./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invariants/even.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/loop-invariants/even.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 907de60c76ba721f5ee8090b571387619e8ea4f2c3c4961a16da0916b80c691f --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 16:12:44,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 16:12:44,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 16:12:44,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 16:12:44,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 16:12:44,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 16:12:44,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 16:12:44,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 16:12:44,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 16:12:44,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 16:12:44,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 16:12:44,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 16:12:44,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 16:12:44,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 16:12:44,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 16:12:44,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 16:12:44,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 16:12:44,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 16:12:44,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 16:12:44,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 16:12:44,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 16:12:44,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 16:12:44,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 16:12:44,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 16:12:44,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 16:12:44,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 16:12:44,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 16:12:44,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 16:12:44,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 16:12:44,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 16:12:44,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 16:12:44,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 16:12:44,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 16:12:44,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 16:12:44,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 16:12:44,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 16:12:44,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 16:12:44,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 16:12:44,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 16:12:44,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 16:12:44,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 16:12:44,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 16:12:44,605 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 16:12:44,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 16:12:44,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 16:12:44,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 16:12:44,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 16:12:44,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 16:12:44,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 16:12:44,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 16:12:44,609 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 16:12:44,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 16:12:44,609 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 16:12:44,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 16:12:44,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 16:12:44,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 16:12:44,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 16:12:44,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 16:12:44,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 16:12:44,610 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 16:12:44,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 16:12:44,624 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 16:12:44,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 16:12:44,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 16:12:44,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 16:12:44,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 16:12:44,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:12:44,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 16:12:44,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 16:12:44,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 16:12:44,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 16:12:44,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 16:12:44,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 16:12:44,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 16:12:44,627 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 16:12:44,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 16:12:44,627 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 16:12:44,627 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 907de60c76ba721f5ee8090b571387619e8ea4f2c3c4961a16da0916b80c691f [2023-02-18 16:12:44,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 16:12:44,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 16:12:44,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 16:12:44,845 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 16:12:44,846 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 16:12:44,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invariants/even.c [2023-02-18 16:12:45,819 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 16:12:45,944 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 16:12:45,945 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/even.c [2023-02-18 16:12:45,949 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69341fb2/ee7000d4f53444c2b122fe48447d66c9/FLAGa0e48a541 [2023-02-18 16:12:45,965 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69341fb2/ee7000d4f53444c2b122fe48447d66c9 [2023-02-18 16:12:45,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 16:12:45,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 16:12:45,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 16:12:45,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 16:12:45,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 16:12:45,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:12:45" (1/1) ... [2023-02-18 16:12:45,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c2777b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:12:45, skipping insertion in model container [2023-02-18 16:12:45,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:12:45" (1/1) ... [2023-02-18 16:12:45,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 16:12:45,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 16:12:46,102 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/even.c[351,364] [2023-02-18 16:12:46,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:12:46,121 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 16:12:46,130 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/even.c[351,364] [2023-02-18 16:12:46,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:12:46,139 INFO L208 MainTranslator]: Completed translation [2023-02-18 16:12:46,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:12:46 WrapperNode [2023-02-18 16:12:46,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 16:12:46,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 16:12:46,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 16:12:46,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 16:12:46,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:12:46" (1/1) ... [2023-02-18 16:12:46,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:12:46" (1/1) ... [2023-02-18 16:12:46,159 INFO L138 Inliner]: procedures = 13, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2023-02-18 16:12:46,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 16:12:46,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 16:12:46,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 16:12:46,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 16:12:46,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:12:46" (1/1) ... [2023-02-18 16:12:46,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:12:46" (1/1) ... [2023-02-18 16:12:46,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:12:46" (1/1) ... [2023-02-18 16:12:46,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:12:46" (1/1) ... [2023-02-18 16:12:46,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:12:46" (1/1) ... [2023-02-18 16:12:46,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:12:46" (1/1) ... [2023-02-18 16:12:46,170 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:12:46" (1/1) ... [2023-02-18 16:12:46,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:12:46" (1/1) ... [2023-02-18 16:12:46,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 16:12:46,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 16:12:46,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 16:12:46,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 16:12:46,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:12:46" (1/1) ... [2023-02-18 16:12:46,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:12:46,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:12:46,197 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) [2023-02-18 16:12:46,202 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 [2023-02-18 16:12:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 16:12:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 16:12:46,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 16:12:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 16:12:46,295 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 16:12:46,301 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 16:12:46,365 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 16:12:46,368 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 16:12:46,368 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 16:12:46,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:12:46 BoogieIcfgContainer [2023-02-18 16:12:46,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 16:12:46,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 16:12:46,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 16:12:46,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 16:12:46,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 04:12:45" (1/3) ... [2023-02-18 16:12:46,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f92c8bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:12:46, skipping insertion in model container [2023-02-18 16:12:46,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:12:46" (2/3) ... [2023-02-18 16:12:46,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f92c8bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:12:46, skipping insertion in model container [2023-02-18 16:12:46,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:12:46" (3/3) ... [2023-02-18 16:12:46,375 INFO L112 eAbstractionObserver]: Analyzing ICFG even.c [2023-02-18 16:12:46,386 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 16:12:46,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 16:12:46,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 16:12:46,417 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=PETRI_NET, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@372c0bc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 16:12:46,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 16:12:46,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:12:46,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 16:12:46,423 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:12:46,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 16:12:46,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:12:46,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:12:46,427 INFO L85 PathProgramCache]: Analyzing trace with hash 889783783, now seen corresponding path program 1 times [2023-02-18 16:12:46,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:12:46,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937299564] [2023-02-18 16:12:46,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:12:46,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:12:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:12:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:12:46,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:12:46,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937299564] [2023-02-18 16:12:46,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937299564] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:12:46,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:12:46,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 16:12:46,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269218079] [2023-02-18 16:12:46,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:12:46,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 16:12:46,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:12:46,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 16:12:46,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 16:12:46,588 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:12:46,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:12:46,597 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2023-02-18 16:12:46,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 16:12:46,599 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 16:12:46,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:12:46,605 INFO L225 Difference]: With dead ends: 20 [2023-02-18 16:12:46,605 INFO L226 Difference]: Without dead ends: 8 [2023-02-18 16:12:46,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 16:12:46,611 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:12:46,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:12:46,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-02-18 16:12:46,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-18 16:12:46,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:12:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-02-18 16:12:46,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-02-18 16:12:46,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:12:46,631 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-02-18 16:12:46,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:12:46,631 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-02-18 16:12:46,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 16:12:46,632 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:12:46,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:12:46,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 16:12:46,633 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:12:46,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:12:46,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1806847180, now seen corresponding path program 1 times [2023-02-18 16:12:46,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:12:46,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335539390] [2023-02-18 16:12:46,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:12:46,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:12:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:12:46,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:12:46,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:12:46,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335539390] [2023-02-18 16:12:46,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335539390] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:12:46,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:12:46,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 16:12:46,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588577903] [2023-02-18 16:12:46,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:12:46,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 16:12:46,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:12:46,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 16:12:46,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 16:12:46,898 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:12:46,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:12:46,952 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-02-18 16:12:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 16:12:46,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-18 16:12:46,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:12:46,953 INFO L225 Difference]: With dead ends: 14 [2023-02-18 16:12:46,953 INFO L226 Difference]: Without dead ends: 10 [2023-02-18 16:12:46,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 16:12:46,954 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:12:46,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:12:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-02-18 16:12:46,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-02-18 16:12:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:12:46,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-02-18 16:12:46,959 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2023-02-18 16:12:46,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:12:46,959 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-02-18 16:12:46,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:12:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-02-18 16:12:46,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 16:12:46,960 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:12:46,960 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:12:46,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 16:12:46,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:12:46,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:12:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1262026695, now seen corresponding path program 1 times [2023-02-18 16:12:46,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:12:46,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970979054] [2023-02-18 16:12:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:12:46,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:12:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:12:47,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:12:47,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:12:47,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970979054] [2023-02-18 16:12:47,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970979054] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 16:12:47,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119325469] [2023-02-18 16:12:47,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:12:47,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:12:47,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:12:47,141 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) [2023-02-18 16:12:47,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 16:12:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:12:47,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 16:12:47,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:12:47,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:12:47,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:12:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 16:12:47,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119325469] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 16:12:47,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-18 16:12:47,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2023-02-18 16:12:47,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325845087] [2023-02-18 16:12:47,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:12:47,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 16:12:47,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:12:47,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 16:12:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-02-18 16:12:47,298 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:12:47,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:12:47,314 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2023-02-18 16:12:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 16:12:47,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 [2023-02-18 16:12:47,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:12:47,315 INFO L225 Difference]: With dead ends: 10 [2023-02-18 16:12:47,315 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 16:12:47,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-18 16:12:47,316 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:12:47,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:12:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 16:12:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 16:12:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:12:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 16:12:47,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2023-02-18 16:12:47,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:12:47,318 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 16:12:47,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 16:12:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 16:12:47,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 16:12:47,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 16:12:47,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 16:12:47,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:12:47,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 16:12:47,533 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 16:12:47,533 INFO L899 garLoopResultBuilder]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2023-02-18 16:12:47,534 INFO L895 garLoopResultBuilder]: At program point L13-3(lines 13 15) the Hoare annotation is: (let ((.cse13 (mod |ULTIMATE.start_main_~x~0#1| 2))) (let ((.cse14 (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 0)) (.cse15 (= 0 .cse13))) (let ((.cse0 (or (= 0 (mod .cse13 4294967296)) (and .cse14 (not .cse15)))) (.cse1 (or (= 0 (mod (+ .cse13 4294967294) 4294967296)) (not .cse14) .cse15))) (or (and .cse0 .cse1) (and (= |ULTIMATE.start_main_~x~0#1| 0) (let ((.cse12 (* (- 2) (div |ULTIMATE.start_main_~x~0#1| 2)))) (let ((.cse11 (+ |ULTIMATE.start_main_~x~0#1| .cse12))) (let ((.cse7 (= 0 .cse11)) (.cse8 (<= (+ (* (- 1) |ULTIMATE.start_main_~x~0#1|) (* 4294967296 (div |ULTIMATE.start_main_~x~0#1| 4294967296))) 0)) (.cse9 (div (+ .cse12 |ULTIMATE.start_main_~x~0#1|) 4294967296)) (.cse10 (div (+ .cse12 |ULTIMATE.start_main_~x~0#1| (- 2)) 4294967296))) (let ((.cse4 (= 0 (+ (+ |ULTIMATE.start_main_~x~0#1| .cse12 (- 2)) (* (- 4294967296) .cse10)))) (.cse5 (= 0 (+ .cse11 (* (- 4294967296) .cse9)))) (.cse6 (or .cse7 .cse8)) (.cse2 (not .cse7)) (.cse3 (not .cse8))) (or (and .cse2 .cse3 (not .cse4)) (and (not .cse5) .cse6) (and (or .cse7 .cse8 .cse4) (or (and .cse2 .cse3) .cse5)) (and .cse6 (<= (+ .cse9 1) 0)) (and .cse2 .cse3 (<= (+ .cse10 1) 0))))))) .cse0 .cse1))))) [2023-02-18 16:12:47,534 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 16:12:47,534 INFO L899 garLoopResultBuilder]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2023-02-18 16:12:47,534 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 11 18) the Hoare annotation is: true [2023-02-18 16:12:47,535 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-02-18 16:12:47,535 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 16:12:47,535 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 16:12:47,535 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2023-02-18 16:12:47,535 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2023-02-18 16:12:47,535 INFO L902 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2023-02-18 16:12:47,539 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-18 16:12:47,541 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 16:12:47,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 04:12:47 BoogieIcfgContainer [2023-02-18 16:12:47,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 16:12:47,569 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 16:12:47,569 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 16:12:47,569 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 16:12:47,570 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:12:46" (3/4) ... [2023-02-18 16:12:47,586 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 16:12:47,593 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-02-18 16:12:47,593 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-02-18 16:12:47,593 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-18 16:12:47,594 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 16:12:47,594 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 16:12:47,619 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 16:12:47,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 16:12:47,620 INFO L158 Benchmark]: Toolchain (without parser) took 1651.97ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 145.6MB in the beginning and 162.0MB in the end (delta: -16.3MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2023-02-18 16:12:47,620 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:12:47,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.50ms. Allocated memory is still 174.1MB. Free memory was 145.6MB in the beginning and 134.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 16:12:47,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.55ms. Allocated memory is still 174.1MB. Free memory was 134.5MB in the beginning and 133.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 16:12:47,621 INFO L158 Benchmark]: Boogie Preprocessor took 11.95ms. Allocated memory is still 174.1MB. Free memory was 133.2MB in the beginning and 132.4MB in the end (delta: 792.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:12:47,621 INFO L158 Benchmark]: RCFGBuilder took 197.76ms. Allocated memory is still 174.1MB. Free memory was 132.4MB in the beginning and 140.0MB in the end (delta: -7.6MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2023-02-18 16:12:47,621 INFO L158 Benchmark]: TraceAbstraction took 1197.57ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 139.1MB in the beginning and 164.1MB in the end (delta: -24.9MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2023-02-18 16:12:47,622 INFO L158 Benchmark]: Witness Printer took 50.49ms. Allocated memory is still 209.7MB. Free memory was 164.1MB in the beginning and 162.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 16:12:47,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.50ms. Allocated memory is still 174.1MB. Free memory was 145.6MB in the beginning and 134.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.55ms. Allocated memory is still 174.1MB. Free memory was 134.5MB in the beginning and 133.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.95ms. Allocated memory is still 174.1MB. Free memory was 133.2MB in the beginning and 132.4MB in the end (delta: 792.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 197.76ms. Allocated memory is still 174.1MB. Free memory was 132.4MB in the beginning and 140.0MB in the end (delta: -7.6MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1197.57ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 139.1MB in the beginning and 164.1MB in the end (delta: -24.9MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * Witness Printer took 50.49ms. Allocated memory is still 209.7MB. Free memory was 164.1MB in the beginning and 162.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 22 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 344 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 2143 SizeOfPredicates, 3 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: ((0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2))) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2)) || (((x == 0 && ((((((!(0 == x + -2 * (x / 2)) && !(-1 * x + 4294967296 * (x / 4294967296) <= 0)) && !(0 == x + -2 * (x / 2) + -2 + -4294967296 * ((-2 * (x / 2) + x + -2) / 4294967296))) || (!(0 == x + -2 * (x / 2) + -4294967296 * ((-2 * (x / 2) + x) / 4294967296)) && (0 == x + -2 * (x / 2) || -1 * x + 4294967296 * (x / 4294967296) <= 0))) || (((0 == x + -2 * (x / 2) || -1 * x + 4294967296 * (x / 4294967296) <= 0) || 0 == x + -2 * (x / 2) + -2 + -4294967296 * ((-2 * (x / 2) + x + -2) / 4294967296)) && ((!(0 == x + -2 * (x / 2)) && !(-1 * x + 4294967296 * (x / 4294967296) <= 0)) || 0 == x + -2 * (x / 2) + -4294967296 * ((-2 * (x / 2) + x) / 4294967296)))) || ((0 == x + -2 * (x / 2) || -1 * x + 4294967296 * (x / 4294967296) <= 0) && (-2 * (x / 2) + x) / 4294967296 + 1 <= 0)) || ((!(0 == x + -2 * (x / 2)) && !(-1 * x + 4294967296 * (x / 4294967296) <= 0)) && (-2 * (x / 2) + x + -2) / 4294967296 + 1 <= 0))) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2)) RESULT: Ultimate proved your program to be correct! [2023-02-18 16:12:47,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE