./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/vnew1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/loops-crafted-1/vnew1.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 92c9725cc4c9709a9ab81826fb3481ef81541ab6f68244b6727f50e97bc0f0c0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 15:20:45,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 15:20:45,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 15:20:45,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 15:20:45,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 15:20:45,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 15:20:45,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 15:20:45,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 15:20:45,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 15:20:45,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 15:20:45,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 15:20:45,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 15:20:45,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 15:20:45,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 15:20:45,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 15:20:45,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 15:20:45,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 15:20:45,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 15:20:45,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 15:20:45,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 15:20:45,734 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 15:20:45,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 15:20:45,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 15:20:45,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 15:20:45,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 15:20:45,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 15:20:45,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 15:20:45,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 15:20:45,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 15:20:45,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 15:20:45,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 15:20:45,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 15:20:45,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 15:20:45,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 15:20:45,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 15:20:45,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 15:20:45,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 15:20:45,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 15:20:45,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 15:20:45,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 15:20:45,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 15:20:45,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 15:20:45,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 15:20:45,776 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 15:20:45,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 15:20:45,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 15:20:45,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 15:20:45,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 15:20:45,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 15:20:45,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 15:20:45,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 15:20:45,778 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 15:20:45,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 15:20:45,779 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 15:20:45,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 15:20:45,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 15:20:45,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 15:20:45,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 15:20:45,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 15:20:45,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 15:20:45,780 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 15:20:45,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 15:20:45,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 15:20:45,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 15:20:45,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 15:20:45,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 15:20:45,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 15:20:45,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:20:45,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 15:20:45,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 15:20:45,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 15:20:45,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 15:20:45,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 15:20:45,783 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 15:20:45,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 15:20:45,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 15:20:45,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92c9725cc4c9709a9ab81826fb3481ef81541ab6f68244b6727f50e97bc0f0c0 [2022-07-19 15:20:45,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 15:20:45,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 15:20:45,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 15:20:45,994 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 15:20:45,995 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 15:20:45,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/vnew1.c [2022-07-19 15:20:46,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba454a945/33308fff164c40a69be0e432db896749/FLAGeed093804 [2022-07-19 15:20:46,428 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 15:20:46,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/vnew1.c [2022-07-19 15:20:46,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba454a945/33308fff164c40a69be0e432db896749/FLAGeed093804 [2022-07-19 15:20:46,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba454a945/33308fff164c40a69be0e432db896749 [2022-07-19 15:20:46,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 15:20:46,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 15:20:46,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 15:20:46,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 15:20:46,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 15:20:46,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:20:46" (1/1) ... [2022-07-19 15:20:46,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3783bca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:20:46, skipping insertion in model container [2022-07-19 15:20:46,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:20:46" (1/1) ... [2022-07-19 15:20:46,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 15:20:46,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 15:20:47,041 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/loops-crafted-1/vnew1.c[403,416] [2022-07-19 15:20:47,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:20:47,057 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 15:20:47,065 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/loops-crafted-1/vnew1.c[403,416] [2022-07-19 15:20:47,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:20:47,078 INFO L208 MainTranslator]: Completed translation [2022-07-19 15:20:47,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:20:47 WrapperNode [2022-07-19 15:20:47,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 15:20:47,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 15:20:47,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 15:20:47,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 15:20:47,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:20:47" (1/1) ... [2022-07-19 15:20:47,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:20:47" (1/1) ... [2022-07-19 15:20:47,102 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2022-07-19 15:20:47,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 15:20:47,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 15:20:47,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 15:20:47,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 15:20:47,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:20:47" (1/1) ... [2022-07-19 15:20:47,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:20:47" (1/1) ... [2022-07-19 15:20:47,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:20:47" (1/1) ... [2022-07-19 15:20:47,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:20:47" (1/1) ... [2022-07-19 15:20:47,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:20:47" (1/1) ... [2022-07-19 15:20:47,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:20:47" (1/1) ... [2022-07-19 15:20:47,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:20:47" (1/1) ... [2022-07-19 15:20:47,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 15:20:47,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 15:20:47,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 15:20:47,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 15:20:47,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:20:47" (1/1) ... [2022-07-19 15:20:47,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:20:47,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:20:47,148 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) [2022-07-19 15:20:47,167 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 [2022-07-19 15:20:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 15:20:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 15:20:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 15:20:47,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 15:20:47,226 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 15:20:47,227 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 15:20:47,333 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 15:20:47,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 15:20:47,338 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 15:20:47,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:20:47 BoogieIcfgContainer [2022-07-19 15:20:47,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 15:20:47,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 15:20:47,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 15:20:47,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 15:20:47,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 03:20:46" (1/3) ... [2022-07-19 15:20:47,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4523b4af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:20:47, skipping insertion in model container [2022-07-19 15:20:47,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:20:47" (2/3) ... [2022-07-19 15:20:47,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4523b4af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:20:47, skipping insertion in model container [2022-07-19 15:20:47,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:20:47" (3/3) ... [2022-07-19 15:20:47,346 INFO L111 eAbstractionObserver]: Analyzing ICFG vnew1.c [2022-07-19 15:20:47,357 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 15:20:47,358 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 15:20:47,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 15:20:47,404 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1660d701, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@dd6abb2 [2022-07-19 15:20:47,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 15:20:47,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:20:47,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 15:20:47,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:20:47,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:20:47,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:20:47,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:20:47,420 INFO L85 PathProgramCache]: Analyzing trace with hash 185205049, now seen corresponding path program 1 times [2022-07-19 15:20:47,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:20:47,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748489653] [2022-07-19 15:20:47,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:20:47,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:20:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:20:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:20:47,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:20:47,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748489653] [2022-07-19 15:20:47,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748489653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:20:47,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:20:47,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 15:20:47,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643723186] [2022-07-19 15:20:47,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:20:47,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 15:20:47,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:20:47,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 15:20:47,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:20:47,551 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 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 4.0) internal successors, (8), 2 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) [2022-07-19 15:20:47,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:20:47,561 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2022-07-19 15:20:47,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 15:20:47,562 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 8 [2022-07-19 15:20:47,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:20:47,567 INFO L225 Difference]: With dead ends: 24 [2022-07-19 15:20:47,567 INFO L226 Difference]: Without dead ends: 10 [2022-07-19 15:20:47,570 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 [2022-07-19 15:20:47,572 INFO L413 NwaCegarLoop]: 16 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, 16 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 [2022-07-19 15:20:47,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:20:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-19 15:20:47,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-19 15:20:47,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:20:47,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-07-19 15:20:47,596 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2022-07-19 15:20:47,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:20:47,596 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-07-19 15:20:47,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-07-19 15:20:47,597 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-07-19 15:20:47,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 15:20:47,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:20:47,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:20:47,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 15:20:47,598 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:20:47,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:20:47,598 INFO L85 PathProgramCache]: Analyzing trace with hash 181510965, now seen corresponding path program 1 times [2022-07-19 15:20:47,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:20:47,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610661924] [2022-07-19 15:20:47,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:20:47,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:20:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:20:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:20:47,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:20:47,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610661924] [2022-07-19 15:20:47,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610661924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:20:47,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:20:47,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 15:20:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719903517] [2022-07-19 15:20:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:20:47,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 15:20:47,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:20:47,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 15:20:47,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 15:20:47,748 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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) [2022-07-19 15:20:47,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:20:47,829 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-07-19 15:20:47,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 15:20:47,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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 8 [2022-07-19 15:20:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:20:47,830 INFO L225 Difference]: With dead ends: 18 [2022-07-19 15:20:47,830 INFO L226 Difference]: Without dead ends: 16 [2022-07-19 15:20:47,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 15:20:47,831 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:20:47,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 19 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:20:47,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-19 15:20:47,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2022-07-19 15:20:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:20:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-07-19 15:20:47,838 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2022-07-19 15:20:47,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:20:47,838 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-07-19 15:20:47,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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) [2022-07-19 15:20:47,838 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-07-19 15:20:47,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 15:20:47,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:20:47,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:20:47,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 15:20:47,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:20:47,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:20:47,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1383318765, now seen corresponding path program 1 times [2022-07-19 15:20:47,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:20:47,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875272973] [2022-07-19 15:20:47,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:20:47,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:20:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:20:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:20:48,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:20:48,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875272973] [2022-07-19 15:20:48,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875272973] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 15:20:48,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120536511] [2022-07-19 15:20:48,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:20:48,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:20:48,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:20:48,033 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) [2022-07-19 15:20:48,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process