertion in model container [2022-07-13 02:28:28,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:28:27" (1/1) ... [2022-07-13 02:28:28,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:28:28,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:28:28,425 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_12-ptr_racefree.i[30176,30189] [2022-07-13 02:28:28,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:28:28,461 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:28:28,504 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_12-ptr_racefree.i[30176,30189] [2022-07-13 02:28:28,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:28:28,561 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:28:28,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:28 WrapperNode [2022-07-13 02:28:28,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:28:28,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:28:28,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:28:28,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:28:28,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:28" (1/1) ... [2022-07-13 02:28:28,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:28" (1/1) ... [2022-07-13 02:28:28,632 INFO L137 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2022-07-13 02:28:28,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:28:28,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:28:28,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:28:28,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:28:28,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:28" (1/1) ... [2022-07-13 02:28:28,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:28" (1/1) ... [2022-07-13 02:28:28,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:28" (1/1) ... [2022-07-13 02:28:28,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:28" (1/1) ... [2022-07-13 02:28:28,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:28" (1/1) ... [2022-07-13 02:28:28,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:28" (1/1) ... [2022-07-13 02:28:28,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:28" (1/1) ... [2022-07-13 02:28:28,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:28:28,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:28:28,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:28:28,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:28:28,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:28" (1/1) ... [2022-07-13 02:28:28,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:28:28,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:28:28,721 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 02:28:28,723 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 02:28:28,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 02:28:28,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 02:28:28,753 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-13 02:28:28,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 02:28:28,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 02:28:28,753 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-13 02:28:28,753 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-13 02:28:28,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 02:28:28,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 02:28:28,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:28:28,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:28:28,754 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 02:28:28,857 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:28:28,859 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:28:29,056 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:28:29,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:28:29,064 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-13 02:28:29,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:28:29 BoogieIcfgContainer [2022-07-13 02:28:29,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:28:29,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:28:29,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:28:29,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:28:29,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:28:27" (1/3) ... [2022-07-13 02:28:29,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12205ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:28:29, skipping insertion in model container [2022-07-13 02:28:29,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:28:28" (2/3) ... [2022-07-13 02:28:29,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12205ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:28:29, skipping insertion in model container [2022-07-13 02:28:29,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:28:29" (3/3) ... [2022-07-13 02:28:29,081 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2022-07-13 02:28:29,086 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 02:28:29,095 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:28:29,095 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-07-13 02:28:29,095 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 02:28:29,183 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-13 02:28:29,224 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-13 02:28:29,237 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 138 transitions, 284 flow [2022-07-13 02:28:29,241 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 138 transitions, 284 flow [2022-07-13 02:28:29,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 129 places, 138 transitions, 284 flow [2022-07-13 02:28:29,331 INFO L129 PetriNetUnfolder]: 17/175 cut-off events. [2022-07-13 02:28:29,332 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-13 02:28:29,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 175 events. 17/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 418 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2022-07-13 02:28:29,342 INFO L116 LiptonReduction]: Number of co-enabled transitions 3854 [2022-07-13 02:28:33,228 INFO L131 LiptonReduction]: Checked pairs total: 6826 [2022-07-13 02:28:33,229 INFO L133 LiptonReduction]: Total number of compositions: 133 [2022-07-13 02:28:33,236 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 41 transitions, 90 flow [2022-07-13 02:28:33,265 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 220 states, 193 states have (on average 2.6528497409326426) internal successors, (512), 219 states have internal predecessors, (512), 0 states have call successors, (0), 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 02:28:33,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:28:33,283 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@4843f5e4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@38ecbe6d [2022-07-13 02:28:33,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-07-13 02:28:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 220 states, 193 states have (on average 2.6528497409326426) internal successors, (512), 219 states have internal predecessors, (512), 0 states have call successors, (0), 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 02:28:33,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-13 02:28:33,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:33,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-13 02:28:33,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-07-13 02:28:33,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash 16377781, now seen corresponding path program 1 times [2022-07-13 02:28:33,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:33,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193912254] [2022-07-13 02:28:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:33,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:33,478 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 02:28:33,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:33,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193912254] [2022-07-13 02:28:33,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193912254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:33,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:33,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-13 02:28:33,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575579208] [2022-07-13 02:28:33,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:33,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:28:33,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:33,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:28:33,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:28:33,519 INFO L87 Difference]: Start difference. First operand has 220 states, 193 states have (on average 2.6528497409326426) internal successors, (512), 219 states have internal predecessors, (512), 0 states have call successors, (0), 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 02:28:33,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:33,601 INFO L93 Difference]: Finished difference Result 200 states and 364 transitions. [2022-07-13 02:28:33,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:28:33,604 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 02:28:33,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:33,612 INFO L225 Difference]: With dead ends: 200 [2022-07-13 02:28:33,613 INFO L226 Difference]: Without dead ends: 194 [2022-07-13 02:28:33,614 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 02:28:33,617 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:33,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 8 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:28:33,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-13 02:28:33,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-07-13 02:28:33,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 174 states have (on average 2.0344827586206895) internal successors, (354), 193 states have internal predecessors, (354), 0 states have call successors, (0), 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 02:28:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 354 transitions. [2022-07-13 02:28:33,661 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 354 transitions. Word has length 4 [2022-07-13 02:28:33,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:33,662 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 354 transitions. [2022-07-13 02:28:33,662 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 02:28:33,663 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 354 transitions. [2022-07-13 02:28:33,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-13 02:28:33,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:33,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-13 02:28:33,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:28:33,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-07-13 02:28:33,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:33,664 INFO L85 PathProgramCache]: Analyzing trace with hash 16377779, now seen corresponding path program 1 times [2022-07-13 02:28:33,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:33,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470985084] [2022-07-13 02:28:33,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:33,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:33,739 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 02:28:33,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:33,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470985084] [2022-07-13 02:28:33,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470985084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:33,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:33,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-13 02:28:33,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899687891] [2022-07-13 02:28:33,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:33,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:28:33,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:33,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:28:33,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:28:33,746 INFO L87 Difference]: Start difference. First operand 194 states and 354 transitions. 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 02:28:33,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:33,785 INFO L93 Difference]: Finished difference Result 178 states and 323 transitions. [2022-07-13 02:28:33,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:28:33,786 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 02:28:33,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:33,788 INFO L225 Difference]: With dead ends: 178 [2022-07-13 02:28:33,788 INFO L226 Difference]: Without dead ends: 178 [2022-07-13 02:28:33,791 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 02:28:33,793 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:33,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 4 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:28:33,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-07-13 02:28:33,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-07-13 02:28:33,804 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 02:28:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 323 transitions. [2022-07-13 02:28:33,806 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 323 transitions. Word has length 4 [2022-07-13 02:28:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:33,806 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 323 transitions. [2022-07-13 02:28:33,807 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 02:28:33,807 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 323 transitions. [2022-07-13 02:28:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-13 02:28:33,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:33,807 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-07-13 02:28:33,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 02:28:33,808 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-07-13 02:28:33,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:33,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1440807479, now seen corresponding path program 1 times [2022-07-13 02:28:33,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:33,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013752172] [2022-07-13 02:28:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:33,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:28:33,837 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 02:28:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:28:33,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 02:28:33,891 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 02:28:33,892 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-07-13 02:28:33,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-07-13 02:28:33,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-07-13 02:28:33,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-07-13 02:28:33,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-07-13 02:28:33,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-07-13 02:28:33,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-07-13 02:28:33,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-07-13 02:28:33,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-07-13 02:28:33,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-07-13 02:28:33,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-07-13 02:28:33,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-07-13 02:28:33,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-07-13 02:28:33,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 02:28:33,900 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-13 02:28:33,902 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 02:28:33,903 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-13 02:28:33,931 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 02:28:33,939 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-13 02:28:33,940 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 181 transitions, 380 flow [2022-07-13 02:28:33,942 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 181 transitions, 380 flow [2022-07-13 02:28:33,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 167 places, 181 transitions, 380 flow [2022-07-13 02:28:34,023 INFO L129 PetriNetUnfolder]: 31/292 cut-off events. [2022-07-13 02:28:34,024 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-13 02:28:34,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 31/292 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. 0/239 useless extension candidates. Maximal degree in co-relation 177. Up to 8 conditions per place. [2022-07-13 02:28:34,041 INFO L116 LiptonReduction]: Number of co-enabled transitions 12628 [2022-07-13 02:28:38,083 INFO L131 LiptonReduction]: Checked pairs total: 27414 [2022-07-13 02:28:38,084 INFO L133 LiptonReduction]: Total number of compositions: 168 [2022-07-13 02:28:38,085 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 66 transitions, 150 flow [2022-07-13 02:28:38,225 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 02:28:38,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:28:38,227 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@4843f5e4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@38ecbe6d [2022-07-13 02:28:38,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-07-13 02:28:38,243 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 02:28:38,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-13 02:28:38,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:38,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-13 02:28:38,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-13 02:28:38,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:38,245 INFO L85 PathProgramCache]: Analyzing trace with hash 881694902, now seen corresponding path program 1 times [2022-07-13 02:28:38,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:38,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267041630] [2022-07-13 02:28:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:38,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:38,346 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 02:28:38,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:38,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267041630] [2022-07-13 02:28:38,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267041630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:38,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:38,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-13 02:28:38,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851813015] [2022-07-13 02:28:38,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:38,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:28:38,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:38,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:28:38,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:28:38,362 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 02:28:38,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:38,512 INFO L93 Difference]: Finished difference Result 3945 states and 10756 transitions. [2022-07-13 02:28:38,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:28:38,513 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 02:28:38,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:38,538 INFO L225 Difference]: With dead ends: 3945 [2022-07-13 02:28:38,539 INFO L226 Difference]: Without dead ends: 3919 [2022-07-13 02:28:38,539 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 02:28:38,540 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:38,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:28:38,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2022-07-13 02:28:38,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3919. [2022-07-13 02:28:38,703 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 02:28:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 10690 transitions. [2022-07-13 02:28:38,726 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 10690 transitions. Word has length 5 [2022-07-13 02:28:38,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:38,727 INFO L495 AbstractCegarLoop]: Abstraction has 3919 states and 10690 transitions. [2022-07-13 02:28:38,728 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 02:28:38,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 10690 transitions. [2022-07-13 02:28:38,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 02:28:38,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:38,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:28:38,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 02:28:38,730 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 02:28:38,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:38,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1207888369, now seen corresponding path program 1 times [2022-07-13 02:28:38,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:38,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068533942] [2022-07-13 02:28:38,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:38,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:38,944 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 02:28:38,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:38,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068533942] [2022-07-13 02:28:38,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068533942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:38,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:38,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:28:38,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826440067] [2022-07-13 02:28:38,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:38,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:28:38,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:38,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:28:38,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:28:38,947 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 02:28:39,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:39,177 INFO L93 Difference]: Finished difference Result 4316 states and 11841 transitions. [2022-07-13 02:28:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:28:39,178 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 02:28:39,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:39,210 INFO L225 Difference]: With dead ends: 4316 [2022-07-13 02:28:39,210 INFO L226 Difference]: Without dead ends: 4316 [2022-07-13 02:28:39,211 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 02:28:39,211 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 96 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:39,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 24 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:28:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4316 states. [2022-07-13 02:28:39,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4316 to 4214. [2022-07-13 02:28:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4214 states, 4061 states have (on average 2.84338832799803) internal successors, (11547), 4213 states have internal predecessors, (11547), 0 states have call successors, (0), 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 02:28:39,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4214 states to 4214 states and 11547 transitions. [2022-07-13 02:28:39,391 INFO L78 Accepts]: Start accepts. Automaton has 4214 states and 11547 transitions. Word has length 7 [2022-07-13 02:28:39,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:39,391 INFO L495 AbstractCegarLoop]: Abstraction has 4214 states and 11547 transitions. [2022-07-13 02:28:39,391 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 02:28:39,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4214 states and 11547 transitions. [2022-07-13 02:28:39,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:28:39,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:39,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-13 02:28:39,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 02:28:39,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-13 02:28:39,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:39,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1873668324, now seen corresponding path program 1 times [2022-07-13 02:28:39,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:39,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271449481] [2022-07-13 02:28:39,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:39,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:39,425 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 02:28:39,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:39,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271449481] [2022-07-13 02:28:39,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271449481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:39,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:39,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:28:39,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446648886] [2022-07-13 02:28:39,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:39,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:28:39,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:39,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:28:39,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:28:39,429 INFO L87 Difference]: Start difference. First operand 4214 states and 11547 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 02:28:39,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:39,510 INFO L93 Difference]: Finished difference Result 3937 states and 10748 transitions. [2022-07-13 02:28:39,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:28:39,511 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 02:28:39,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:39,536 INFO L225 Difference]: With dead ends: 3937 [2022-07-13 02:28:39,537 INFO L226 Difference]: Without dead ends: 3937 [2022-07-13 02:28:39,537 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 02:28:39,539 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:39,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 8 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:28:39,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3937 states. [2022-07-13 02:28:39,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3937. [2022-07-13 02:28:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3937 states, 3809 states have (on average 2.8217379889734837) internal successors, (10748), 3936 states have internal predecessors, (10748), 0 states have call successors, (0), 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 02:28:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3937 states to 3937 states and 10748 transitions. [2022-07-13 02:28:39,691 INFO L78 Accepts]: Start accepts. Automaton has 3937 states and 10748 transitions. Word has length 9 [2022-07-13 02:28:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:39,692 INFO L495 AbstractCegarLoop]: Abstraction has 3937 states and 10748 transitions. [2022-07-13 02:28:39,692 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 02:28:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3937 states and 10748 transitions. [2022-07-13 02:28:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:28:39,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:39,693 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-13 02:28:39,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 02:28:39,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-13 02:28:39,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:39,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1873668346, now seen corresponding path program 1 times [2022-07-13 02:28:39,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:39,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060086886] [2022-07-13 02:28:39,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:39,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:39,716 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 02:28:39,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:39,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060086886] [2022-07-13 02:28:39,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060086886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:39,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:39,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:28:39,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237506584] [2022-07-13 02:28:39,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:39,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:28:39,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:39,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:28:39,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:28:39,719 INFO L87 Difference]: Start difference. First operand 3937 states and 10748 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 02:28:39,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:39,814 INFO L93 Difference]: Finished difference Result 3660 states and 9949 transitions. [2022-07-13 02:28:39,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:28:39,815 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 02:28:39,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:39,866 INFO L225 Difference]: With dead ends: 3660 [2022-07-13 02:28:39,867 INFO L226 Difference]: Without dead ends: 3660 [2022-07-13 02:28:39,867 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 02:28:39,868 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 32 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:39,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 14 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:28:39,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3660 states. [2022-07-13 02:28:39,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3660 to 3660. [2022-07-13 02:28:39,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3557 states have (on average 2.7970199606409896) internal successors, (9949), 3659 states have internal predecessors, (9949), 0 states have call successors, (0), 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 02:28:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 9949 transitions. [2022-07-13 02:28:39,993 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 9949 transitions. Word has length 9 [2022-07-13 02:28:39,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:39,994 INFO L495 AbstractCegarLoop]: Abstraction has 3660 states and 9949 transitions. [2022-07-13 02:28:39,994 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 02:28:39,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 9949 transitions. [2022-07-13 02:28:39,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 02:28:39,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:39,996 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:28:39,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 02:28:39,996 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 02:28:39,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:39,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2025124233, now seen corresponding path program 1 times [2022-07-13 02:28:39,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:39,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563283364] [2022-07-13 02:28:39,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:39,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:40,118 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 02:28:40,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:40,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563283364] [2022-07-13 02:28:40,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563283364] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:28:40,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593235911] [2022-07-13 02:28:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:40,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:28:40,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:28:40,122 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 02:28:40,131 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 02:28:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:40,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:28:40,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:28:40,274 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 02:28:40,275 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 02:28:40,303 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 02:28:40,356 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 02:28:40,380 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 02:28:40,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:28:40,403 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_60 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_60) c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset) 2147483646)) is different from false [2022-07-13 02:28:40,410 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_60 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_60) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483646)) is different from false [2022-07-13 02:28:40,424 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 02:28:40,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593235911] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:28:40,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:28:40,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-07-13 02:28:40,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034606261] [2022-07-13 02:28:40,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:28:40,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:28:40,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:40,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:28:40,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=53, Unknown=2, NotChecked=30, Total=110 [2022-07-13 02:28:40,427 INFO L87 Difference]: Start difference. First operand 3660 states and 9949 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 02:28:40,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:40,840 INFO L93 Difference]: Finished difference Result 4266 states and 11355 transitions. [2022-07-13 02:28:40,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:28:40,840 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 02:28:40,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:40,878 INFO L225 Difference]: With dead ends: 4266 [2022-07-13 02:28:40,878 INFO L226 Difference]: Without dead ends: 4266 [2022-07-13 02:28:40,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=96, Unknown=2, NotChecked=42, Total=182 [2022-07-13 02:28:40,880 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 98 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:40,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 91 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 406 Invalid, 0 Unknown, 160 Unchecked, 0.3s Time] [2022-07-13 02:28:40,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2022-07-13 02:28:40,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 3368. [2022-07-13 02:28:40,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 3273 states have (on average 2.780018331805683) internal successors, (9099), 3367 states have internal predecessors, (9099), 0 states have call successors, (0), 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 02:28:41,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 9099 transitions. [2022-07-13 02:28:41,023 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 9099 transitions. Word has length 10 [2022-07-13 02:28:41,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:41,023 INFO L495 AbstractCegarLoop]: Abstraction has 3368 states and 9099 transitions. [2022-07-13 02:28:41,024 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 02:28:41,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 9099 transitions. [2022-07-13 02:28:41,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 02:28:41,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:41,029 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-07-13 02:28:41,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 02:28:41,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:28:41,256 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-13 02:28:41,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:41,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1003922277, now seen corresponding path program 1 times [2022-07-13 02:28:41,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:41,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191052318] [2022-07-13 02:28:41,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:41,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:28:41,273 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 02:28:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:28:41,287 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 02:28:41,288 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 02:28:41,288 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-07-13 02:28:41,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-07-13 02:28:41,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-07-13 02:28:41,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-07-13 02:28:41,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-07-13 02:28:41,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-07-13 02:28:41,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-07-13 02:28:41,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-07-13 02:28:41,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-07-13 02:28:41,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-07-13 02:28:41,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-07-13 02:28:41,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-07-13 02:28:41,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-07-13 02:28:41,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-07-13 02:28:41,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-07-13 02:28:41,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-07-13 02:28:41,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-07-13 02:28:41,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 02:28:41,292 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-13 02:28:41,293 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 02:28:41,293 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-13 02:28:41,311 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 02:28:41,314 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-13 02:28:41,314 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 224 transitions, 478 flow [2022-07-13 02:28:41,314 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 224 transitions, 478 flow [2022-07-13 02:28:41,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 224 transitions, 478 flow [2022-07-13 02:28:41,367 INFO L129 PetriNetUnfolder]: 50/450 cut-off events. [2022-07-13 02:28:41,368 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-07-13 02:28:41,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 450 events. 50/450 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1589 event pairs, 1 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2022-07-13 02:28:41,396 INFO L116 LiptonReduction]: Number of co-enabled transitions 24354 [2022-07-13 02:28:45,838 INFO L131 LiptonReduction]: Checked pairs total: 51382 [2022-07-13 02:28:45,838 INFO L133 LiptonReduction]: Total number of compositions: 198 [2022-07-13 02:28:45,839 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 90 transitions, 210 flow [2022-07-13 02:28:48,162 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 02:28:48,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:28:48,164 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@4843f5e4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@38ecbe6d [2022-07-13 02:28:48,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-07-13 02:28:48,463 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 02:28:48,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-13 02:28:48,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:48,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-13 02:28:48,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:28:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:48,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1324877447, now seen corresponding path program 1 times [2022-07-13 02:28:48,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:48,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570772724] [2022-07-13 02:28:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:48,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:48,491 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 02:28:48,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:48,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570772724] [2022-07-13 02:28:48,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570772724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:48,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:48,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-13 02:28:48,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179083740] [2022-07-13 02:28:48,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:48,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:28:48,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:48,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:28:48,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:28:48,650 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 02:28:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:50,025 INFO L93 Difference]: Finished difference Result 65753 states and 238574 transitions. [2022-07-13 02:28:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:28:50,026 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 02:28:50,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:50,871 INFO L225 Difference]: With dead ends: 65753 [2022-07-13 02:28:50,874 INFO L226 Difference]: Without dead ends: 65627 [2022-07-13 02:28:50,875 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 02:28:50,875 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:50,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 18 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:28:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65627 states. [2022-07-13 02:28:53,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65627 to 65627. [2022-07-13 02:28:53,705 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 02:28:54,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65627 states to 65627 states and 238148 transitions. [2022-07-13 02:28:54,318 INFO L78 Accepts]: Start accepts. Automaton has 65627 states and 238148 transitions. Word has length 5 [2022-07-13 02:28:54,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:54,318 INFO L495 AbstractCegarLoop]: Abstraction has 65627 states and 238148 transitions. [2022-07-13 02:28:54,318 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 02:28:54,319 INFO L276 IsEmpty]: Start isEmpty. Operand 65627 states and 238148 transitions. [2022-07-13 02:28:54,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 02:28:54,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:54,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:28:54,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 02:28:54,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:28:54,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:54,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1907428470, now seen corresponding path program 1 times [2022-07-13 02:28:54,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:54,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501324581] [2022-07-13 02:28:54,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:54,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:54,366 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 02:28:54,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:54,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501324581] [2022-07-13 02:28:54,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501324581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:54,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:28:54,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:28:54,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893204487] [2022-07-13 02:28:54,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:54,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:28:54,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:54,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:28:54,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:28:54,369 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 02:28:55,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:55,357 INFO L93 Difference]: Finished difference Result 68887 states and 250415 transitions. [2022-07-13 02:28:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:28:55,358 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 02:28:55,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:55,798 INFO L225 Difference]: With dead ends: 68887 [2022-07-13 02:28:55,799 INFO L226 Difference]: Without dead ends: 68887 [2022-07-13 02:28:55,799 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 02:28:55,801 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 129 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:55,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 37 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:28:55,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68887 states. [2022-07-13 02:28:57,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68887 to 67980. [2022-07-13 02:28:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67980 states, 67041 states have (on average 3.6858638743455496) internal successors, (247104), 67979 states have internal predecessors, (247104), 0 states have call successors, (0), 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 02:28:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67980 states to 67980 states and 247104 transitions. [2022-07-13 02:28:58,813 INFO L78 Accepts]: Start accepts. Automaton has 67980 states and 247104 transitions. Word has length 7 [2022-07-13 02:28:58,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:58,813 INFO L495 AbstractCegarLoop]: Abstraction has 67980 states and 247104 transitions. [2022-07-13 02:28:58,813 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 02:28:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 67980 states and 247104 transitions. [2022-07-13 02:28:58,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:28:58,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:58,814 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-13 02:28:58,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 02:28:58,814 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:28:58,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:58,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1928489213, now seen corresponding path program 1 times [2022-07-13 02:28:58,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:58,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252842616] [2022-07-13 02:28:58,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:58,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:58,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:58,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252842616] [2022-07-13 02:28:58,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252842616] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:28:58,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916825604] [2022-07-13 02:28:58,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:58,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:28:58,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:28:58,869 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 02:28:58,870 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 02:28:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:58,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 02:28:58,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:28:58,958 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 02:28:58,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:28:58,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916825604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:28:58,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:28:58,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-07-13 02:28:58,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772103564] [2022-07-13 02:28:58,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:28:58,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:28:58,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:28:58,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:28:58,960 INFO L87 Difference]: Start difference. First operand 67980 states and 247104 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:59,455 INFO L93 Difference]: Finished difference Result 63460 states and 230101 transitions. [2022-07-13 02:28:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:28:59,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-13 02:28:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:00,346 INFO L225 Difference]: With dead ends: 63460 [2022-07-13 02:29:00,346 INFO L226 Difference]: Without dead ends: 63460 [2022-07-13 02:29:00,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:29:00,347 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 125 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:00,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 17 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:29:00,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63460 states. [2022-07-13 02:29:02,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63460 to 63460. [2022-07-13 02:29:02,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63460 states, 62671 states have (on average 3.671570582885226) internal successors, (230101), 63459 states have internal predecessors, (230101), 0 states have call successors, (0), 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 02:29:02,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63460 states to 63460 states and 230101 transitions. [2022-07-13 02:29:02,472 INFO L78 Accepts]: Start accepts. Automaton has 63460 states and 230101 transitions. Word has length 9 [2022-07-13 02:29:02,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:02,473 INFO L495 AbstractCegarLoop]: Abstraction has 63460 states and 230101 transitions. [2022-07-13 02:29:02,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:02,473 INFO L276 IsEmpty]: Start isEmpty. Operand 63460 states and 230101 transitions. [2022-07-13 02:29:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:29:02,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:02,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-13 02:29:02,491 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 02:29:02,674 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,SelfDestructingSolverStorable11 [2022-07-13 02:29:02,674 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:29:02,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:02,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1928489214, now seen corresponding path program 1 times [2022-07-13 02:29:02,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:02,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710479582] [2022-07-13 02:29:02,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:02,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:02,694 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 02:29:02,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:02,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710479582] [2022-07-13 02:29:02,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710479582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:29:02,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:29:02,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:29:02,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156006597] [2022-07-13 02:29:02,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:29:02,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:29:02,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:02,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:29:02,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:29:02,698 INFO L87 Difference]: Start difference. First operand 63460 states and 230101 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 02:29:03,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:03,708 INFO L93 Difference]: Finished difference Result 58940 states and 213098 transitions. [2022-07-13 02:29:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:29:03,709 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 02:29:03,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:04,013 INFO L225 Difference]: With dead ends: 58940 [2022-07-13 02:29:04,014 INFO L226 Difference]: Without dead ends: 58940 [2022-07-13 02:29:04,014 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 02:29:04,014 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 48 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:04,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 16 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:29:04,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58940 states. [2022-07-13 02:29:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58940 to 58940. [2022-07-13 02:29:05,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58940 states, 58301 states have (on average 3.655134560299137) internal successors, (213098), 58939 states have internal predecessors, (213098), 0 states have call successors, (0), 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 02:29:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58940 states to 58940 states and 213098 transitions. [2022-07-13 02:29:06,449 INFO L78 Accepts]: Start accepts. Automaton has 58940 states and 213098 transitions. Word has length 9 [2022-07-13 02:29:06,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:06,450 INFO L495 AbstractCegarLoop]: Abstraction has 58940 states and 213098 transitions. [2022-07-13 02:29:06,450 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 02:29:06,450 INFO L276 IsEmpty]: Start isEmpty. Operand 58940 states and 213098 transitions. [2022-07-13 02:29:06,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 02:29:06,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:06,450 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:29:06,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 02:29:06,451 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:29:06,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:06,451 INFO L85 PathProgramCache]: Analyzing trace with hash -335205541, now seen corresponding path program 1 times [2022-07-13 02:29:06,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:06,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808272712] [2022-07-13 02:29:06,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:06,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:06,533 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 02:29:06,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:06,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808272712] [2022-07-13 02:29:06,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808272712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:29:06,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148227850] [2022-07-13 02:29:06,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:06,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:29:06,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:29:06,536 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 02:29:06,537 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 02:29:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:06,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:29:06,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:29:06,627 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 02:29:06,628 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 02:29:06,654 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 02:29:06,723 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 02:29:06,742 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 02:29:06,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:29:06,764 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_120 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_120) c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset) 2147483646)) is different from false [2022-07-13 02:29:06,775 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_120 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_120) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483646)) is different from false [2022-07-13 02:29:06,791 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 02:29:06,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148227850] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:29:06,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:29:06,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-07-13 02:29:06,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079443915] [2022-07-13 02:29:06,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:29:06,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:29:06,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:06,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:29:06,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=53, Unknown=2, NotChecked=30, Total=110 [2022-07-13 02:29:06,795 INFO L87 Difference]: Start difference. First operand 58940 states and 213098 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 02:29:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:07,707 INFO L93 Difference]: Finished difference Result 66501 states and 234616 transitions. [2022-07-13 02:29:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:29:07,708 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 02:29:07,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:08,047 INFO L225 Difference]: With dead ends: 66501 [2022-07-13 02:29:08,047 INFO L226 Difference]: Without dead ends: 66501 [2022-07-13 02:29:08,048 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 02:29:08,048 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 198 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:08,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 126 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 707 Invalid, 0 Unknown, 274 Unchecked, 0.4s Time] [2022-07-13 02:29:08,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66501 states. [2022-07-13 02:29:09,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66501 to 55715. [2022-07-13 02:29:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55715 states, 55100 states have (on average 3.642431941923775) internal successors, (200698), 55714 states have internal predecessors, (200698), 0 states have call successors, (0), 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 02:29:10,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55715 states to 55715 states and 200698 transitions. [2022-07-13 02:29:10,631 INFO L78 Accepts]: Start accepts. Automaton has 55715 states and 200698 transitions. Word has length 10 [2022-07-13 02:29:10,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:10,631 INFO L495 AbstractCegarLoop]: Abstraction has 55715 states and 200698 transitions. [2022-07-13 02:29:10,631 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 02:29:10,631 INFO L276 IsEmpty]: Start isEmpty. Operand 55715 states and 200698 transitions. [2022-07-13 02:29:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 02:29:10,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:10,632 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:29:10,648 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 02:29:10,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:29:10,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:29:10,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:10,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2137352587, now seen corresponding path program 1 times [2022-07-13 02:29:10,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:10,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265630362] [2022-07-13 02:29:10,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:10,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:10,907 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 02:29:10,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:10,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265630362] [2022-07-13 02:29:10,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265630362] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:29:10,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109137409] [2022-07-13 02:29:10,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:10,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:29:10,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:29:10,909 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 02:29:10,909 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 02:29:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:10,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:29:10,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:29:10,986 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 02:29:10,986 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 02:29:11,009 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 02:29:11,038 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 02:29:11,088 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 02:29:11,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:29:11,119 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_142 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_142) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483646)) is different from false [2022-07-13 02:29:11,130 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 02:29:11,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109137409] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:29:11,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:29:11,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-07-13 02:29:11,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120277745] [2022-07-13 02:29:11,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:29:11,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:29:11,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:11,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:29:11,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=66, Unknown=1, NotChecked=16, Total=110 [2022-07-13 02:29:11,132 INFO L87 Difference]: Start difference. First operand 55715 states and 200698 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 02:29:11,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:11,949 INFO L93 Difference]: Finished difference Result 63283 states and 222649 transitions. [2022-07-13 02:29:11,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:29:11,949 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 02:29:11,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:12,253 INFO L225 Difference]: With dead ends: 63283 [2022-07-13 02:29:12,253 INFO L226 Difference]: Without dead ends: 63283 [2022-07-13 02:29:12,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=123, Unknown=1, NotChecked=24, Total=210 [2022-07-13 02:29:12,254 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 208 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:12,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 116 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 655 Invalid, 0 Unknown, 87 Unchecked, 0.3s Time] [2022-07-13 02:29:12,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63283 states. [2022-07-13 02:29:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63283 to 54783. [2022-07-13 02:29:14,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54783 states, 54168 states have (on average 3.6391596514547335) internal successors, (197126), 54782 states have internal predecessors, (197126), 0 states have call successors, (0), 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 02:29:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54783 states to 54783 states and 197126 transitions. [2022-07-13 02:29:14,771 INFO L78 Accepts]: Start accepts. Automaton has 54783 states and 197126 transitions. Word has length 11 [2022-07-13 02:29:14,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:14,771 INFO L495 AbstractCegarLoop]: Abstraction has 54783 states and 197126 transitions. [2022-07-13 02:29:14,772 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-07-13 02:29:14,772 INFO L276 IsEmpty]: Start isEmpty. Operand 54783 states and 197126 transitions. [2022-07-13 02:29:14,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 02:29:14,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:14,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:29:14,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-13 02:29:14,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-13 02:29:14,973 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:29:14,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:14,973 INFO L85 PathProgramCache]: Analyzing trace with hash -482294667, now seen corresponding path program 1 times [2022-07-13 02:29:14,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:14,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546093710] [2022-07-13 02:29:14,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:14,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:15,029 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 02:29:15,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:15,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546093710] [2022-07-13 02:29:15,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546093710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:29:15,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:29:15,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 02:29:15,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391300659] [2022-07-13 02:29:15,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:29:15,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 02:29:15,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:15,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 02:29:15,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:29:15,032 INFO L87 Difference]: Start difference. First operand 54783 states and 197126 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 02:29:16,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:16,063 INFO L93 Difference]: Finished difference Result 82841 states and 298692 transitions. [2022-07-13 02:29:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 02:29:16,063 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 02:29:16,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:16,500 INFO L225 Difference]: With dead ends: 82841 [2022-07-13 02:29:16,500 INFO L226 Difference]: Without dead ends: 82841 [2022-07-13 02:29:16,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-07-13 02:29:16,501 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 293 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:16,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 113 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 02:29:16,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82841 states. [2022-07-13 02:29:19,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82841 to 69760. [2022-07-13 02:29:19,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69760 states, 69145 states have (on average 3.7043604020536556) internal successors, (256138), 69759 states have internal predecessors, (256138), 0 states have call successors, (0), 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 02:29:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69760 states to 69760 states and 256138 transitions. [2022-07-13 02:29:19,530 INFO L78 Accepts]: Start accepts. Automaton has 69760 states and 256138 transitions. Word has length 11 [2022-07-13 02:29:19,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:19,530 INFO L495 AbstractCegarLoop]: Abstraction has 69760 states and 256138 transitions. [2022-07-13 02:29:19,530 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 02:29:19,530 INFO L276 IsEmpty]: Start isEmpty. Operand 69760 states and 256138 transitions. [2022-07-13 02:29:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 02:29:19,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:19,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:29:19,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 02:29:19,531 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:29:19,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:19,531 INFO L85 PathProgramCache]: Analyzing trace with hash -482294747, now seen corresponding path program 1 times [2022-07-13 02:29:19,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:19,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899315076] [2022-07-13 02:29:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:19,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:19,565 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 02:29:19,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:19,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899315076] [2022-07-13 02:29:19,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899315076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:29:19,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:29:19,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:29:19,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412733064] [2022-07-13 02:29:19,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:29:19,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:29:19,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:19,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:29:19,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:29:19,568 INFO L87 Difference]: Start difference. First operand 69760 states and 256138 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 02:29:21,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:21,145 INFO L93 Difference]: Finished difference Result 105614 states and 378241 transitions. [2022-07-13 02:29:21,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:29:21,146 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 02:29:21,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:21,761 INFO L225 Difference]: With dead ends: 105614 [2022-07-13 02:29:21,761 INFO L226 Difference]: Without dead ends: 105545 [2022-07-13 02:29:21,762 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 02:29:21,762 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 171 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:21,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 46 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:29:21,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105545 states. [2022-07-13 02:29:24,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105545 to 79981. [2022-07-13 02:29:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79981 states, 79366 states have (on average 3.704999622004385) internal successors, (294051), 79980 states have internal predecessors, (294051), 0 states have call successors, (0), 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 02:29:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79981 states to 79981 states and 294051 transitions. [2022-07-13 02:29:25,309 INFO L78 Accepts]: Start accepts. Automaton has 79981 states and 294051 transitions. Word has length 11 [2022-07-13 02:29:25,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:25,309 INFO L495 AbstractCegarLoop]: Abstraction has 79981 states and 294051 transitions. [2022-07-13 02:29:25,309 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 02:29:25,310 INFO L276 IsEmpty]: Start isEmpty. Operand 79981 states and 294051 transitions. [2022-07-13 02:29:25,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 02:29:25,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:25,311 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:29:25,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 02:29:25,311 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-13 02:29:25,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:25,312 INFO L85 PathProgramCache]: Analyzing trace with hash -957290278, now seen corresponding path program 1 times [2022-07-13 02:29:25,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:25,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645464380] [2022-07-13 02:29:25,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:25,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:25,367 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 02:29:25,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:25,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645464380] [2022-07-13 02:29:25,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645464380] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:29:25,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845819948] [2022-07-13 02:29:25,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:25,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:29:25,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:29:25,372 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:29:25,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 02:29:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:25,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 02:29:25,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:29:25,477 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 02:29:25,478 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 02:29:25,510 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 02:29:25,573 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 02:29:25,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-07-13 02:29:25,645 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 02:29:25,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:29:25,689 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_204 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_204) c_t_funThread1of3ForFork0_~p~0.base) c_t_funThread1of3ForFork0_~p~0.offset) 2147483648))) is different from false [2022-07-13 02:29:25,697 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_204 (Array Int Int))) (<= 0 (+ 2147483648 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_204) |c_~#global~0.base|) |c_~#global~0.offset|)))) is different from false [2022-07-13 02:29:25,708 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 02:29:25,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845819948] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:29:25,709 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:29:25,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-07-13 02:29:25,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609847361] [2022-07-13 02:29:25,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:29:25,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 02:29:25,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:29:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 02:29:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=163, Unknown=2, NotChecked=54, Total=272 [2022-07-13 02:29:25,710 INFO L87 Difference]: Start difference. First operand 79981 states and 294051 transitions. Second operand has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:28,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:28,560 INFO L93 Difference]: Finished difference Result 164409 states and 591924 transitions. [2022-07-13 02:29:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 02:29:28,563 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-13 02:29:28,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:29,544 INFO L225 Difference]: With dead ends: 164409 [2022-07-13 02:29:29,545 INFO L226 Difference]: Without dead ends: 164249 [2022-07-13 02:29:29,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=576, Unknown=2, NotChecked=106, Total=870 [2022-07-13 02:29:29,546 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1131 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 419 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:29,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 245 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1567 Invalid, 0 Unknown, 419 Unchecked, 0.9s Time] [2022-07-13 02:29:29,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164249 states.