./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_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 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:11:08,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:11:08,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:11:08,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:11:08,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:11:08,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:11:08,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:11:08,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:11:08,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:11:08,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:11:08,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:11:08,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:11:08,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:11:08,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:11:08,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:11:08,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:11:08,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:11:08,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:11:08,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:11:08,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:11:08,122 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:11:08,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:11:08,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:11:08,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:11:08,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:11:08,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:11:08,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:11:08,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:11:08,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:11:08,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:11:08,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:11:08,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:11:08,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:11:08,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:11:08,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:11:08,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:11:08,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:11:08,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:11:08,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:11:08,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:11:08,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:11:08,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:11:08,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-14 14:11:08,165 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:11:08,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:11:08,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:11:08,167 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:11:08,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 14:11:08,168 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 14:11:08,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:11:08,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:11:08,169 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:11:08,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:11:08,170 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 14:11:08,170 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:11:08,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:11:08,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 14:11:08,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:11:08,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 14:11:08,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 14:11:08,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 14:11:08,171 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 14:11:08,172 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 14:11:08,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:11:08,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:11:08,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 14:11:08,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:11:08,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:11:08,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 14:11:08,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:11:08,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:11:08,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 14:11:08,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 14:11:08,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:11:08,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 14:11:08,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 14:11:08,176 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2022-07-14 14:11:08,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:11:08,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:11:08,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:11:08,400 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:11:08,401 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:11:08,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2022-07-14 14:11:08,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7d8e475/5163ba85ec2a41a6b5be78f3b54ec5e5/FLAG7884b05d2 [2022-07-14 14:11:08,891 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:11:08,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2022-07-14 14:11:08,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7d8e475/5163ba85ec2a41a6b5be78f3b54ec5e5/FLAG7884b05d2 [2022-07-14 14:11:08,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7d8e475/5163ba85ec2a41a6b5be78f3b54ec5e5 [2022-07-14 14:11:08,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:11:08,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:11:08,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:11:08,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:11:08,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:11:08,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:11:08" (1/1) ... [2022-07-14 14:11:08,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3abcf954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:08, skipping insertion in model container [2022-07-14 14:11:08,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:11:08" (1/1) ... [2022-07-14 14:11:08,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:11:08,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:11:09,376 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_70-funloop_racefree.i[41323,41336] [2022-07-14 14:11:09,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:11:09,423 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:11:09,462 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_70-funloop_racefree.i[41323,41336] [2022-07-14 14:11:09,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:11:09,543 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:11:09,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:09 WrapperNode [2022-07-14 14:11:09,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:11:09,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:11:09,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:11:09,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:11:09,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:09" (1/1) ... [2022-07-14 14:11:09,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:09" (1/1) ... [2022-07-14 14:11:09,613 INFO L137 Inliner]: procedures = 271, calls = 31, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 211 [2022-07-14 14:11:09,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:11:09,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:11:09,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:11:09,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:11:09,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:09" (1/1) ... [2022-07-14 14:11:09,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:09" (1/1) ... [2022-07-14 14:11:09,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:09" (1/1) ... [2022-07-14 14:11:09,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:09" (1/1) ... [2022-07-14 14:11:09,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:09" (1/1) ... [2022-07-14 14:11:09,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:09" (1/1) ... [2022-07-14 14:11:09,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:09" (1/1) ... [2022-07-14 14:11:09,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:11:09,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:11:09,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:11:09,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:11:09,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:09" (1/1) ... [2022-07-14 14:11:09,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:11:09,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:11:09,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-14 14:11:09,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-14 14:11:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 14:11:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 14:11:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 14:11:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 14:11:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-14 14:11:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 14:11:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-14 14:11:09,737 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-14 14:11:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 14:11:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:11:09,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:11:09,739 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-14 14:11:09,855 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:11:09,856 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:11:10,161 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:11:10,169 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:11:10,169 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2022-07-14 14:11:10,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:11:10 BoogieIcfgContainer [2022-07-14 14:11:10,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:11:10,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 14:11:10,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 14:11:10,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 14:11:10,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 02:11:08" (1/3) ... [2022-07-14 14:11:10,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a703db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:11:10, skipping insertion in model container [2022-07-14 14:11:10,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:09" (2/3) ... [2022-07-14 14:11:10,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a703db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:11:10, skipping insertion in model container [2022-07-14 14:11:10,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:11:10" (3/3) ... [2022-07-14 14:11:10,177 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2022-07-14 14:11:10,182 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-14 14:11:10,189 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 14:11:10,190 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-07-14 14:11:10,190 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-14 14:11:10,246 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-14 14:11:10,293 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:11:10,305 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 234 transitions, 476 flow [2022-07-14 14:11:10,309 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 234 transitions, 476 flow [2022-07-14 14:11:10,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 204 places, 234 transitions, 476 flow [2022-07-14 14:11:10,386 INFO L129 PetriNetUnfolder]: 49/329 cut-off events. [2022-07-14 14:11:10,387 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-14 14:11:10,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 329 events. 49/329 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1305 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2022-07-14 14:11:10,403 INFO L116 LiptonReduction]: Number of co-enabled transitions 17220 [2022-07-14 14:11:13,757 INFO L131 LiptonReduction]: Checked pairs total: 27684 [2022-07-14 14:11:13,757 INFO L133 LiptonReduction]: Total number of compositions: 210 [2022-07-14 14:11:13,771 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 91 transitions, 190 flow [2022-07-14 14:11:13,836 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 866 states, 779 states have (on average 3.0577663671373556) internal successors, (2382), 865 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:13,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:11:13,861 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@bdfdf49, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@27e1f26b [2022-07-14 14:11:13,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-07-14 14:11:13,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 866 states, 779 states have (on average 3.0577663671373556) internal successors, (2382), 865 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:13,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-07-14 14:11:13,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:13,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-07-14 14:11:13,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-07-14 14:11:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:13,876 INFO L85 PathProgramCache]: Analyzing trace with hash 29560, now seen corresponding path program 1 times [2022-07-14 14:11:13,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:13,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440013950] [2022-07-14 14:11:13,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:13,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:14,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:14,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440013950] [2022-07-14 14:11:14,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440013950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:14,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:11:14,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:11:14,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119531582] [2022-07-14 14:11:14,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:14,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:11:14,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:14,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:11:14,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:14,070 INFO L87 Difference]: Start difference. First operand has 866 states, 779 states have (on average 3.0577663671373556) internal successors, (2382), 865 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:14,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:14,184 INFO L93 Difference]: Finished difference Result 866 states and 1760 transitions. [2022-07-14 14:11:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:11:14,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-07-14 14:11:14,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:14,208 INFO L225 Difference]: With dead ends: 866 [2022-07-14 14:11:14,208 INFO L226 Difference]: Without dead ends: 863 [2022-07-14 14:11:14,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:14,214 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:14,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:14,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-07-14 14:11:14,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2022-07-14 14:11:14,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 779 states have (on average 2.252888318356868) internal successors, (1755), 862 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:14,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1755 transitions. [2022-07-14 14:11:14,280 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1755 transitions. Word has length 2 [2022-07-14 14:11:14,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:14,281 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1755 transitions. [2022-07-14 14:11:14,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:14,281 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1755 transitions. [2022-07-14 14:11:14,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 14:11:14,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:14,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 14:11:14,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 14:11:14,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-07-14 14:11:14,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:14,283 INFO L85 PathProgramCache]: Analyzing trace with hash 917183, now seen corresponding path program 1 times [2022-07-14 14:11:14,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:14,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885173757] [2022-07-14 14:11:14,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:14,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:14,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:14,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885173757] [2022-07-14 14:11:14,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885173757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:14,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:11:14,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:11:14,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372693736] [2022-07-14 14:11:14,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:14,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:11:14,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:14,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:11:14,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:14,328 INFO L87 Difference]: Start difference. First operand 863 states and 1755 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:14,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:14,403 INFO L93 Difference]: Finished difference Result 862 states and 1754 transitions. [2022-07-14 14:11:14,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:11:14,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-07-14 14:11:14,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:14,407 INFO L225 Difference]: With dead ends: 862 [2022-07-14 14:11:14,407 INFO L226 Difference]: Without dead ends: 862 [2022-07-14 14:11:14,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:14,409 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:14,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 11 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:14,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-07-14 14:11:14,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 862. [2022-07-14 14:11:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 779 states have (on average 2.251604621309371) internal successors, (1754), 861 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1754 transitions. [2022-07-14 14:11:14,429 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1754 transitions. Word has length 3 [2022-07-14 14:11:14,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:14,430 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1754 transitions. [2022-07-14 14:11:14,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:14,430 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1754 transitions. [2022-07-14 14:11:14,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 14:11:14,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:14,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-14 14:11:14,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 14:11:14,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-07-14 14:11:14,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:14,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1553993087, now seen corresponding path program 1 times [2022-07-14 14:11:14,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:14,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934726446] [2022-07-14 14:11:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:14,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:14,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:14,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934726446] [2022-07-14 14:11:14,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934726446] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:11:14,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353248886] [2022-07-14 14:11:14,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:14,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:11:14,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:11:14,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:11:14,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 14:11:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:14,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:11:14,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:11:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:14,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:11:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:14,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353248886] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:11:14,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:11:14,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-07-14 14:11:14,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049605693] [2022-07-14 14:11:14,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:11:14,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 14:11:14,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:14,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 14:11:14,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:11:14,606 INFO L87 Difference]: Start difference. First operand 862 states and 1754 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) 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) [2022-07-14 14:11:14,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:14,785 INFO L93 Difference]: Finished difference Result 865 states and 1757 transitions. [2022-07-14 14:11:14,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:11:14,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) 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 6 [2022-07-14 14:11:14,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:14,789 INFO L225 Difference]: With dead ends: 865 [2022-07-14 14:11:14,789 INFO L226 Difference]: Without dead ends: 865 [2022-07-14 14:11:14,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:11:14,791 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:14,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:11:14,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2022-07-14 14:11:14,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 865. [2022-07-14 14:11:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 782 states have (on average 2.2468030690537084) internal successors, (1757), 864 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:14,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1757 transitions. [2022-07-14 14:11:14,814 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1757 transitions. Word has length 6 [2022-07-14 14:11:14,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:14,814 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1757 transitions. [2022-07-14 14:11:14,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) 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) [2022-07-14 14:11:14,815 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1757 transitions. [2022-07-14 14:11:14,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:11:14,815 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:14,815 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2022-07-14 14:11:14,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-14 14:11:15,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:11:15,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-07-14 14:11:15,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:15,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1811562394, now seen corresponding path program 2 times [2022-07-14 14:11:15,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:15,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661082479] [2022-07-14 14:11:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:15,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-14 14:11:15,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:15,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661082479] [2022-07-14 14:11:15,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661082479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:15,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:11:15,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:11:15,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303601102] [2022-07-14 14:11:15,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:15,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:11:15,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:15,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:11:15,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:15,127 INFO L87 Difference]: Start difference. First operand 865 states and 1757 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:15,227 INFO L93 Difference]: Finished difference Result 790 states and 1626 transitions. [2022-07-14 14:11:15,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:11:15,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-14 14:11:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:15,232 INFO L225 Difference]: With dead ends: 790 [2022-07-14 14:11:15,232 INFO L226 Difference]: Without dead ends: 790 [2022-07-14 14:11:15,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:15,233 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:15,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 22 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:15,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-07-14 14:11:15,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2022-07-14 14:11:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 727 states have (on average 2.236588720770289) internal successors, (1626), 789 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1626 transitions. [2022-07-14 14:11:15,251 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1626 transitions. Word has length 9 [2022-07-14 14:11:15,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:15,251 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 1626 transitions. [2022-07-14 14:11:15,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1626 transitions. [2022-07-14 14:11:15,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:11:15,252 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:15,252 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-07-14 14:11:15,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 14:11:15,253 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-07-14 14:11:15,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:15,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1449666443, now seen corresponding path program 1 times [2022-07-14 14:11:15,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:15,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955926999] [2022-07-14 14:11:15,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:15,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:15,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-14 14:11:15,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:15,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955926999] [2022-07-14 14:11:15,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955926999] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:11:15,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061097049] [2022-07-14 14:11:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:15,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:11:15,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:11:15,311 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:11:15,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 14:11:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:15,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:11:15,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:11:15,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-14 14:11:15,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:11:15,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-14 14:11:15,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061097049] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:11:15,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:11:15,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-07-14 14:11:15,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279897734] [2022-07-14 14:11:15,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:11:15,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 14:11:15,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:15,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 14:11:15,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-14 14:11:15,458 INFO L87 Difference]: Start difference. First operand 790 states and 1626 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:15,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:15,610 INFO L93 Difference]: Finished difference Result 796 states and 1632 transitions. [2022-07-14 14:11:15,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 14:11:15,612 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-14 14:11:15,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:15,615 INFO L225 Difference]: With dead ends: 796 [2022-07-14 14:11:15,616 INFO L226 Difference]: Without dead ends: 796 [2022-07-14 14:11:15,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-14 14:11:15,618 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:15,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:15,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-14 14:11:15,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2022-07-14 14:11:15,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 733 states have (on average 2.2264665757162345) internal successors, (1632), 795 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:15,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1632 transitions. [2022-07-14 14:11:15,668 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1632 transitions. Word has length 11 [2022-07-14 14:11:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:15,669 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1632 transitions. [2022-07-14 14:11:15,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:15,669 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1632 transitions. [2022-07-14 14:11:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-14 14:11:15,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:15,670 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-07-14 14:11:15,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 14:11:15,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:11:15,895 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-07-14 14:11:15,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:15,895 INFO L85 PathProgramCache]: Analyzing trace with hash -210454059, now seen corresponding path program 2 times [2022-07-14 14:11:15,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:15,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772769515] [2022-07-14 14:11:15,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:15,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:11:15,935 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:11:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:11:15,990 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:11:15,991 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 14:11:15,992 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-07-14 14:11:15,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-07-14 14:11:15,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-07-14 14:11:15,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-07-14 14:11:15,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-07-14 14:11:15,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-07-14 14:11:15,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-07-14 14:11:15,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-07-14 14:11:15,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-07-14 14:11:15,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-07-14 14:11:15,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-07-14 14:11:15,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-07-14 14:11:15,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-07-14 14:11:15,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-07-14 14:11:15,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-07-14 14:11:15,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-07-14 14:11:15,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-07-14 14:11:15,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-07-14 14:11:15,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-07-14 14:11:15,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-07-14 14:11:15,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-07-14 14:11:15,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-07-14 14:11:15,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-07-14 14:11:15,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-07-14 14:11:15,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-07-14 14:11:15,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 14:11:16,001 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-07-14 14:11:16,002 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-14 14:11:16,002 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-14 14:11:16,035 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-14 14:11:16,038 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:11:16,038 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 318 transitions, 654 flow [2022-07-14 14:11:16,039 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 318 transitions, 654 flow [2022-07-14 14:11:16,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 275 places, 318 transitions, 654 flow [2022-07-14 14:11:16,108 INFO L129 PetriNetUnfolder]: 82/545 cut-off events. [2022-07-14 14:11:16,109 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-14 14:11:16,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 545 events. 82/545 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2607 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 331. Up to 12 conditions per place. [2022-07-14 14:11:16,146 INFO L116 LiptonReduction]: Number of co-enabled transitions 51004 [2022-07-14 14:11:20,381 INFO L131 LiptonReduction]: Checked pairs total: 87974 [2022-07-14 14:11:20,381 INFO L133 LiptonReduction]: Total number of compositions: 289 [2022-07-14 14:11:20,383 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 95 places, 129 transitions, 276 flow [2022-07-14 14:11:21,119 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21735 states, 21088 states have (on average 4.262993171471927) internal successors, (89898), 21734 states have internal predecessors, (89898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:21,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:11:21,121 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@bdfdf49, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@27e1f26b [2022-07-14 14:11:21,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-07-14 14:11:21,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 21735 states, 21088 states have (on average 4.262993171471927) internal successors, (89898), 21734 states have internal predecessors, (89898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:21,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-07-14 14:11:21,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:21,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-07-14 14:11:21,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-07-14 14:11:21,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:21,183 INFO L85 PathProgramCache]: Analyzing trace with hash 51548, now seen corresponding path program 1 times [2022-07-14 14:11:21,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:21,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756441575] [2022-07-14 14:11:21,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:21,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:21,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:21,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:21,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756441575] [2022-07-14 14:11:21,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756441575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:21,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:11:21,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:11:21,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446617351] [2022-07-14 14:11:21,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:21,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:11:21,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:21,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:11:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:21,278 INFO L87 Difference]: Start difference. First operand has 21735 states, 21088 states have (on average 4.262993171471927) internal successors, (89898), 21734 states have internal predecessors, (89898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:21,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:21,843 INFO L93 Difference]: Finished difference Result 21735 states and 66458 transitions. [2022-07-14 14:11:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:11:21,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-07-14 14:11:21,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:22,073 INFO L225 Difference]: With dead ends: 21735 [2022-07-14 14:11:22,074 INFO L226 Difference]: Without dead ends: 21730 [2022-07-14 14:11:22,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:22,075 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:22,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:22,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21730 states. [2022-07-14 14:11:22,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21730 to 21730. [2022-07-14 14:11:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21730 states, 21088 states have (on average 3.1509863429438543) internal successors, (66448), 21729 states have internal predecessors, (66448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21730 states to 21730 states and 66448 transitions. [2022-07-14 14:11:23,103 INFO L78 Accepts]: Start accepts. Automaton has 21730 states and 66448 transitions. Word has length 2 [2022-07-14 14:11:23,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:23,103 INFO L495 AbstractCegarLoop]: Abstraction has 21730 states and 66448 transitions. [2022-07-14 14:11:23,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:23,104 INFO L276 IsEmpty]: Start isEmpty. Operand 21730 states and 66448 transitions. [2022-07-14 14:11:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 14:11:23,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:23,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 14:11:23,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 14:11:23,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-07-14 14:11:23,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:23,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1600091, now seen corresponding path program 1 times [2022-07-14 14:11:23,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:23,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140371377] [2022-07-14 14:11:23,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:23,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:23,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:23,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140371377] [2022-07-14 14:11:23,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140371377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:23,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:11:23,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:11:23,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341642331] [2022-07-14 14:11:23,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:23,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:11:23,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:23,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:11:23,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:23,131 INFO L87 Difference]: Start difference. First operand 21730 states and 66448 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:23,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:23,494 INFO L93 Difference]: Finished difference Result 21729 states and 66447 transitions. [2022-07-14 14:11:23,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:11:23,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-07-14 14:11:23,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:23,646 INFO L225 Difference]: With dead ends: 21729 [2022-07-14 14:11:23,647 INFO L226 Difference]: Without dead ends: 21729 [2022-07-14 14:11:23,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:23,648 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 95 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 13 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 [2022-07-14 14:11:23,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 13 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:23,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21729 states. [2022-07-14 14:11:24,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21729 to 21729. [2022-07-14 14:11:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21729 states, 21088 states have (on average 3.150938922610015) internal successors, (66447), 21728 states have internal predecessors, (66447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:24,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21729 states to 21729 states and 66447 transitions. [2022-07-14 14:11:24,377 INFO L78 Accepts]: Start accepts. Automaton has 21729 states and 66447 transitions. Word has length 3 [2022-07-14 14:11:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:24,377 INFO L495 AbstractCegarLoop]: Abstraction has 21729 states and 66447 transitions. [2022-07-14 14:11:24,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 21729 states and 66447 transitions. [2022-07-14 14:11:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-14 14:11:24,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:24,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:11:24,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-14 14:11:24,379 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-07-14 14:11:24,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:24,380 INFO L85 PathProgramCache]: Analyzing trace with hash 245520383, now seen corresponding path program 1 times [2022-07-14 14:11:24,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:24,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049193709] [2022-07-14 14:11:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:24,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:24,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:24,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049193709] [2022-07-14 14:11:24,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049193709] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:11:24,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297156594] [2022-07-14 14:11:24,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:24,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:11:24,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:11:24,405 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:11:24,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 14:11:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:24,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:11:24,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:11:24,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:24,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:11:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:24,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297156594] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:11:24,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:11:24,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-07-14 14:11:24,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915751769] [2022-07-14 14:11:24,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:11:24,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 14:11:24,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:24,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 14:11:24,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:11:24,502 INFO L87 Difference]: Start difference. First operand 21729 states and 66447 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:24,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:24,871 INFO L93 Difference]: Finished difference Result 21732 states and 66450 transitions. [2022-07-14 14:11:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:11:24,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-14 14:11:24,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:25,100 INFO L225 Difference]: With dead ends: 21732 [2022-07-14 14:11:25,100 INFO L226 Difference]: Without dead ends: 21732 [2022-07-14 14:11:25,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:11:25,115 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:25,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:25,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21732 states. [2022-07-14 14:11:25,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21732 to 21732. [2022-07-14 14:11:25,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21732 states, 21091 states have (on average 3.150632971409606) internal successors, (66450), 21731 states have internal predecessors, (66450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:26,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21732 states to 21732 states and 66450 transitions. [2022-07-14 14:11:26,018 INFO L78 Accepts]: Start accepts. Automaton has 21732 states and 66450 transitions. Word has length 7 [2022-07-14 14:11:26,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:26,018 INFO L495 AbstractCegarLoop]: Abstraction has 21732 states and 66450 transitions. [2022-07-14 14:11:26,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:26,018 INFO L276 IsEmpty]: Start isEmpty. Operand 21732 states and 66450 transitions. [2022-07-14 14:11:26,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 14:11:26,019 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:26,019 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-07-14 14:11:26,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-14 14:11:26,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:11:26,224 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-07-14 14:11:26,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:26,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1711748672, now seen corresponding path program 2 times [2022-07-14 14:11:26,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:26,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063719313] [2022-07-14 14:11:26,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:26,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-14 14:11:26,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:26,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063719313] [2022-07-14 14:11:26,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063719313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:26,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:11:26,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:11:26,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588020871] [2022-07-14 14:11:26,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:26,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:11:26,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:26,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:11:26,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:26,268 INFO L87 Difference]: Start difference. First operand 21732 states and 66450 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:26,470 INFO L93 Difference]: Finished difference Result 21659 states and 66323 transitions. [2022-07-14 14:11:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:11:26,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-14 14:11:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:26,713 INFO L225 Difference]: With dead ends: 21659 [2022-07-14 14:11:26,721 INFO L226 Difference]: Without dead ends: 21659 [2022-07-14 14:11:26,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:26,724 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:26,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 26 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:26,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21659 states. [2022-07-14 14:11:27,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21659 to 21659. [2022-07-14 14:11:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21659 states, 21038 states have (on average 3.152533510789999) internal successors, (66323), 21658 states have internal predecessors, (66323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:27,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21659 states to 21659 states and 66323 transitions. [2022-07-14 14:11:27,376 INFO L78 Accepts]: Start accepts. Automaton has 21659 states and 66323 transitions. Word has length 10 [2022-07-14 14:11:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:27,376 INFO L495 AbstractCegarLoop]: Abstraction has 21659 states and 66323 transitions. [2022-07-14 14:11:27,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 21659 states and 66323 transitions. [2022-07-14 14:11:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-14 14:11:27,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:27,377 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-14 14:11:27,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-14 14:11:27,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-07-14 14:11:27,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash 244424498, now seen corresponding path program 1 times [2022-07-14 14:11:27,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:27,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260058081] [2022-07-14 14:11:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:27,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 14:11:27,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:27,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260058081] [2022-07-14 14:11:27,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260058081] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:11:27,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693071931] [2022-07-14 14:11:27,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:27,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:11:27,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:11:27,436 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:11:27,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 14:11:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:27,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:11:27,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:11:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 14:11:27,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:11:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 14:11:27,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693071931] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:11:27,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:11:27,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-07-14 14:11:27,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677062346] [2022-07-14 14:11:27,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:11:27,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 14:11:27,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:27,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 14:11:27,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-14 14:11:27,584 INFO L87 Difference]: Start difference. First operand 21659 states and 66323 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:28,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:28,066 INFO L93 Difference]: Finished difference Result 21665 states and 66329 transitions. [2022-07-14 14:11:28,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 14:11:28,067 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-14 14:11:28,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:28,148 INFO L225 Difference]: With dead ends: 21665 [2022-07-14 14:11:28,149 INFO L226 Difference]: Without dead ends: 21665 [2022-07-14 14:11:28,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-14 14:11:28,150 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:28,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:11:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21665 states. [2022-07-14 14:11:28,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21665 to 21665. [2022-07-14 14:11:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21665 states, 21044 states have (on average 3.1519197871127163) internal successors, (66329), 21664 states have internal predecessors, (66329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:28,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21665 states to 21665 states and 66329 transitions. [2022-07-14 14:11:28,741 INFO L78 Accepts]: Start accepts. Automaton has 21665 states and 66329 transitions. Word has length 14 [2022-07-14 14:11:28,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:28,741 INFO L495 AbstractCegarLoop]: Abstraction has 21665 states and 66329 transitions. [2022-07-14 14:11:28,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:28,741 INFO L276 IsEmpty]: Start isEmpty. Operand 21665 states and 66329 transitions. [2022-07-14 14:11:28,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-14 14:11:28,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:28,742 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-14 14:11:28,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 14:11:28,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:11:28,944 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-07-14 14:11:28,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:28,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1891883310, now seen corresponding path program 2 times [2022-07-14 14:11:28,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:28,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620531391] [2022-07-14 14:11:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:28,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:28,986 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-14 14:11:28,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:28,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620531391] [2022-07-14 14:11:28,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620531391] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:11:28,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78116584] [2022-07-14 14:11:28,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:11:28,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:11:28,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:11:28,989 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) [2022-07-14 14:11:28,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-14 14:11:29,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 14:11:29,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:11:29,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:11:29,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:11:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-14 14:11:29,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:11:29,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78116584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:29,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 14:11:29,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-07-14 14:11:29,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422899368] [2022-07-14 14:11:29,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:29,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 14:11:29,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:29,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 14:11:29,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:11:29,100 INFO L87 Difference]: Start difference. First operand 21665 states and 66329 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:29,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:29,412 INFO L93 Difference]: Finished difference Result 21040 states and 64404 transitions. [2022-07-14 14:11:29,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 14:11:29,412 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 20 [2022-07-14 14:11:29,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:29,470 INFO L225 Difference]: With dead ends: 21040 [2022-07-14 14:11:29,470 INFO L226 Difference]: Without dead ends: 21040 [2022-07-14 14:11:29,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:11:29,471 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 177 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:29,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 21 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:29,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21040 states. [2022-07-14 14:11:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21040 to 21040. [2022-07-14 14:11:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21040 states, 20468 states have (on average 3.1465702560093805) internal successors, (64404), 21039 states have internal predecessors, (64404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:30,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21040 states to 21040 states and 64404 transitions. [2022-07-14 14:11:30,001 INFO L78 Accepts]: Start accepts. Automaton has 21040 states and 64404 transitions. Word has length 20 [2022-07-14 14:11:30,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:30,002 INFO L495 AbstractCegarLoop]: Abstraction has 21040 states and 64404 transitions. [2022-07-14 14:11:30,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:30,002 INFO L276 IsEmpty]: Start isEmpty. Operand 21040 states and 64404 transitions. [2022-07-14 14:11:30,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-14 14:11:30,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:30,003 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-14 14:11:30,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-14 14:11:30,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-14 14:11:30,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-07-14 14:11:30,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:30,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1891883309, now seen corresponding path program 1 times [2022-07-14 14:11:30,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:30,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160520133] [2022-07-14 14:11:30,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:30,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-14 14:11:30,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:30,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160520133] [2022-07-14 14:11:30,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160520133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:30,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:11:30,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:11:30,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444724675] [2022-07-14 14:11:30,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:30,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:11:30,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:30,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:11:30,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:30,260 INFO L87 Difference]: Start difference. First operand 21040 states and 64404 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:30,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:30,468 INFO L93 Difference]: Finished difference Result 20415 states and 62479 transitions. [2022-07-14 14:11:30,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:11:30,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-14 14:11:30,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:30,522 INFO L225 Difference]: With dead ends: 20415 [2022-07-14 14:11:30,522 INFO L226 Difference]: Without dead ends: 20415 [2022-07-14 14:11:30,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:30,523 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 54 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:30,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 24 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:30,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20415 states. [2022-07-14 14:11:31,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20415 to 20415. [2022-07-14 14:11:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20415 states, 19892 states have (on average 3.140910918962397) internal successors, (62479), 20414 states have internal predecessors, (62479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20415 states to 20415 states and 62479 transitions. [2022-07-14 14:11:31,111 INFO L78 Accepts]: Start accepts. Automaton has 20415 states and 62479 transitions. Word has length 20 [2022-07-14 14:11:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:31,111 INFO L495 AbstractCegarLoop]: Abstraction has 20415 states and 62479 transitions. [2022-07-14 14:11:31,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand 20415 states and 62479 transitions. [2022-07-14 14:11:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-14 14:11:31,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:31,113 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:11:31,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-14 14:11:31,113 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-07-14 14:11:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash -468389981, now seen corresponding path program 1 times [2022-07-14 14:11:31,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:31,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851368181] [2022-07-14 14:11:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:31,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-14 14:11:31,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:31,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851368181] [2022-07-14 14:11:31,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851368181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:31,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:11:31,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 14:11:31,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691419142] [2022-07-14 14:11:31,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:31,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 14:11:31,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:31,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 14:11:31,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:11:31,264 INFO L87 Difference]: Start difference. First operand 20415 states and 62479 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:31,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:31,892 INFO L93 Difference]: Finished difference Result 39157 states and 120031 transitions. [2022-07-14 14:11:31,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:11:31,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-14 14:11:31,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:32,279 INFO L225 Difference]: With dead ends: 39157 [2022-07-14 14:11:32,279 INFO L226 Difference]: Without dead ends: 39157 [2022-07-14 14:11:32,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-14 14:11:32,280 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 345 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:32,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 88 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 14:11:32,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39157 states. [2022-07-14 14:11:33,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39157 to 25392. [2022-07-14 14:11:33,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25392 states, 24869 states have (on average 3.2046724838151914) internal successors, (79697), 25391 states have internal predecessors, (79697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25392 states to 25392 states and 79697 transitions. [2022-07-14 14:11:33,145 INFO L78 Accepts]: Start accepts. Automaton has 25392 states and 79697 transitions. Word has length 20 [2022-07-14 14:11:33,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:33,145 INFO L495 AbstractCegarLoop]: Abstraction has 25392 states and 79697 transitions. [2022-07-14 14:11:33,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand 25392 states and 79697 transitions. [2022-07-14 14:11:33,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-14 14:11:33,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:33,147 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:11:33,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-14 14:11:33,147 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-07-14 14:11:33,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:33,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1328562742, now seen corresponding path program 1 times [2022-07-14 14:11:33,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:33,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243051744] [2022-07-14 14:11:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:33,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:11:33,168 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:11:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:11:33,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:11:33,183 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 14:11:33,183 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-07-14 14:11:33,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2022-07-14 14:11:33,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2022-07-14 14:11:33,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2022-07-14 14:11:33,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2022-07-14 14:11:33,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2022-07-14 14:11:33,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2022-07-14 14:11:33,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2022-07-14 14:11:33,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2022-07-14 14:11:33,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2022-07-14 14:11:33,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2022-07-14 14:11:33,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2022-07-14 14:11:33,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2022-07-14 14:11:33,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2022-07-14 14:11:33,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2022-07-14 14:11:33,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2022-07-14 14:11:33,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2022-07-14 14:11:33,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2022-07-14 14:11:33,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2022-07-14 14:11:33,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2022-07-14 14:11:33,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2022-07-14 14:11:33,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2022-07-14 14:11:33,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2022-07-14 14:11:33,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2022-07-14 14:11:33,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2022-07-14 14:11:33,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2022-07-14 14:11:33,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2022-07-14 14:11:33,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2022-07-14 14:11:33,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2022-07-14 14:11:33,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2022-07-14 14:11:33,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2022-07-14 14:11:33,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-14 14:11:33,188 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:11:33,188 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-14 14:11:33,189 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-14 14:11:33,220 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-14 14:11:33,223 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:11:33,224 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 346 places, 402 transitions, 834 flow [2022-07-14 14:11:33,224 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 346 places, 402 transitions, 834 flow [2022-07-14 14:11:33,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 346 places, 402 transitions, 834 flow [2022-07-14 14:11:33,350 INFO L129 PetriNetUnfolder]: 120/802 cut-off events. [2022-07-14 14:11:33,350 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-07-14 14:11:33,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 802 events. 120/802 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4142 event pairs, 1 based on Foata normal form. 0/614 useless extension candidates. Maximal degree in co-relation 553. Up to 16 conditions per place. [2022-07-14 14:11:33,416 INFO L116 LiptonReduction]: Number of co-enabled transitions 97416 [2022-07-14 14:11:38,414 INFO L131 LiptonReduction]: Checked pairs total: 174987 [2022-07-14 14:11:38,414 INFO L133 LiptonReduction]: Total number of compositions: 348 [2022-07-14 14:11:38,415 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 124 places, 172 transitions, 374 flow [2022-07-14 14:11:57,588 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 586043 states, 581308 states have (on average 5.688953188327014) internal successors, (3307034), 586042 states have internal predecessors, (3307034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:57,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:11:57,590 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@bdfdf49, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@27e1f26b [2022-07-14 14:11:57,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-07-14 14:12:00,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 586043 states, 581308 states have (on average 5.688953188327014) internal successors, (3307034), 586042 states have internal predecessors, (3307034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:12:00,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-07-14 14:12:00,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:12:00,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-07-14 14:12:00,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-07-14 14:12:00,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:12:00,455 INFO L85 PathProgramCache]: Analyzing trace with hash 78241, now seen corresponding path program 1 times [2022-07-14 14:12:00,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:12:00,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497443892] [2022-07-14 14:12:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:12:00,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:12:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:12:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:12:00,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:12:00,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497443892] [2022-07-14 14:12:00,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497443892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:12:00,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:12:00,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:12:00,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281804271] [2022-07-14 14:12:00,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:12:00,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-14 14:12:00,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:12:00,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-14 14:12:00,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 14:12:01,824 INFO L87 Difference]: Start difference. First operand has 586043 states, 581308 states have (on average 5.688953188327014) internal successors, (3307034), 586042 states have internal predecessors, (3307034), 0 states have call successors, (0), 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 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)