./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.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_07-cond_racing2.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 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:08:54,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:08:54,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:08:54,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:08:54,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:08:54,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:08:54,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:08:54,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:08:54,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:08:54,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:08:54,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:08:54,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:08:54,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:08:54,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:08:54,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:08:54,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:08:54,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:08:54,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:08:54,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:08:54,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:08:54,418 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:08:54,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:08:54,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:08:54,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:08:54,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:08:54,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:08:54,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:08:54,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:08:54,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:08:54,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:08:54,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:08:54,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:08:54,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:08:54,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:08:54,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:08:54,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:08:54,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:08:54,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:08:54,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:08:54,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:08:54,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:08:54,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:08:54,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-14 14:08:54,466 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:08:54,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:08:54,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:08:54,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:08:54,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 14:08:54,468 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 14:08:54,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:08:54,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:08:54,468 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:08:54,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:08:54,469 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 14:08:54,470 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:08:54,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:08:54,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 14:08:54,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:08:54,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 14:08:54,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 14:08:54,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 14:08:54,471 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 14:08:54,472 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 14:08:54,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:08:54,472 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:08:54,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 14:08:54,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:08:54,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:08:54,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 14:08:54,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:08:54,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:08:54,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 14:08:54,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 14:08:54,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:08:54,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 14:08:54,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 14:08:54,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2022-07-14 14:08:54,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:08:54,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:08:54,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:08:54,745 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:08:54,746 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:08:54,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-07-14 14:08:54,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b8c5e027/a4675620f42346dab152809d520d0423/FLAG6adf2e60f [2022-07-14 14:08:55,351 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:08:55,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-07-14 14:08:55,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b8c5e027/a4675620f42346dab152809d520d0423/FLAG6adf2e60f [2022-07-14 14:08:55,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b8c5e027/a4675620f42346dab152809d520d0423 [2022-07-14 14:08:55,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:08:55,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:08:55,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:08:55,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:08:55,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:08:55,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:08:55" (1/1) ... [2022-07-14 14:08:55,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@365c15a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:08:55, skipping insertion in model container [2022-07-14 14:08:55,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:08:55" (1/1) ... [2022-07-14 14:08:55,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:08:55,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:08:56,273 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_07-cond_racing2.i[41322,41335] [2022-07-14 14:08:56,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:08:56,305 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:08:56,349 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_07-cond_racing2.i[41322,41335] [2022-07-14 14:08:56,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:08:56,423 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:08:56,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:08:56 WrapperNode [2022-07-14 14:08:56,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:08:56,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:08:56,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:08:56,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:08:56,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:08:56" (1/1) ... [2022-07-14 14:08:56,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:08:56" (1/1) ... [2022-07-14 14:08:56,492 INFO L137 Inliner]: procedures = 270, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2022-07-14 14:08:56,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:08:56,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:08:56,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:08:56,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:08:56,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:08:56" (1/1) ... [2022-07-14 14:08:56,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:08:56" (1/1) ... [2022-07-14 14:08:56,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:08:56" (1/1) ... [2022-07-14 14:08:56,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:08:56" (1/1) ... [2022-07-14 14:08:56,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:08:56" (1/1) ... [2022-07-14 14:08:56,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:08:56" (1/1) ... [2022-07-14 14:08:56,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:08:56" (1/1) ... [2022-07-14 14:08:56,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:08:56,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:08:56,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:08:56,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:08:56,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:08:56" (1/1) ... [2022-07-14 14:08:56,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:08:56,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:08:56,580 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 14:08:56,604 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 14:08:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 14:08:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 14:08:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 14:08:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 14:08:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-14 14:08:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 14:08:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-14 14:08:56,620 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-14 14:08:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 14:08:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:08:56,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:08:56,621 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 14:08:56,788 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:08:56,790 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:08:57,012 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:08:57,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:08:57,019 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-14 14:08:57,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:08:57 BoogieIcfgContainer [2022-07-14 14:08:57,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:08:57,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 14:08:57,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 14:08:57,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 14:08:57,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 02:08:55" (1/3) ... [2022-07-14 14:08:57,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbf9ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:08:57, skipping insertion in model container [2022-07-14 14:08:57,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:08:56" (2/3) ... [2022-07-14 14:08:57,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbf9ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:08:57, skipping insertion in model container [2022-07-14 14:08:57,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:08:57" (3/3) ... [2022-07-14 14:08:57,028 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2022-07-14 14:08:57,032 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-14 14:08:57,042 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 14:08:57,043 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-07-14 14:08:57,043 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-14 14:08:57,083 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-14 14:08:57,110 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:08:57,125 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 148 transitions, 304 flow [2022-07-14 14:08:57,128 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 148 transitions, 304 flow [2022-07-14 14:08:57,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 136 places, 148 transitions, 304 flow [2022-07-14 14:08:57,200 INFO L129 PetriNetUnfolder]: 23/196 cut-off events. [2022-07-14 14:08:57,201 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-14 14:08:57,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 196 events. 23/196 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 463 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 93. Up to 6 conditions per place. [2022-07-14 14:08:57,212 INFO L116 LiptonReduction]: Number of co-enabled transitions 4176 [2022-07-14 14:09:01,448 INFO L131 LiptonReduction]: Checked pairs total: 6820 [2022-07-14 14:09:01,449 INFO L133 LiptonReduction]: Total number of compositions: 149 [2022-07-14 14:09:01,456 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 42 transitions, 92 flow [2022-07-14 14:09:01,494 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 224 states, 185 states have (on average 2.924324324324324) internal successors, (541), 223 states have internal predecessors, (541), 0 states have call successors, (0), 0 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 14:09:01,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:09:01,512 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@3721826, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31664e6c [2022-07-14 14:09:01,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-07-14 14:09:01,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 185 states have (on average 2.924324324324324) internal successors, (541), 223 states have internal predecessors, (541), 0 states have call successors, (0), 0 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 14:09:01,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-07-14 14:09:01,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:01,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-07-14 14:09:01,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-07-14 14:09:01,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:01,523 INFO L85 PathProgramCache]: Analyzing trace with hash 18455, now seen corresponding path program 1 times [2022-07-14 14:09:01,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:01,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461092484] [2022-07-14 14:09:01,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:01,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:01,718 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 14:09:01,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:01,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461092484] [2022-07-14 14:09:01,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461092484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:01,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:01,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:09:01,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447281924] [2022-07-14 14:09:01,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:01,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:01,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:01,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:01,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:01,753 INFO L87 Difference]: Start difference. First operand has 224 states, 185 states have (on average 2.924324324324324) internal successors, (541), 223 states have internal predecessors, (541), 0 states have call successors, (0), 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 14:09:01,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:01,829 INFO L93 Difference]: Finished difference Result 209 states and 393 transitions. [2022-07-14 14:09:01,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:01,831 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 14:09:01,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:01,844 INFO L225 Difference]: With dead ends: 209 [2022-07-14 14:09:01,845 INFO L226 Difference]: Without dead ends: 199 [2022-07-14 14:09:01,846 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 14:09:01,850 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:01,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:09:01,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-14 14:09:01,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-07-14 14:09:01,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 168 states have (on average 2.244047619047619) internal successors, (377), 198 states have internal predecessors, (377), 0 states have call successors, (0), 0 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 14:09:01,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 377 transitions. [2022-07-14 14:09:01,912 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 377 transitions. Word has length 2 [2022-07-14 14:09:01,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:01,915 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 377 transitions. [2022-07-14 14:09:01,915 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 14:09:01,915 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 377 transitions. [2022-07-14 14:09:01,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-07-14 14:09:01,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:01,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-07-14 14:09:01,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 14:09:01,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-07-14 14:09:01,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:01,918 INFO L85 PathProgramCache]: Analyzing trace with hash 18456, now seen corresponding path program 1 times [2022-07-14 14:09:01,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:01,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188457589] [2022-07-14 14:09:01,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:01,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:01,982 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 14:09:01,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:01,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188457589] [2022-07-14 14:09:01,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188457589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:01,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:01,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:09:01,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780085461] [2022-07-14 14:09:01,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:01,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:01,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:01,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:01,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:01,990 INFO L87 Difference]: Start difference. First operand 199 states and 377 transitions. 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 14:09:02,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:02,045 INFO L93 Difference]: Finished difference Result 170 states and 322 transitions. [2022-07-14 14:09:02,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:02,046 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 14:09:02,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:02,048 INFO L225 Difference]: With dead ends: 170 [2022-07-14 14:09:02,049 INFO L226 Difference]: Without dead ends: 170 [2022-07-14 14:09:02,050 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 14:09:02,056 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:02,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:09:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-14 14:09:02,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-07-14 14:09:02,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 150 states have (on average 2.1466666666666665) internal successors, (322), 169 states have internal predecessors, (322), 0 states have call successors, (0), 0 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 14:09:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 322 transitions. [2022-07-14 14:09:02,070 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 322 transitions. Word has length 2 [2022-07-14 14:09:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:02,071 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 322 transitions. [2022-07-14 14:09:02,071 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 14:09:02,071 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 322 transitions. [2022-07-14 14:09:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 14:09:02,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:02,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 14:09:02,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 14:09:02,074 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-07-14 14:09:02,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:02,075 INFO L85 PathProgramCache]: Analyzing trace with hash 549267993, now seen corresponding path program 1 times [2022-07-14 14:09:02,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:02,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747444003] [2022-07-14 14:09:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:02,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:02,153 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 14:09:02,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:02,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747444003] [2022-07-14 14:09:02,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747444003] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:09:02,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345098805] [2022-07-14 14:09:02,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:02,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:09:02,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:09:02,160 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 14:09:02,162 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 14:09:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:02,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:09:02,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:09:02,269 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 14:09:02,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:09:02,285 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 14:09:02,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345098805] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:09:02,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:09:02,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-07-14 14:09:02,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157394099] [2022-07-14 14:09:02,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:09:02,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 14:09:02,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:02,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 14:09:02,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:09:02,288 INFO L87 Difference]: Start difference. First operand 170 states and 322 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:02,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:02,334 INFO L93 Difference]: Finished difference Result 59 states and 97 transitions. [2022-07-14 14:09:02,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 14:09:02,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 14:09:02,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:02,335 INFO L225 Difference]: With dead ends: 59 [2022-07-14 14:09:02,336 INFO L226 Difference]: Without dead ends: 59 [2022-07-14 14:09:02,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 14:09:02,337 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 60 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:02,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 6 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:09:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-14 14:09:02,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-07-14 14:09:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.7962962962962963) internal successors, (97), 58 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 14:09:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 97 transitions. [2022-07-14 14:09:02,340 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 97 transitions. Word has length 5 [2022-07-14 14:09:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:02,341 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 97 transitions. [2022-07-14 14:09:02,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 97 transitions. [2022-07-14 14:09:02,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 14:09:02,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:02,342 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-07-14 14:09:02,365 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 14:09:02,564 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 14:09:02,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2022-07-14 14:09:02,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:02,565 INFO L85 PathProgramCache]: Analyzing trace with hash -152561997, now seen corresponding path program 1 times [2022-07-14 14:09:02,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:02,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030600948] [2022-07-14 14:09:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:02,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:09:02,597 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:09:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:09:02,621 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:09:02,621 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 14:09:02,622 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-07-14 14:09:02,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2022-07-14 14:09:02,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2022-07-14 14:09:02,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2022-07-14 14:09:02,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2022-07-14 14:09:02,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2022-07-14 14:09:02,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2022-07-14 14:09:02,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2022-07-14 14:09:02,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2022-07-14 14:09:02,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2022-07-14 14:09:02,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2022-07-14 14:09:02,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2022-07-14 14:09:02,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2022-07-14 14:09:02,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2022-07-14 14:09:02,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2022-07-14 14:09:02,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 14:09:02,628 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-14 14:09:02,629 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-14 14:09:02,630 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-14 14:09:02,644 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-14 14:09:02,647 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:09:02,647 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 186 transitions, 390 flow [2022-07-14 14:09:02,648 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 186 transitions, 390 flow [2022-07-14 14:09:02,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 169 places, 186 transitions, 390 flow [2022-07-14 14:09:02,690 INFO L129 PetriNetUnfolder]: 40/319 cut-off events. [2022-07-14 14:09:02,690 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-14 14:09:02,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 40/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 966 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 198. Up to 9 conditions per place. [2022-07-14 14:09:02,703 INFO L116 LiptonReduction]: Number of co-enabled transitions 12312 [2022-07-14 14:09:07,010 INFO L131 LiptonReduction]: Checked pairs total: 28040 [2022-07-14 14:09:07,010 INFO L133 LiptonReduction]: Total number of compositions: 177 [2022-07-14 14:09:07,011 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 70 transitions, 158 flow [2022-07-14 14:09:07,166 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4800 states, 4571 states have (on average 3.8004812951214175) internal successors, (17372), 4799 states have internal predecessors, (17372), 0 states have call successors, (0), 0 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 14:09:07,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:09:07,168 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@3721826, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31664e6c [2022-07-14 14:09:07,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-07-14 14:09:07,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 4800 states, 4571 states have (on average 3.8004812951214175) internal successors, (17372), 4799 states have internal predecessors, (17372), 0 states have call successors, (0), 0 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 14:09:07,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-07-14 14:09:07,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:07,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-07-14 14:09:07,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:09:07,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash 31281, now seen corresponding path program 1 times [2022-07-14 14:09:07,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:07,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041840222] [2022-07-14 14:09:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:07,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:07,218 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 14:09:07,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:07,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041840222] [2022-07-14 14:09:07,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041840222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:07,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:07,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:09:07,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188116003] [2022-07-14 14:09:07,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:07,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:07,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:07,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:07,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:07,269 INFO L87 Difference]: Start difference. First operand has 4800 states, 4571 states have (on average 3.8004812951214175) internal successors, (17372), 4799 states have internal predecessors, (17372), 0 states have call successors, (0), 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 14:09:07,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:07,362 INFO L93 Difference]: Finished difference Result 4527 states and 12632 transitions. [2022-07-14 14:09:07,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:07,363 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 14:09:07,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:07,395 INFO L225 Difference]: With dead ends: 4527 [2022-07-14 14:09:07,396 INFO L226 Difference]: Without dead ends: 4496 [2022-07-14 14:09:07,396 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 14:09:07,397 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:07,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 10 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:09:07,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2022-07-14 14:09:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4496. [2022-07-14 14:09:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4496 states, 4302 states have (on average 2.919339841933984) internal successors, (12559), 4495 states have internal predecessors, (12559), 0 states have call successors, (0), 0 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 14:09:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4496 states to 4496 states and 12559 transitions. [2022-07-14 14:09:07,585 INFO L78 Accepts]: Start accepts. Automaton has 4496 states and 12559 transitions. Word has length 2 [2022-07-14 14:09:07,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:07,585 INFO L495 AbstractCegarLoop]: Abstraction has 4496 states and 12559 transitions. [2022-07-14 14:09:07,586 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 14:09:07,586 INFO L276 IsEmpty]: Start isEmpty. Operand 4496 states and 12559 transitions. [2022-07-14 14:09:07,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-07-14 14:09:07,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:07,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-07-14 14:09:07,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 14:09:07,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:09:07,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:07,588 INFO L85 PathProgramCache]: Analyzing trace with hash 31283, now seen corresponding path program 1 times [2022-07-14 14:09:07,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:07,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087638829] [2022-07-14 14:09:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:07,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:07,602 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 14:09:07,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:07,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087638829] [2022-07-14 14:09:07,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087638829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:07,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:07,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:09:07,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801068435] [2022-07-14 14:09:07,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:07,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:07,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:07,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:07,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:07,604 INFO L87 Difference]: Start difference. First operand 4496 states and 12559 transitions. 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 14:09:07,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:07,699 INFO L93 Difference]: Finished difference Result 4463 states and 12496 transitions. [2022-07-14 14:09:07,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:07,699 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 14:09:07,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:07,723 INFO L225 Difference]: With dead ends: 4463 [2022-07-14 14:09:07,724 INFO L226 Difference]: Without dead ends: 4463 [2022-07-14 14:09:07,724 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 14:09:07,725 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:07,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 20 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:07,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2022-07-14 14:09:07,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 4463. [2022-07-14 14:09:07,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 4280 states have (on average 2.919626168224299) internal successors, (12496), 4462 states have internal predecessors, (12496), 0 states have call successors, (0), 0 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 14:09:07,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 12496 transitions. [2022-07-14 14:09:07,881 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 12496 transitions. Word has length 2 [2022-07-14 14:09:07,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:07,881 INFO L495 AbstractCegarLoop]: Abstraction has 4463 states and 12496 transitions. [2022-07-14 14:09:07,881 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 14:09:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 12496 transitions. [2022-07-14 14:09:07,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 14:09:07,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:07,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-14 14:09:07,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 14:09:07,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:09:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:07,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1200381231, now seen corresponding path program 1 times [2022-07-14 14:09:07,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:07,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116488892] [2022-07-14 14:09:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:07,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:07,914 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 14:09:07,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:07,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116488892] [2022-07-14 14:09:07,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116488892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:07,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:07,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:09:07,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439774284] [2022-07-14 14:09:07,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:07,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:07,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:07,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:07,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:07,917 INFO L87 Difference]: Start difference. First operand 4463 states and 12496 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 14:09:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:08,052 INFO L93 Difference]: Finished difference Result 5316 states and 13887 transitions. [2022-07-14 14:09:08,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:08,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-14 14:09:08,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:08,126 INFO L225 Difference]: With dead ends: 5316 [2022-07-14 14:09:08,129 INFO L226 Difference]: Without dead ends: 5292 [2022-07-14 14:09:08,130 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 14:09:08,131 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:08,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 17 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:08,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2022-07-14 14:09:08,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 4814. [2022-07-14 14:09:08,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4814 states, 4657 states have (on average 2.8056688855486365) internal successors, (13066), 4813 states have internal predecessors, (13066), 0 states have call successors, (0), 0 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 14:09:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4814 states to 4814 states and 13066 transitions. [2022-07-14 14:09:08,282 INFO L78 Accepts]: Start accepts. Automaton has 4814 states and 13066 transitions. Word has length 6 [2022-07-14 14:09:08,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:08,282 INFO L495 AbstractCegarLoop]: Abstraction has 4814 states and 13066 transitions. [2022-07-14 14:09:08,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 14:09:08,283 INFO L276 IsEmpty]: Start isEmpty. Operand 4814 states and 13066 transitions. [2022-07-14 14:09:08,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 14:09:08,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:08,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-14 14:09:08,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 14:09:08,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:09:08,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:08,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1200630768, now seen corresponding path program 1 times [2022-07-14 14:09:08,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:08,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667595404] [2022-07-14 14:09:08,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:08,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:08,310 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 14:09:08,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:08,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667595404] [2022-07-14 14:09:08,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667595404] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:09:08,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937813338] [2022-07-14 14:09:08,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:08,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:09:08,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:09:08,312 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 14:09:08,336 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 14:09:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:08,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:09:08,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:09:08,394 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 14:09:08,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:09:08,411 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 14:09:08,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937813338] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:09:08,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:09:08,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-07-14 14:09:08,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821151677] [2022-07-14 14:09:08,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:09:08,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 14:09:08,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:08,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 14:09:08,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:09:08,416 INFO L87 Difference]: Start difference. First operand 4814 states and 13066 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 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 14:09:08,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:08,536 INFO L93 Difference]: Finished difference Result 1451 states and 3863 transitions. [2022-07-14 14:09:08,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:09:08,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 14:09:08,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:08,543 INFO L225 Difference]: With dead ends: 1451 [2022-07-14 14:09:08,543 INFO L226 Difference]: Without dead ends: 1451 [2022-07-14 14:09:08,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 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 14:09:08,545 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 251 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:08,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 38 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:08,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2022-07-14 14:09:08,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1451. [2022-07-14 14:09:08,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1409 states have (on average 2.7416607523066006) internal successors, (3863), 1450 states have internal predecessors, (3863), 0 states have call successors, (0), 0 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 14:09:08,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 3863 transitions. [2022-07-14 14:09:08,623 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 3863 transitions. Word has length 6 [2022-07-14 14:09:08,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:08,623 INFO L495 AbstractCegarLoop]: Abstraction has 1451 states and 3863 transitions. [2022-07-14 14:09:08,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 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 14:09:08,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 3863 transitions. [2022-07-14 14:09:08,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:09:08,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:08,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:09:08,717 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 14:09:08,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-14 14:09:08,825 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:09:08,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:08,825 INFO L85 PathProgramCache]: Analyzing trace with hash 495581956, now seen corresponding path program 1 times [2022-07-14 14:09:08,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:08,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666937513] [2022-07-14 14:09:08,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:08,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:08,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:08,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666937513] [2022-07-14 14:09:08,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666937513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:08,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:08,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:09:08,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023216177] [2022-07-14 14:09:08,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:08,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:08,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:08,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:08,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:08,856 INFO L87 Difference]: Start difference. First operand 1451 states and 3863 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:08,889 INFO L93 Difference]: Finished difference Result 1219 states and 3199 transitions. [2022-07-14 14:09:08,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:08,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-14 14:09:08,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:08,902 INFO L225 Difference]: With dead ends: 1219 [2022-07-14 14:09:08,902 INFO L226 Difference]: Without dead ends: 1219 [2022-07-14 14:09:08,903 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 14:09:08,904 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:08,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 8 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:09:08,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-07-14 14:09:08,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1219. [2022-07-14 14:09:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1198 states have (on average 2.6702838063439067) internal successors, (3199), 1218 states have internal predecessors, (3199), 0 states have call successors, (0), 0 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 14:09:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 3199 transitions. [2022-07-14 14:09:08,929 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 3199 transitions. Word has length 9 [2022-07-14 14:09:08,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:08,929 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 3199 transitions. [2022-07-14 14:09:08,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 3199 transitions. [2022-07-14 14:09:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 14:09:08,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:08,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:08,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-14 14:09:08,933 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:09:08,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:08,934 INFO L85 PathProgramCache]: Analyzing trace with hash 919684167, now seen corresponding path program 1 times [2022-07-14 14:09:08,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:08,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126837812] [2022-07-14 14:09:08,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:08,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:09,001 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 14:09:09,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:09,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126837812] [2022-07-14 14:09:09,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126837812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:09,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:09,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:09:09,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802314964] [2022-07-14 14:09:09,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:09,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:09:09,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:09,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:09:09,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:09:09,005 INFO L87 Difference]: Start difference. First operand 1219 states and 3199 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 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 14:09:09,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:09,149 INFO L93 Difference]: Finished difference Result 1515 states and 3901 transitions. [2022-07-14 14:09:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:09:09,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 14:09:09,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:09,154 INFO L225 Difference]: With dead ends: 1515 [2022-07-14 14:09:09,154 INFO L226 Difference]: Without dead ends: 1515 [2022-07-14 14:09:09,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:09:09,155 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 91 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:09,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 28 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:09,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-07-14 14:09:09,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1335. [2022-07-14 14:09:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1317 states have (on average 2.662870159453303) internal successors, (3507), 1334 states have internal predecessors, (3507), 0 states have call successors, (0), 0 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 14:09:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 3507 transitions. [2022-07-14 14:09:09,186 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 3507 transitions. Word has length 10 [2022-07-14 14:09:09,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:09,186 INFO L495 AbstractCegarLoop]: Abstraction has 1335 states and 3507 transitions. [2022-07-14 14:09:09,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 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 14:09:09,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 3507 transitions. [2022-07-14 14:09:09,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:09:09,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:09,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:09,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-14 14:09:09,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:09:09,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:09,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1554567568, now seen corresponding path program 1 times [2022-07-14 14:09:09,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:09,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142102718] [2022-07-14 14:09:09,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:09,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:09,225 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 14:09:09,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:09,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142102718] [2022-07-14 14:09:09,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142102718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:09,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:09,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:09:09,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672638953] [2022-07-14 14:09:09,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:09,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:09:09,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:09,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:09:09,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:09:09,229 INFO L87 Difference]: Start difference. First operand 1335 states and 3507 transitions. Second operand has 5 states, 4 states have (on average 2.75) 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 14:09:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:09,373 INFO L93 Difference]: Finished difference Result 1426 states and 3630 transitions. [2022-07-14 14:09:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:09:09,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-14 14:09:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:09,377 INFO L225 Difference]: With dead ends: 1426 [2022-07-14 14:09:09,377 INFO L226 Difference]: Without dead ends: 1426 [2022-07-14 14:09:09,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:09:09,378 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 72 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:09,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 38 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:09,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2022-07-14 14:09:09,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1306. [2022-07-14 14:09:09,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1291 states have (on average 2.6134779240898527) internal successors, (3374), 1305 states have internal predecessors, (3374), 0 states have call successors, (0), 0 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 14:09:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 3374 transitions. [2022-07-14 14:09:09,407 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 3374 transitions. Word has length 11 [2022-07-14 14:09:09,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:09,407 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 3374 transitions. [2022-07-14 14:09:09,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) 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 14:09:09,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 3374 transitions. [2022-07-14 14:09:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:09:09,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:09,408 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-07-14 14:09:09,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-14 14:09:09,409 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-07-14 14:09:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash -487060951, now seen corresponding path program 1 times [2022-07-14 14:09:09,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:09,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458016344] [2022-07-14 14:09:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:09,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:09:09,421 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:09:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:09:09,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:09:09,439 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 14:09:09,439 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-07-14 14:09:09,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-07-14 14:09:09,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-07-14 14:09:09,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-07-14 14:09:09,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-07-14 14:09:09,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-07-14 14:09:09,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-07-14 14:09:09,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-07-14 14:09:09,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-07-14 14:09:09,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-07-14 14:09:09,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-07-14 14:09:09,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-07-14 14:09:09,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-07-14 14:09:09,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-07-14 14:09:09,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-07-14 14:09:09,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-07-14 14:09:09,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-07-14 14:09:09,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-07-14 14:09:09,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-07-14 14:09:09,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-14 14:09:09,444 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:09,444 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-14 14:09:09,444 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-14 14:09:09,472 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-14 14:09:09,475 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:09:09,475 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 224 transitions, 478 flow [2022-07-14 14:09:09,476 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 224 transitions, 478 flow [2022-07-14 14:09:09,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 202 places, 224 transitions, 478 flow [2022-07-14 14:09:09,556 INFO L129 PetriNetUnfolder]: 62/483 cut-off events. [2022-07-14 14:09:09,557 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-07-14 14:09:09,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 483 events. 62/483 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1662 event pairs, 1 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 327. Up to 16 conditions per place. [2022-07-14 14:09:09,584 INFO L116 LiptonReduction]: Number of co-enabled transitions 22680 [2022-07-14 14:09:14,005 INFO L131 LiptonReduction]: Checked pairs total: 53847 [2022-07-14 14:09:14,005 INFO L133 LiptonReduction]: Total number of compositions: 204 [2022-07-14 14:09:14,006 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 93 transitions, 216 flow [2022-07-14 14:09:16,528 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 78896 states, 77627 states have (on average 4.972084455150914) internal successors, (385968), 78895 states have internal predecessors, (385968), 0 states have call successors, (0), 0 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 14:09:16,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:09:16,529 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@3721826, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31664e6c [2022-07-14 14:09:16,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-07-14 14:09:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 78896 states, 77627 states have (on average 4.972084455150914) internal successors, (385968), 78895 states have internal predecessors, (385968), 0 states have call successors, (0), 0 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 14:09:16,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-07-14 14:09:16,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:16,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-07-14 14:09:16,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-07-14 14:09:16,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:16,678 INFO L85 PathProgramCache]: Analyzing trace with hash 46190, now seen corresponding path program 1 times [2022-07-14 14:09:16,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:16,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811725819] [2022-07-14 14:09:16,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:16,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:16,693 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 14:09:16,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:16,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811725819] [2022-07-14 14:09:16,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811725819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:16,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:16,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:09:16,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619914998] [2022-07-14 14:09:16,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:16,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:16,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:16,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:16,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:16,848 INFO L87 Difference]: Start difference. First operand has 78896 states, 77627 states have (on average 4.972084455150914) internal successors, (385968), 78895 states have internal predecessors, (385968), 0 states have call successors, (0), 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 14:09:18,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:18,066 INFO L93 Difference]: Finished difference Result 74527 states and 275778 transitions. [2022-07-14 14:09:18,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:18,067 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 14:09:18,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:18,931 INFO L225 Difference]: With dead ends: 74527 [2022-07-14 14:09:18,932 INFO L226 Difference]: Without dead ends: 74396 [2022-07-14 14:09:18,932 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 14:09:18,933 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:18,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 11 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:19,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74396 states. [2022-07-14 14:09:21,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74396 to 74396. [2022-07-14 14:09:21,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74396 states, 73291 states have (on average 3.7568732859423393) internal successors, (275345), 74395 states have internal predecessors, (275345), 0 states have call successors, (0), 0 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 14:09:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74396 states to 74396 states and 275345 transitions. [2022-07-14 14:09:22,178 INFO L78 Accepts]: Start accepts. Automaton has 74396 states and 275345 transitions. Word has length 2 [2022-07-14 14:09:22,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:22,178 INFO L495 AbstractCegarLoop]: Abstraction has 74396 states and 275345 transitions. [2022-07-14 14:09:22,179 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 14:09:22,179 INFO L276 IsEmpty]: Start isEmpty. Operand 74396 states and 275345 transitions. [2022-07-14 14:09:22,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-07-14 14:09:22,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:22,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-07-14 14:09:22,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-14 14:09:22,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-07-14 14:09:22,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:22,180 INFO L85 PathProgramCache]: Analyzing trace with hash 46191, now seen corresponding path program 1 times [2022-07-14 14:09:22,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:22,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427825602] [2022-07-14 14:09:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:22,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:22,209 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 14:09:22,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:22,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427825602] [2022-07-14 14:09:22,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427825602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:22,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:22,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:09:22,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447379346] [2022-07-14 14:09:22,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:22,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:22,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:22,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:22,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:22,213 INFO L87 Difference]: Start difference. First operand 74396 states and 275345 transitions. 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 14:09:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:23,162 INFO L93 Difference]: Finished difference Result 74363 states and 275282 transitions. [2022-07-14 14:09:23,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:23,162 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 14:09:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:23,640 INFO L225 Difference]: With dead ends: 74363 [2022-07-14 14:09:23,640 INFO L226 Difference]: Without dead ends: 74363 [2022-07-14 14:09:23,640 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 14:09:23,641 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:23,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 22 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74363 states. [2022-07-14 14:09:25,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74363 to 74363. [2022-07-14 14:09:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74363 states, 73269 states have (on average 3.757141492309162) internal successors, (275282), 74362 states have internal predecessors, (275282), 0 states have call successors, (0), 0 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 14:09:26,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74363 states to 74363 states and 275282 transitions. [2022-07-14 14:09:26,572 INFO L78 Accepts]: Start accepts. Automaton has 74363 states and 275282 transitions. Word has length 2 [2022-07-14 14:09:26,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:26,573 INFO L495 AbstractCegarLoop]: Abstraction has 74363 states and 275282 transitions. [2022-07-14 14:09:26,573 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 14:09:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand 74363 states and 275282 transitions. [2022-07-14 14:09:26,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 14:09:26,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:26,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-14 14:09:26,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-14 14:09:26,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-07-14 14:09:26,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:26,574 INFO L85 PathProgramCache]: Analyzing trace with hash -262703928, now seen corresponding path program 1 times [2022-07-14 14:09:26,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:26,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120285549] [2022-07-14 14:09:26,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:26,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:26,606 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 14:09:26,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:26,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120285549] [2022-07-14 14:09:26,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120285549] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:09:26,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113147754] [2022-07-14 14:09:26,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:26,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:09:26,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:09:26,609 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 14:09:26,610 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 14:09:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:26,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:09:26,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:09:26,688 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 14:09:26,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:09:26,700 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 14:09:26,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113147754] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:09:26,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:09:26,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-07-14 14:09:26,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273840561] [2022-07-14 14:09:26,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:09:26,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 14:09:26,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:26,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 14:09:26,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:09:26,702 INFO L87 Difference]: Start difference. First operand 74363 states and 275282 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 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 14:09:27,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:27,013 INFO L93 Difference]: Finished difference Result 25923 states and 93407 transitions. [2022-07-14 14:09:27,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:09:27,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 14:09:27,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:27,108 INFO L225 Difference]: With dead ends: 25923 [2022-07-14 14:09:27,108 INFO L226 Difference]: Without dead ends: 25923 [2022-07-14 14:09:27,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 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 14:09:27,109 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 268 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:27,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 54 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:09:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25923 states. [2022-07-14 14:09:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25923 to 25923. [2022-07-14 14:09:28,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25923 states, 25648 states have (on average 3.6418824079850283) internal successors, (93407), 25922 states have internal predecessors, (93407), 0 states have call successors, (0), 0 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 14:09:28,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25923 states to 25923 states and 93407 transitions. [2022-07-14 14:09:28,153 INFO L78 Accepts]: Start accepts. Automaton has 25923 states and 93407 transitions. Word has length 6 [2022-07-14 14:09:28,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:28,153 INFO L495 AbstractCegarLoop]: Abstraction has 25923 states and 93407 transitions. [2022-07-14 14:09:28,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 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 14:09:28,153 INFO L276 IsEmpty]: Start isEmpty. Operand 25923 states and 93407 transitions. [2022-07-14 14:09:28,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-14 14:09:28,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:28,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:28,173 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 14:09:28,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:09:28,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-07-14 14:09:28,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:28,364 INFO L85 PathProgramCache]: Analyzing trace with hash 455926753, now seen corresponding path program 1 times [2022-07-14 14:09:28,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:28,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136661556] [2022-07-14 14:09:28,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:28,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:28,382 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 14:09:28,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:28,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136661556] [2022-07-14 14:09:28,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136661556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:28,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:28,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:09:28,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450201220] [2022-07-14 14:09:28,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:28,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:28,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:28,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:28,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:28,389 INFO L87 Difference]: Start difference. First operand 25923 states and 93407 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 14:09:28,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:28,614 INFO L93 Difference]: Finished difference Result 24487 states and 88017 transitions. [2022-07-14 14:09:28,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:28,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-14 14:09:28,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:28,707 INFO L225 Difference]: With dead ends: 24487 [2022-07-14 14:09:28,707 INFO L226 Difference]: Without dead ends: 24487 [2022-07-14 14:09:28,707 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 14:09:28,708 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:28,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 15 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24487 states. [2022-07-14 14:09:29,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24487 to 24487. [2022-07-14 14:09:29,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24487 states, 24232 states have (on average 3.6322631231429514) internal successors, (88017), 24486 states have internal predecessors, (88017), 0 states have call successors, (0), 0 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 14:09:29,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24487 states to 24487 states and 88017 transitions. [2022-07-14 14:09:29,636 INFO L78 Accepts]: Start accepts. Automaton has 24487 states and 88017 transitions. Word has length 7 [2022-07-14 14:09:29,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:29,636 INFO L495 AbstractCegarLoop]: Abstraction has 24487 states and 88017 transitions. [2022-07-14 14:09:29,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 14:09:29,636 INFO L276 IsEmpty]: Start isEmpty. Operand 24487 states and 88017 transitions. [2022-07-14 14:09:29,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:09:29,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:29,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:09:29,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-14 14:09:29,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-07-14 14:09:29,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:29,637 INFO L85 PathProgramCache]: Analyzing trace with hash -781381920, now seen corresponding path program 1 times [2022-07-14 14:09:29,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:29,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158499667] [2022-07-14 14:09:29,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:29,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:29,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:29,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158499667] [2022-07-14 14:09:29,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158499667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:29,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:29,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:09:29,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927738458] [2022-07-14 14:09:29,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:29,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:29,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:29,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:29,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:29,683 INFO L87 Difference]: Start difference. First operand 24487 states and 88017 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:29,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:29,845 INFO L93 Difference]: Finished difference Result 20377 states and 72609 transitions. [2022-07-14 14:09:29,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:29,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-14 14:09:29,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:29,927 INFO L225 Difference]: With dead ends: 20377 [2022-07-14 14:09:29,927 INFO L226 Difference]: Without dead ends: 20377 [2022-07-14 14:09:29,929 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 14:09:29,930 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:29,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 10 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:09:29,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20377 states. [2022-07-14 14:09:30,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20377 to 20377. [2022-07-14 14:09:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20377 states, 20260 states have (on average 3.5838598223099702) internal successors, (72609), 20376 states have internal predecessors, (72609), 0 states have call successors, (0), 0 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 14:09:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20377 states to 20377 states and 72609 transitions. [2022-07-14 14:09:30,386 INFO L78 Accepts]: Start accepts. Automaton has 20377 states and 72609 transitions. Word has length 9 [2022-07-14 14:09:30,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:30,386 INFO L495 AbstractCegarLoop]: Abstraction has 20377 states and 72609 transitions. [2022-07-14 14:09:30,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:30,387 INFO L276 IsEmpty]: Start isEmpty. Operand 20377 states and 72609 transitions. [2022-07-14 14:09:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:09:30,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:30,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:30,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-14 14:09:30,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-07-14 14:09:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:30,388 INFO L85 PathProgramCache]: Analyzing trace with hash 850590954, now seen corresponding path program 1 times [2022-07-14 14:09:30,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:30,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141470716] [2022-07-14 14:09:30,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:30,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:30,416 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 14:09:30,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:30,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141470716] [2022-07-14 14:09:30,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141470716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:30,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:30,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:09:30,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407723139] [2022-07-14 14:09:30,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:30,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:09:30,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:30,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:09:30,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:09:30,418 INFO L87 Difference]: Start difference. First operand 20377 states and 72609 transitions. Second operand has 5 states, 4 states have (on average 2.75) 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 14:09:31,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:31,043 INFO L93 Difference]: Finished difference Result 28657 states and 97752 transitions. [2022-07-14 14:09:31,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:09:31,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-14 14:09:31,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:31,129 INFO L225 Difference]: With dead ends: 28657 [2022-07-14 14:09:31,129 INFO L226 Difference]: Without dead ends: 28657 [2022-07-14 14:09:31,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:09:31,130 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 98 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:31,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 70 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 14:09:31,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28657 states. [2022-07-14 14:09:31,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28657 to 26852. [2022-07-14 14:09:31,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26852 states, 26742 states have (on average 3.5183606312168125) internal successors, (94088), 26851 states have internal predecessors, (94088), 0 states have call successors, (0), 0 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 14:09:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26852 states to 26852 states and 94088 transitions. [2022-07-14 14:09:31,723 INFO L78 Accepts]: Start accepts. Automaton has 26852 states and 94088 transitions. Word has length 11 [2022-07-14 14:09:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:31,723 INFO L495 AbstractCegarLoop]: Abstraction has 26852 states and 94088 transitions. [2022-07-14 14:09:31,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) 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 14:09:31,724 INFO L276 IsEmpty]: Start isEmpty. Operand 26852 states and 94088 transitions. [2022-07-14 14:09:31,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:09:31,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:31,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:31,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-14 14:09:31,725 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-07-14 14:09:31,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:31,725 INFO L85 PathProgramCache]: Analyzing trace with hash 850590955, now seen corresponding path program 1 times [2022-07-14 14:09:31,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:31,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222541752] [2022-07-14 14:09:31,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:31,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:31,755 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 14:09:31,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:31,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222541752] [2022-07-14 14:09:31,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222541752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:31,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:31,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:09:31,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065625013] [2022-07-14 14:09:31,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:31,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:09:31,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:31,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:09:31,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:09:31,760 INFO L87 Difference]: Start difference. First operand 26852 states and 94088 transitions. Second operand has 5 states, 4 states have (on average 2.75) 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 14:09:32,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:32,396 INFO L93 Difference]: Finished difference Result 30117 states and 99770 transitions. [2022-07-14 14:09:32,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:09:32,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-14 14:09:32,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:32,482 INFO L225 Difference]: With dead ends: 30117 [2022-07-14 14:09:32,482 INFO L226 Difference]: Without dead ends: 30117 [2022-07-14 14:09:32,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:09:32,483 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 101 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:32,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 54 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 14:09:32,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30117 states. [2022-07-14 14:09:32,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30117 to 28502. [2022-07-14 14:09:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28502 states, 28407 states have (on average 3.3938113845179005) internal successors, (96408), 28501 states have internal predecessors, (96408), 0 states have call successors, (0), 0 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 14:09:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28502 states to 28502 states and 96408 transitions. [2022-07-14 14:09:33,065 INFO L78 Accepts]: Start accepts. Automaton has 28502 states and 96408 transitions. Word has length 11 [2022-07-14 14:09:33,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:33,065 INFO L495 AbstractCegarLoop]: Abstraction has 28502 states and 96408 transitions. [2022-07-14 14:09:33,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) 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 14:09:33,065 INFO L276 IsEmpty]: Start isEmpty. Operand 28502 states and 96408 transitions. [2022-07-14 14:09:33,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-14 14:09:33,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:33,067 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:33,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-14 14:09:33,067 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-07-14 14:09:33,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:33,067 INFO L85 PathProgramCache]: Analyzing trace with hash 956829048, now seen corresponding path program 1 times [2022-07-14 14:09:33,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:33,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61210677] [2022-07-14 14:09:33,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:33,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-14 14:09:33,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:33,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61210677] [2022-07-14 14:09:33,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61210677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:33,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:33,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:09:33,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218158257] [2022-07-14 14:09:33,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:33,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:09:33,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:33,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:09:33,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:09:33,463 INFO L87 Difference]: Start difference. First operand 28502 states and 96408 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:33,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:33,858 INFO L93 Difference]: Finished difference Result 33595 states and 113605 transitions. [2022-07-14 14:09:33,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:09:33,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-14 14:09:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:33,985 INFO L225 Difference]: With dead ends: 33595 [2022-07-14 14:09:33,985 INFO L226 Difference]: Without dead ends: 33595 [2022-07-14 14:09:33,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:09:33,986 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 94 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:33,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 79 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:09:34,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33595 states. [2022-07-14 14:09:34,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33595 to 31410. [2022-07-14 14:09:34,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31410 states, 31319 states have (on average 3.4620198601487915) internal successors, (108427), 31409 states have internal predecessors, (108427), 0 states have call successors, (0), 0 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 14:09:35,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31410 states to 31410 states and 108427 transitions. [2022-07-14 14:09:35,163 INFO L78 Accepts]: Start accepts. Automaton has 31410 states and 108427 transitions. Word has length 15 [2022-07-14 14:09:35,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:35,164 INFO L495 AbstractCegarLoop]: Abstraction has 31410 states and 108427 transitions. [2022-07-14 14:09:35,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:35,164 INFO L276 IsEmpty]: Start isEmpty. Operand 31410 states and 108427 transitions. [2022-07-14 14:09:35,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-14 14:09:35,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:35,165 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:35,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-14 14:09:35,166 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-07-14 14:09:35,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:35,166 INFO L85 PathProgramCache]: Analyzing trace with hash 956828993, now seen corresponding path program 1 times [2022-07-14 14:09:35,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:35,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369364961] [2022-07-14 14:09:35,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:35,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-14 14:09:35,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:35,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369364961] [2022-07-14 14:09:35,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369364961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:35,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:35,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:09:35,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363991310] [2022-07-14 14:09:35,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:35,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:09:35,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:35,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:09:35,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:09:35,230 INFO L87 Difference]: Start difference. First operand 31410 states and 108427 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:35,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:35,592 INFO L93 Difference]: Finished difference Result 32143 states and 107155 transitions. [2022-07-14 14:09:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:09:35,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-14 14:09:35,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:35,685 INFO L225 Difference]: With dead ends: 32143 [2022-07-14 14:09:35,686 INFO L226 Difference]: Without dead ends: 32143 [2022-07-14 14:09:35,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:09:35,686 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 99 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:35,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 63 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:09:35,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32143 states. [2022-07-14 14:09:36,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32143 to 29499. [2022-07-14 14:09:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29499 states, 29414 states have (on average 3.3952879581151834) internal successors, (99869), 29498 states have internal predecessors, (99869), 0 states have call successors, (0), 0 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 14:09:36,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29499 states to 29499 states and 99869 transitions. [2022-07-14 14:09:36,352 INFO L78 Accepts]: Start accepts. Automaton has 29499 states and 99869 transitions. Word has length 15 [2022-07-14 14:09:36,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:36,353 INFO L495 AbstractCegarLoop]: Abstraction has 29499 states and 99869 transitions. [2022-07-14 14:09:36,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:36,353 INFO L276 IsEmpty]: Start isEmpty. Operand 29499 states and 99869 transitions. [2022-07-14 14:09:36,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-14 14:09:36,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:36,354 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-07-14 14:09:36,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-14 14:09:36,354 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-07-14 14:09:36,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:36,355 INFO L85 PathProgramCache]: Analyzing trace with hash -780015386, now seen corresponding path program 1 times [2022-07-14 14:09:36,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:36,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796772600] [2022-07-14 14:09:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:36,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:09:36,378 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:09:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:09:36,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:09:36,399 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 14:09:36,399 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-07-14 14:09:36,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-07-14 14:09:36,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-07-14 14:09:36,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-07-14 14:09:36,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-07-14 14:09:36,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-07-14 14:09:36,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-07-14 14:09:36,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-07-14 14:09:36,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-07-14 14:09:36,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-07-14 14:09:36,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-07-14 14:09:36,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-07-14 14:09:36,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-07-14 14:09:36,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-07-14 14:09:36,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2022-07-14 14:09:36,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2022-07-14 14:09:36,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2022-07-14 14:09:36,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-07-14 14:09:36,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-07-14 14:09:36,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-07-14 14:09:36,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-07-14 14:09:36,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-07-14 14:09:36,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-07-14 14:09:36,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-14 14:09:36,403 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:36,404 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-14 14:09:36,404 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-14 14:09:36,419 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-14 14:09:36,423 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:09:36,423 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 262 transitions, 568 flow [2022-07-14 14:09:36,424 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 262 transitions, 568 flow [2022-07-14 14:09:36,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 235 places, 262 transitions, 568 flow [2022-07-14 14:09:36,805 INFO L129 PetriNetUnfolder]: 96/731 cut-off events. [2022-07-14 14:09:36,805 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-07-14 14:09:36,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 731 events. 96/731 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2891 event pairs, 6 based on Foata normal form. 0/571 useless extension candidates. Maximal degree in co-relation 503. Up to 32 conditions per place. [2022-07-14 14:09:36,837 INFO L116 LiptonReduction]: Number of co-enabled transitions 35856 [2022-07-14 14:09:41,654 INFO L131 LiptonReduction]: Checked pairs total: 98000 [2022-07-14 14:09:41,654 INFO L133 LiptonReduction]: Total number of compositions: 237 [2022-07-14 14:09:41,655 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 116 transitions, 276 flow