./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:11:04,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:11:04,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:11:04,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:11:04,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:11:04,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:11:04,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:11:04,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:11:04,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:11:04,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:11:04,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:11:04,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:11:04,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:11:04,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:11:04,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:11:04,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:11:04,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:11:04,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:11:04,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:11:04,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:11:04,483 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:11:04,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:11:04,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:11:04,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:11:04,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:11:04,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:11:04,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:11:04,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:11:04,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:11:04,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:11:04,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:11:04,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:11:04,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:11:04,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:11:04,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:11:04,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:11:04,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:11:04,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:11:04,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:11:04,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:11:04,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:11:04,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:11:04,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-14 14:11:04,529 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:11:04,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:11:04,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:11:04,530 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:11:04,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 14:11:04,531 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 14:11:04,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:11:04,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:11:04,532 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:11:04,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:11:04,533 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 14:11:04,533 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:11:04,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:11:04,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 14:11:04,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:11:04,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 14:11:04,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 14:11:04,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 14:11:04,534 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 14:11:04,535 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 14:11:04,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:11:04,535 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:11:04,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 14:11:04,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:11:04,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:11:04,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 14:11:04,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:11:04,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:11:04,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 14:11:04,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 14:11:04,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:11:04,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 14:11:04,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 14:11:04,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 [2022-07-14 14:11:04,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:11:04,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:11:04,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:11:04,825 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:11:04,825 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:11:04,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2022-07-14 14:11:04,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2f5c5ebd/89e218bea3eb4ae0a04e9ae8a2472b7f/FLAGa3a4d7a43 [2022-07-14 14:11:05,317 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:11:05,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2022-07-14 14:11:05,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2f5c5ebd/89e218bea3eb4ae0a04e9ae8a2472b7f/FLAGa3a4d7a43 [2022-07-14 14:11:05,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2f5c5ebd/89e218bea3eb4ae0a04e9ae8a2472b7f [2022-07-14 14:11:05,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:11:05,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:11:05,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:11:05,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:11:05,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:11:05,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:11:05" (1/1) ... [2022-07-14 14:11:05,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e99d9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:05, skipping insertion in model container [2022-07-14 14:11:05,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:11:05" (1/1) ... [2022-07-14 14:11:05,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:11:05,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:11:06,066 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_60-invariant_racefree.i[30176,30189] [2022-07-14 14:11:06,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:11:06,110 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:11:06,156 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_60-invariant_racefree.i[30176,30189] [2022-07-14 14:11:06,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:11:06,208 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:11:06,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:06 WrapperNode [2022-07-14 14:11:06,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:11:06,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:11:06,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:11:06,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:11:06,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:06" (1/1) ... [2022-07-14 14:11:06,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:06" (1/1) ... [2022-07-14 14:11:06,261 INFO L137 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 153 [2022-07-14 14:11:06,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:11:06,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:11:06,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:11:06,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:11:06,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:06" (1/1) ... [2022-07-14 14:11:06,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:06" (1/1) ... [2022-07-14 14:11:06,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:06" (1/1) ... [2022-07-14 14:11:06,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:06" (1/1) ... [2022-07-14 14:11:06,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:06" (1/1) ... [2022-07-14 14:11:06,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:06" (1/1) ... [2022-07-14 14:11:06,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:06" (1/1) ... [2022-07-14 14:11:06,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:11:06,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:11:06,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:11:06,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:11:06,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:06" (1/1) ... [2022-07-14 14:11:06,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:11:06,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:11:06,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-14 14:11:06,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-14 14:11:06,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 14:11:06,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 14:11:06,405 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-14 14:11:06,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 14:11:06,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 14:11:06,406 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-14 14:11:06,406 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-14 14:11:06,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 14:11:06,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 14:11:06,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:11:06,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:11:06,408 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-14 14:11:06,542 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:11:06,557 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:11:06,794 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:11:06,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:11:06,807 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2022-07-14 14:11:06,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:11:06 BoogieIcfgContainer [2022-07-14 14:11:06,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:11:06,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 14:11:06,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 14:11:06,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 14:11:06,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 02:11:05" (1/3) ... [2022-07-14 14:11:06,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc1bcc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:11:06, skipping insertion in model container [2022-07-14 14:11:06,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:11:06" (2/3) ... [2022-07-14 14:11:06,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc1bcc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:11:06, skipping insertion in model container [2022-07-14 14:11:06,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:11:06" (3/3) ... [2022-07-14 14:11:06,827 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2022-07-14 14:11:06,834 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-14 14:11:06,842 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 14:11:06,843 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-07-14 14:11:06,843 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-14 14:11:06,930 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-14 14:11:06,977 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:11:06,987 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 168 transitions, 344 flow [2022-07-14 14:11:06,990 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 168 transitions, 344 flow [2022-07-14 14:11:06,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 168 transitions, 344 flow [2022-07-14 14:11:07,049 INFO L129 PetriNetUnfolder]: 33/233 cut-off events. [2022-07-14 14:11:07,050 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-14 14:11:07,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 233 events. 33/233 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 820 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 128. Up to 6 conditions per place. [2022-07-14 14:11:07,064 INFO L116 LiptonReduction]: Number of co-enabled transitions 8100 [2022-07-14 14:11:10,142 INFO L131 LiptonReduction]: Checked pairs total: 19685 [2022-07-14 14:11:10,143 INFO L133 LiptonReduction]: Total number of compositions: 155 [2022-07-14 14:11:10,150 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 70 transitions, 148 flow [2022-07-14 14:11:10,209 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 620 states, 569 states have (on average 2.7996485061511422) internal successors, (1593), 619 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:10,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:11:10,232 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@1d615af2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69cf0b6b [2022-07-14 14:11:10,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-07-14 14:11:10,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 620 states, 569 states have (on average 2.7996485061511422) internal successors, (1593), 619 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:10,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-14 14:11:10,242 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:10,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-14 14:11:10,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-14 14:11:10,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:10,247 INFO L85 PathProgramCache]: Analyzing trace with hash 20428065, now seen corresponding path program 1 times [2022-07-14 14:11:10,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:10,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028082064] [2022-07-14 14:11:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:10,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:10,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:10,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028082064] [2022-07-14 14:11:10,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028082064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:10,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:11:10,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:11:10,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215493148] [2022-07-14 14:11:10,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:10,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:11:10,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:10,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:11:10,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:10,512 INFO L87 Difference]: Start difference. First operand has 620 states, 569 states have (on average 2.7996485061511422) internal successors, (1593), 619 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:10,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:10,646 INFO L93 Difference]: Finished difference Result 558 states and 1086 transitions. [2022-07-14 14:11:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:11:10,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-07-14 14:11:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:10,663 INFO L225 Difference]: With dead ends: 558 [2022-07-14 14:11:10,663 INFO L226 Difference]: Without dead ends: 548 [2022-07-14 14:11:10,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:10,667 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 14 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 14:11:10,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 14 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:10,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-07-14 14:11:10,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2022-07-14 14:11:10,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 513 states have (on average 2.0799220272904484) internal successors, (1067), 547 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:10,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1067 transitions. [2022-07-14 14:11:10,725 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1067 transitions. Word has length 4 [2022-07-14 14:11:10,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:10,725 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 1067 transitions. [2022-07-14 14:11:10,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:10,726 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1067 transitions. [2022-07-14 14:11:10,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 14:11:10,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:10,726 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-07-14 14:11:10,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 14:11:10,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-14 14:11:10,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:10,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1843448053, now seen corresponding path program 1 times [2022-07-14 14:11:10,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:10,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126416155] [2022-07-14 14:11:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:10,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:11:10,755 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:11:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:11:10,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:11:10,788 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 14:11:10,789 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-07-14 14:11:10,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-07-14 14:11:10,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-07-14 14:11:10,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-07-14 14:11:10,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-07-14 14:11:10,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-07-14 14:11:10,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-07-14 14:11:10,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-07-14 14:11:10,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-07-14 14:11:10,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-07-14 14:11:10,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-07-14 14:11:10,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-07-14 14:11:10,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-07-14 14:11:10,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-07-14 14:11:10,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-07-14 14:11:10,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-07-14 14:11:10,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-07-14 14:11:10,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 14:11:10,797 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-14 14:11:10,798 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-14 14:11:10,799 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-14 14:11:10,818 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-14 14:11:10,822 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:11:10,822 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 224 transitions, 466 flow [2022-07-14 14:11:10,823 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 224 transitions, 466 flow [2022-07-14 14:11:10,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 196 places, 224 transitions, 466 flow [2022-07-14 14:11:10,884 INFO L129 PetriNetUnfolder]: 57/391 cut-off events. [2022-07-14 14:11:10,885 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-14 14:11:10,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 391 events. 57/391 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1577 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 235. Up to 9 conditions per place. [2022-07-14 14:11:10,909 INFO L116 LiptonReduction]: Number of co-enabled transitions 24084 [2022-07-14 14:11:14,452 INFO L131 LiptonReduction]: Checked pairs total: 60182 [2022-07-14 14:11:14,452 INFO L133 LiptonReduction]: Total number of compositions: 206 [2022-07-14 14:11:14,453 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 104 transitions, 226 flow [2022-07-14 14:11:15,031 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 14415 states, 14124 states have (on average 3.972741433021807) internal successors, (56111), 14414 states have internal predecessors, (56111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:15,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:11:15,037 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@1d615af2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69cf0b6b [2022-07-14 14:11:15,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-07-14 14:11:15,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 14415 states, 14124 states have (on average 3.972741433021807) internal successors, (56111), 14414 states have internal predecessors, (56111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 14:11:15,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:15,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 14:11:15,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-14 14:11:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:15,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1095064618, now seen corresponding path program 1 times [2022-07-14 14:11:15,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:15,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214103532] [2022-07-14 14:11:15,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:15,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:15,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:15,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214103532] [2022-07-14 14:11:15,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214103532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:15,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:11:15,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:11:15,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180919021] [2022-07-14 14:11:15,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:15,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:11:15,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:15,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:11:15,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:15,203 INFO L87 Difference]: Start difference. First operand has 14415 states, 14124 states have (on average 3.972741433021807) internal successors, (56111), 14414 states have internal predecessors, (56111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:15,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:15,560 INFO L93 Difference]: Finished difference Result 14353 states and 41788 transitions. [2022-07-14 14:11:15,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:11:15,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 14:11:15,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:15,687 INFO L225 Difference]: With dead ends: 14353 [2022-07-14 14:11:15,687 INFO L226 Difference]: Without dead ends: 14271 [2022-07-14 14:11:15,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:15,689 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:15,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:15,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14271 states. [2022-07-14 14:11:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14271 to 14271. [2022-07-14 14:11:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14271 states, 13998 states have (on average 2.967852550364338) internal successors, (41544), 14270 states have internal predecessors, (41544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:16,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14271 states to 14271 states and 41544 transitions. [2022-07-14 14:11:16,393 INFO L78 Accepts]: Start accepts. Automaton has 14271 states and 41544 transitions. Word has length 5 [2022-07-14 14:11:16,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:16,412 INFO L495 AbstractCegarLoop]: Abstraction has 14271 states and 41544 transitions. [2022-07-14 14:11:16,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:16,412 INFO L276 IsEmpty]: Start isEmpty. Operand 14271 states and 41544 transitions. [2022-07-14 14:11:16,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:11:16,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:16,415 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:11:16,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 14:11:16,416 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-14 14:11:16,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:16,417 INFO L85 PathProgramCache]: Analyzing trace with hash 774072775, now seen corresponding path program 1 times [2022-07-14 14:11:16,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:16,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389281637] [2022-07-14 14:11:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:16,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:16,491 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 14:11:16,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:16,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389281637] [2022-07-14 14:11:16,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389281637] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:16,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:11:16,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:11:16,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052305551] [2022-07-14 14:11:16,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:16,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:11:16,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:16,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:11:16,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:16,496 INFO L87 Difference]: Start difference. First operand 14271 states and 41544 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 14:11:16,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:16,800 INFO L93 Difference]: Finished difference Result 13787 states and 40092 transitions. [2022-07-14 14:11:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:11:16,801 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 14:11:16,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:16,905 INFO L225 Difference]: With dead ends: 13787 [2022-07-14 14:11:16,906 INFO L226 Difference]: Without dead ends: 13787 [2022-07-14 14:11:16,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:16,909 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:16,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 16 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:16,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13787 states. [2022-07-14 14:11:17,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13787 to 13787. [2022-07-14 14:11:17,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13787 states, 13539 states have (on average 2.9612231331708396) internal successors, (40092), 13786 states have internal predecessors, (40092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13787 states to 13787 states and 40092 transitions. [2022-07-14 14:11:17,536 INFO L78 Accepts]: Start accepts. Automaton has 13787 states and 40092 transitions. Word has length 9 [2022-07-14 14:11:17,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:17,538 INFO L495 AbstractCegarLoop]: Abstraction has 13787 states and 40092 transitions. [2022-07-14 14:11:17,538 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 14:11:17,538 INFO L276 IsEmpty]: Start isEmpty. Operand 13787 states and 40092 transitions. [2022-07-14 14:11:17,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:11:17,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:17,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:11:17,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 14:11:17,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-14 14:11:17,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:17,542 INFO L85 PathProgramCache]: Analyzing trace with hash 774072776, now seen corresponding path program 1 times [2022-07-14 14:11:17,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:17,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152566151] [2022-07-14 14:11:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:17,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:17,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:11:17,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:17,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152566151] [2022-07-14 14:11:17,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152566151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:17,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:11:17,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:11:17,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002736039] [2022-07-14 14:11:17,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:17,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:11:17,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:17,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:11:17,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:17,623 INFO L87 Difference]: Start difference. First operand 13787 states and 40092 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 14:11:18,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:18,046 INFO L93 Difference]: Finished difference Result 13303 states and 38640 transitions. [2022-07-14 14:11:18,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:11:18,046 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 14:11:18,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:18,128 INFO L225 Difference]: With dead ends: 13303 [2022-07-14 14:11:18,128 INFO L226 Difference]: Without dead ends: 13303 [2022-07-14 14:11:18,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:18,130 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 46 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:18,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 30 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:11:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13303 states. [2022-07-14 14:11:18,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13303 to 13303. [2022-07-14 14:11:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13303 states, 13080 states have (on average 2.9541284403669725) internal successors, (38640), 13302 states have internal predecessors, (38640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13303 states to 13303 states and 38640 transitions. [2022-07-14 14:11:18,618 INFO L78 Accepts]: Start accepts. Automaton has 13303 states and 38640 transitions. Word has length 9 [2022-07-14 14:11:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:18,618 INFO L495 AbstractCegarLoop]: Abstraction has 13303 states and 38640 transitions. [2022-07-14 14:11:18,618 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 14:11:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 13303 states and 38640 transitions. [2022-07-14 14:11:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:11:18,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:18,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:11:18,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 14:11:18,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-14 14:11:18,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:18,623 INFO L85 PathProgramCache]: Analyzing trace with hash 773091317, now seen corresponding path program 1 times [2022-07-14 14:11:18,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:18,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821286910] [2022-07-14 14:11:18,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:18,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:18,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:18,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821286910] [2022-07-14 14:11:18,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821286910] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:11:18,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689113886] [2022-07-14 14:11:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:18,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:11:18,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:11:18,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:11:18,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 14:11:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:18,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:11:18,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:11:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:18,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:11:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:18,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689113886] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:11:18,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:11:18,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-07-14 14:11:18,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846570374] [2022-07-14 14:11:18,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:11:18,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 14:11:18,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:18,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 14:11:18,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:11:18,863 INFO L87 Difference]: Start difference. First operand 13303 states and 38640 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:18,981 INFO L93 Difference]: Finished difference Result 2511 states and 6955 transitions. [2022-07-14 14:11:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 14:11:18,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-14 14:11:18,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:18,989 INFO L225 Difference]: With dead ends: 2511 [2022-07-14 14:11:18,989 INFO L226 Difference]: Without dead ends: 2511 [2022-07-14 14:11:18,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:11:18,990 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 280 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:18,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 29 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:18,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2022-07-14 14:11:19,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2511. [2022-07-14 14:11:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2486 states have (on average 2.7976669348350764) internal successors, (6955), 2510 states have internal predecessors, (6955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:19,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 6955 transitions. [2022-07-14 14:11:19,047 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 6955 transitions. Word has length 9 [2022-07-14 14:11:19,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:19,048 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 6955 transitions. [2022-07-14 14:11:19,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:19,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 6955 transitions. [2022-07-14 14:11:19,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:11:19,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:19,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:11:19,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 14:11:19,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-14 14:11:19,272 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-14 14:11:19,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:19,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1952129068, now seen corresponding path program 1 times [2022-07-14 14:11:19,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:19,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450732506] [2022-07-14 14:11:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:19,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:19,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:19,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450732506] [2022-07-14 14:11:19,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450732506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:19,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:11:19,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:11:19,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706928320] [2022-07-14 14:11:19,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:19,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:11:19,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:19,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:11:19,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:19,299 INFO L87 Difference]: Start difference. First operand 2511 states and 6955 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 14:11:19,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:19,316 INFO L93 Difference]: Finished difference Result 276 states and 671 transitions. [2022-07-14 14:11:19,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:11:19,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 14:11:19,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:19,317 INFO L225 Difference]: With dead ends: 276 [2022-07-14 14:11:19,318 INFO L226 Difference]: Without dead ends: 276 [2022-07-14 14:11:19,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:19,319 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:19,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:11:19,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-07-14 14:11:19,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2022-07-14 14:11:19,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 2.44) internal successors, (671), 275 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:19,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 671 transitions. [2022-07-14 14:11:19,325 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 671 transitions. Word has length 9 [2022-07-14 14:11:19,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:11:19,325 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 671 transitions. [2022-07-14 14:11:19,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 14:11:19,325 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 671 transitions. [2022-07-14 14:11:19,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:11:19,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:19,326 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-07-14 14:11:19,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 14:11:19,327 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-14 14:11:19,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:19,327 INFO L85 PathProgramCache]: Analyzing trace with hash 854675024, now seen corresponding path program 1 times [2022-07-14 14:11:19,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:19,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209932962] [2022-07-14 14:11:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:19,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:11:19,344 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:11:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:11:19,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:11:19,364 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 14:11:19,365 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-07-14 14:11:19,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-07-14 14:11:19,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-07-14 14:11:19,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-07-14 14:11:19,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-07-14 14:11:19,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-07-14 14:11:19,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-07-14 14:11:19,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-07-14 14:11:19,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-07-14 14:11:19,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-07-14 14:11:19,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-07-14 14:11:19,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-07-14 14:11:19,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-07-14 14:11:19,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-07-14 14:11:19,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-07-14 14:11:19,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-07-14 14:11:19,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-07-14 14:11:19,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-07-14 14:11:19,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-07-14 14:11:19,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-07-14 14:11:19,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-07-14 14:11:19,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-14 14:11:19,374 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-14 14:11:19,374 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-14 14:11:19,374 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-14 14:11:19,395 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-14 14:11:19,398 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:11:19,398 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 280 transitions, 590 flow [2022-07-14 14:11:19,399 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 280 transitions, 590 flow [2022-07-14 14:11:19,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 243 places, 280 transitions, 590 flow [2022-07-14 14:11:19,549 INFO L129 PetriNetUnfolder]: 86/590 cut-off events. [2022-07-14 14:11:19,550 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-07-14 14:11:19,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 590 events. 86/590 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2492 event pairs, 1 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 399. Up to 16 conditions per place. [2022-07-14 14:11:19,586 INFO L116 LiptonReduction]: Number of co-enabled transitions 45360 [2022-07-14 14:11:23,799 INFO L131 LiptonReduction]: Checked pairs total: 124811 [2022-07-14 14:11:23,799 INFO L133 LiptonReduction]: Total number of compositions: 246 [2022-07-14 14:11:23,801 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 105 places, 137 transitions, 304 flow [2022-07-14 14:11:34,705 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 320941 states, 319360 states have (on average 5.305626878757515) internal successors, (1694405), 320940 states have internal predecessors, (1694405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:34,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:11:34,707 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@1d615af2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69cf0b6b [2022-07-14 14:11:34,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-07-14 14:11:35,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 320941 states, 319360 states have (on average 5.305626878757515) internal successors, (1694405), 320940 states have internal predecessors, (1694405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:35,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 14:11:35,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:11:35,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 14:11:35,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-07-14 14:11:35,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:11:35,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1649940999, now seen corresponding path program 1 times [2022-07-14 14:11:35,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:11:35,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706403316] [2022-07-14 14:11:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:11:35,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:11:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:11:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:11:35,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:11:35,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706403316] [2022-07-14 14:11:35,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706403316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:11:35,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:11:35,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:11:35,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66068245] [2022-07-14 14:11:35,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:11:35,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:11:35,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:11:35,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:11:35,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:35,975 INFO L87 Difference]: Start difference. First operand has 320941 states, 319360 states have (on average 5.305626878757515) internal successors, (1694405), 320940 states have internal predecessors, (1694405), 0 states have call successors, (0), 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, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:11:42,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:11:42,728 INFO L93 Difference]: Finished difference Result 320879 states and 1249743 transitions. [2022-07-14 14:11:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:11:42,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 14:11:42,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:11:45,601 INFO L225 Difference]: With dead ends: 320879 [2022-07-14 14:11:45,601 INFO L226 Difference]: Without dead ends: 320149 [2022-07-14 14:11:45,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:11:45,602 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 25 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:11:45,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 36 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:11:47,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320149 states. [2022-07-14 14:11:58,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320149 to 320149. [2022-07-14 14:11:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320149 states, 318590 states have (on average 3.913575441790389) internal successors, (1246826), 320148 states have internal predecessors, (1246826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:12:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320149 states to 320149 states and 1246826 transitions. [2022-07-14 14:12:03,093 INFO L78 Accepts]: Start accepts. Automaton has 320149 states and 1246826 transitions. Word has length 5 [2022-07-14 14:12:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:12:03,093 INFO L495 AbstractCegarLoop]: Abstraction has 320149 states and 1246826 transitions. [2022-07-14 14:12:03,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:12:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 320149 states and 1246826 transitions. [2022-07-14 14:12:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:12:03,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:12:03,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:12:03,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-14 14:12:03,095 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-07-14 14:12:03,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:12:03,096 INFO L85 PathProgramCache]: Analyzing trace with hash 540318489, now seen corresponding path program 1 times [2022-07-14 14:12:03,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:12:03,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219506232] [2022-07-14 14:12:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:12:03,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:12:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:12:03,116 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 14:12:03,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:12:03,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219506232] [2022-07-14 14:12:03,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219506232] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:12:03,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532206877] [2022-07-14 14:12:03,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:12:03,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:12:03,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:12:03,119 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 14:12:03,132 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 14:12:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:12:03,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:12:03,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:12:03,203 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 14:12:03,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:12:03,220 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 14:12:03,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532206877] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:12:03,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:12:03,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-07-14 14:12:03,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109749815] [2022-07-14 14:12:03,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:12:03,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 14:12:03,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:12:03,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 14:12:03,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:12:03,223 INFO L87 Difference]: Start difference. First operand 320149 states and 1246826 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:12:04,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:12:04,037 INFO L93 Difference]: Finished difference Result 66399 states and 252343 transitions. [2022-07-14 14:12:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:12:04,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-14 14:12:04,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:12:04,411 INFO L225 Difference]: With dead ends: 66399 [2022-07-14 14:12:04,411 INFO L226 Difference]: Without dead ends: 66399 [2022-07-14 14:12:04,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 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 14:12:04,412 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 387 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:12:04,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 77 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:12:05,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66399 states. [2022-07-14 14:12:06,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66399 to 66399. [2022-07-14 14:12:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66399 states, 66124 states have (on average 3.8162089407779325) internal successors, (252343), 66398 states have internal predecessors, (252343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:12:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66399 states to 66399 states and 252343 transitions. [2022-07-14 14:12:07,398 INFO L78 Accepts]: Start accepts. Automaton has 66399 states and 252343 transitions. Word has length 9 [2022-07-14 14:12:07,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:12:07,398 INFO L495 AbstractCegarLoop]: Abstraction has 66399 states and 252343 transitions. [2022-07-14 14:12:07,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:12:07,398 INFO L276 IsEmpty]: Start isEmpty. Operand 66399 states and 252343 transitions. [2022-07-14 14:12:07,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:12:07,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:12:07,399 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:12:07,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-14 14:12:07,600 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,SelfDestructingSolverStorable9 [2022-07-14 14:12:07,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-07-14 14:12:07,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:12:07,601 INFO L85 PathProgramCache]: Analyzing trace with hash 540566903, now seen corresponding path program 1 times [2022-07-14 14:12:07,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:12:07,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402220292] [2022-07-14 14:12:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:12:07,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:12:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:12:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:12:07,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:12:07,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402220292] [2022-07-14 14:12:07,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402220292] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:12:07,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202463051] [2022-07-14 14:12:07,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:12:07,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:12:07,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:12:07,640 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 14:12:07,663 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 14:12:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:12:07,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:12:07,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:12:07,738 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 14:12:07,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:12:07,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202463051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:12:07,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 14:12:07,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-07-14 14:12:07,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438847322] [2022-07-14 14:12:07,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:12:07,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 14:12:07,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:12:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 14:12:07,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:12:07,741 INFO L87 Difference]: Start difference. First operand 66399 states and 252343 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:12:08,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:12:08,181 INFO L93 Difference]: Finished difference Result 55267 states and 208299 transitions. [2022-07-14 14:12:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 14:12:08,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-14 14:12:08,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:12:08,465 INFO L225 Difference]: With dead ends: 55267 [2022-07-14 14:12:08,466 INFO L226 Difference]: Without dead ends: 55267 [2022-07-14 14:12:08,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:12:08,466 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 91 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:12:08,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 20 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:12:09,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55267 states.