./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.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/nla-digbench-scaling/freire1_unwindbound1.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 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 15:54:52,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 15:54:52,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 15:54:52,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 15:54:52,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 15:54:52,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 15:54:52,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 15:54:52,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 15:54:52,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 15:54:52,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 15:54:52,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 15:54:52,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 15:54:52,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 15:54:52,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 15:54:52,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 15:54:52,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 15:54:52,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 15:54:52,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 15:54:52,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 15:54:52,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 15:54:52,894 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 15:54:52,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 15:54:52,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 15:54:52,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 15:54:52,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 15:54:52,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 15:54:52,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 15:54:52,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 15:54:52,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 15:54:52,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 15:54:52,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 15:54:52,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 15:54:52,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 15:54:52,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 15:54:52,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 15:54:52,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 15:54:52,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 15:54:52,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 15:54:52,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 15:54:52,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 15:54:52,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 15:54:52,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 15:54:52,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 15:54:52,926 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 15:54:52,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 15:54:52,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 15:54:52,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 15:54:52,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 15:54:52,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 15:54:52,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 15:54:52,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 15:54:52,933 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 15:54:52,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 15:54:52,934 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 15:54:52,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 15:54:52,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 15:54:52,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 15:54:52,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 15:54:52,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 15:54:52,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 15:54:52,935 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 15:54:52,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 15:54:52,936 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 15:54:52,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 15:54:52,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 15:54:52,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 15:54:52,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 15:54:52,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:54:52,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 15:54:52,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 15:54:52,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 15:54:52,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 15:54:52,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 15:54:52,938 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 15:54:52,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 15:54:52,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 15:54:52,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec [2022-07-19 15:54:53,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 15:54:53,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 15:54:53,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 15:54:53,122 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 15:54:53,124 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 15:54:53,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2022-07-19 15:54:53,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f8accd58/facc2f7aead14e60983ca50a84c6f1fb/FLAG1cd9342d2 [2022-07-19 15:54:53,484 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 15:54:53,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2022-07-19 15:54:53,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f8accd58/facc2f7aead14e60983ca50a84c6f1fb/FLAG1cd9342d2 [2022-07-19 15:54:53,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f8accd58/facc2f7aead14e60983ca50a84c6f1fb [2022-07-19 15:54:53,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 15:54:53,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 15:54:53,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 15:54:53,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 15:54:53,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 15:54:53,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:54:53" (1/1) ... [2022-07-19 15:54:53,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c38de0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:53, skipping insertion in model container [2022-07-19 15:54:53,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:54:53" (1/1) ... [2022-07-19 15:54:53,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 15:54:53,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 15:54:54,058 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/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2022-07-19 15:54:54,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:54:54,078 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 15:54:54,088 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/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2022-07-19 15:54:54,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:54:54,103 INFO L208 MainTranslator]: Completed translation [2022-07-19 15:54:54,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:54 WrapperNode [2022-07-19 15:54:54,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 15:54:54,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 15:54:54,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 15:54:54,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 15:54:54,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:54" (1/1) ... [2022-07-19 15:54:54,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:54" (1/1) ... [2022-07-19 15:54:54,122 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2022-07-19 15:54:54,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 15:54:54,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 15:54:54,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 15:54:54,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 15:54:54,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:54" (1/1) ... [2022-07-19 15:54:54,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:54" (1/1) ... [2022-07-19 15:54:54,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:54" (1/1) ... [2022-07-19 15:54:54,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:54" (1/1) ... [2022-07-19 15:54:54,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:54" (1/1) ... [2022-07-19 15:54:54,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:54" (1/1) ... [2022-07-19 15:54:54,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:54" (1/1) ... [2022-07-19 15:54:54,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 15:54:54,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 15:54:54,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 15:54:54,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 15:54:54,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:54" (1/1) ... [2022-07-19 15:54:54,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:54:54,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:54:54,159 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 15:54:54,165 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 15:54:54,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 15:54:54,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 15:54:54,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 15:54:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 15:54:54,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 15:54:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 15:54:54,222 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 15:54:54,223 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 15:54:54,292 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 15:54:54,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 15:54:54,296 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 15:54:54,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:54:54 BoogieIcfgContainer [2022-07-19 15:54:54,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 15:54:54,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 15:54:54,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 15:54:54,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 15:54:54,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 03:54:53" (1/3) ... [2022-07-19 15:54:54,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e95eba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:54:54, skipping insertion in model container [2022-07-19 15:54:54,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:54" (2/3) ... [2022-07-19 15:54:54,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e95eba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:54:54, skipping insertion in model container [2022-07-19 15:54:54,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:54:54" (3/3) ... [2022-07-19 15:54:54,302 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2022-07-19 15:54:54,311 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 15:54:54,311 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 15:54:54,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 15:54:54,348 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@31379873, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7bf4782d [2022-07-19 15:54:54,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 15:54:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 15:54:54,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 15:54:54,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:54:54,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:54:54,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:54:54,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:54:54,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2022-07-19 15:54:54,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:54:54,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395105542] [2022-07-19 15:54:54,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:54:54,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:54:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:54:54,442 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 15:54:54,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:54:54,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395105542] [2022-07-19 15:54:54,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395105542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:54:54,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:54:54,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 15:54:54,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752971262] [2022-07-19 15:54:54,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:54:54,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 15:54:54,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:54:54,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 15:54:54,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:54:54,467 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:54:54,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:54:54,480 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-07-19 15:54:54,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 15:54:54,482 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-19 15:54:54,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:54:54,487 INFO L225 Difference]: With dead ends: 32 [2022-07-19 15:54:54,487 INFO L226 Difference]: Without dead ends: 13 [2022-07-19 15:54:54,489 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 15:54:54,491 INFO L413 NwaCegarLoop]: 19 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, 19 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 15:54:54,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:54:54,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-19 15:54:54,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-19 15:54:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 15:54:54,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-19 15:54:54,515 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2022-07-19 15:54:54,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:54:54,515 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-19 15:54:54,515 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:54:54,515 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-07-19 15:54:54,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 15:54:54,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:54:54,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:54:54,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 15:54:54,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:54:54,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:54:54,517 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2022-07-19 15:54:54,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:54:54,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743914483] [2022-07-19 15:54:54,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:54:54,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:54:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:54:54,605 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 15:54:54,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:54:54,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743914483] [2022-07-19 15:54:54,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743914483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:54:54,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:54:54,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 15:54:54,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202583389] [2022-07-19 15:54:54,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:54:54,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 15:54:54,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:54:54,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 15:54:54,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 15:54:54,608 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:54:54,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:54:54,623 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-07-19 15:54:54,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 15:54:54,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 15:54:54,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:54:54,632 INFO L225 Difference]: With dead ends: 22 [2022-07-19 15:54:54,632 INFO L226 Difference]: Without dead ends: 15 [2022-07-19 15:54:54,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 15:54:54,634 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:54:54,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:54:54,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-19 15:54:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-19 15:54:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 15:54:54,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-07-19 15:54:54,644 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2022-07-19 15:54:54,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:54:54,644 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-07-19 15:54:54,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:54:54,645 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-07-19 15:54:54,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 15:54:54,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:54:54,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:54:54,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 15:54:54,646 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:54:54,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:54:54,646 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2022-07-19 15:54:54,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:54:54,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614715999] [2022-07-19 15:54:54,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:54:54,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:54:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 15:54:54,655 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 15:54:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 15:54:54,676 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 15:54:54,677 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 15:54:54,677 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 15:54:54,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 15:54:54,681 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-19 15:54:54,683 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 15:54:54,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 03:54:54 BoogieIcfgContainer [2022-07-19 15:54:54,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 15:54:54,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 15:54:54,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 15:54:54,697 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 15:54:54,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:54:54" (3/4) ... [2022-07-19 15:54:54,700 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 15:54:54,701 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 15:54:54,701 INFO L158 Benchmark]: Toolchain (without parser) took 782.48ms. Allocated memory is still 123.7MB. Free memory was 87.2MB in the beginning and 57.5MB in the end (delta: 29.8MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2022-07-19 15:54:54,701 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 123.7MB. Free memory was 94.3MB in the beginning and 94.3MB in the end (delta: 29.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:54:54,702 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.26ms. Allocated memory is still 123.7MB. Free memory was 87.0MB in the beginning and 97.5MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 15:54:54,705 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.16ms. Allocated memory is still 123.7MB. Free memory was 97.5MB in the beginning and 96.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:54:54,706 INFO L158 Benchmark]: Boogie Preprocessor took 10.72ms. Allocated memory is still 123.7MB. Free memory was 96.1MB in the beginning and 95.4MB in the end (delta: 640.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:54:54,710 INFO L158 Benchmark]: RCFGBuilder took 163.28ms. Allocated memory is still 123.7MB. Free memory was 95.2MB in the beginning and 86.2MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 15:54:54,711 INFO L158 Benchmark]: TraceAbstraction took 398.52ms. Allocated memory is still 123.7MB. Free memory was 85.6MB in the beginning and 57.7MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-07-19 15:54:54,711 INFO L158 Benchmark]: Witness Printer took 3.66ms. Allocated memory is still 123.7MB. Free memory was 57.7MB in the beginning and 57.5MB in the end (delta: 214.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:54:54,726 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 123.7MB. Free memory was 94.3MB in the beginning and 94.3MB in the end (delta: 29.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.26ms. Allocated memory is still 123.7MB. Free memory was 87.0MB in the beginning and 97.5MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.16ms. Allocated memory is still 123.7MB. Free memory was 97.5MB in the beginning and 96.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 10.72ms. Allocated memory is still 123.7MB. Free memory was 96.1MB in the beginning and 95.4MB in the end (delta: 640.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 163.28ms. Allocated memory is still 123.7MB. Free memory was 95.2MB in the beginning and 86.2MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 398.52ms. Allocated memory is still 123.7MB. Free memory was 85.6MB in the beginning and 57.7MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 3.66ms. Allocated memory is still 123.7MB. Free memory was 57.7MB in the beginning and 57.5MB in the end (delta: 214.8kB). There was no memory consumed. 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 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0, r=0] [L32] EXPR counter++ VAL [counter=1, counter++=0, r=0] [L32] COND TRUE counter++<1 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0, counter=1] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-19 15:54:54,766 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/nla-digbench-scaling/freire1_unwindbound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 15:54:56,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 15:54:56,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 15:54:56,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 15:54:56,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 15:54:56,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 15:54:56,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 15:54:56,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 15:54:56,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 15:54:56,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 15:54:56,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 15:54:56,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 15:54:56,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 15:54:56,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 15:54:56,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 15:54:56,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 15:54:56,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 15:54:56,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 15:54:56,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 15:54:56,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 15:54:56,396 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 15:54:56,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 15:54:56,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 15:54:56,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 15:54:56,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 15:54:56,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 15:54:56,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 15:54:56,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 15:54:56,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 15:54:56,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 15:54:56,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 15:54:56,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 15:54:56,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 15:54:56,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 15:54:56,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 15:54:56,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 15:54:56,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 15:54:56,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 15:54:56,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 15:54:56,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 15:54:56,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 15:54:56,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 15:54:56,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 15:54:56,445 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 15:54:56,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 15:54:56,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 15:54:56,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 15:54:56,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 15:54:56,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 15:54:56,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 15:54:56,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 15:54:56,448 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 15:54:56,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 15:54:56,449 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 15:54:56,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 15:54:56,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 15:54:56,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 15:54:56,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 15:54:56,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 15:54:56,450 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 15:54:56,450 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 15:54:56,450 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 15:54:56,450 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 15:54:56,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 15:54:56,450 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 15:54:56,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 15:54:56,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 15:54:56,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 15:54:56,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 15:54:56,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:54:56,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 15:54:56,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 15:54:56,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 15:54:56,452 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 15:54:56,452 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 15:54:56,452 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 15:54:56,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 15:54:56,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 15:54:56,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 15:54:56,453 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec [2022-07-19 15:54:56,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 15:54:56,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 15:54:56,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 15:54:56,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 15:54:56,711 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 15:54:56,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2022-07-19 15:54:56,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec1a75fe7/a68b1b88a5be444cbd4cee8cd405f89e/FLAGc474d2d76 [2022-07-19 15:54:57,097 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 15:54:57,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2022-07-19 15:54:57,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec1a75fe7/a68b1b88a5be444cbd4cee8cd405f89e/FLAGc474d2d76 [2022-07-19 15:54:57,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec1a75fe7/a68b1b88a5be444cbd4cee8cd405f89e [2022-07-19 15:54:57,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 15:54:57,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 15:54:57,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 15:54:57,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 15:54:57,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 15:54:57,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:54:57" (1/1) ... [2022-07-19 15:54:57,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb004cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:57, skipping insertion in model container [2022-07-19 15:54:57,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:54:57" (1/1) ... [2022-07-19 15:54:57,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 15:54:57,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 15:54:57,658 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/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2022-07-19 15:54:57,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:54:57,673 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 15:54:57,708 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/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2022-07-19 15:54:57,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:54:57,734 INFO L208 MainTranslator]: Completed translation [2022-07-19 15:54:57,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:57 WrapperNode [2022-07-19 15:54:57,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 15:54:57,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 15:54:57,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 15:54:57,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 15:54:57,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:57" (1/1) ... [2022-07-19 15:54:57,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:57" (1/1) ... [2022-07-19 15:54:57,764 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2022-07-19 15:54:57,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 15:54:57,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 15:54:57,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 15:54:57,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 15:54:57,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:57" (1/1) ... [2022-07-19 15:54:57,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:57" (1/1) ... [2022-07-19 15:54:57,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:57" (1/1) ... [2022-07-19 15:54:57,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:57" (1/1) ... [2022-07-19 15:54:57,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:57" (1/1) ... [2022-07-19 15:54:57,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:57" (1/1) ... [2022-07-19 15:54:57,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:57" (1/1) ... [2022-07-19 15:54:57,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 15:54:57,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 15:54:57,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 15:54:57,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 15:54:57,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:57" (1/1) ... [2022-07-19 15:54:57,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:54:57,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:54:57,808 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 15:54:57,832 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 15:54:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 15:54:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 15:54:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 15:54:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 15:54:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 15:54:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 15:54:57,891 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 15:54:57,893 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 15:54:58,456 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 15:54:58,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 15:54:58,465 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 15:54:58,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:54:58 BoogieIcfgContainer [2022-07-19 15:54:58,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 15:54:58,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 15:54:58,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 15:54:58,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 15:54:58,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 03:54:57" (1/3) ... [2022-07-19 15:54:58,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8a9092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:54:58, skipping insertion in model container [2022-07-19 15:54:58,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:54:57" (2/3) ... [2022-07-19 15:54:58,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8a9092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:54:58, skipping insertion in model container [2022-07-19 15:54:58,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:54:58" (3/3) ... [2022-07-19 15:54:58,472 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2022-07-19 15:54:58,481 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 15:54:58,481 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 15:54:58,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 15:54:58,520 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@436942aa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1b0d8e35 [2022-07-19 15:54:58,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 15:54:58,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 15:54:58,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 15:54:58,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:54:58,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:54:58,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:54:58,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:54:58,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2022-07-19 15:54:58,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 15:54:58,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299261784] [2022-07-19 15:54:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:54:58,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 15:54:58,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 15:54:58,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 15:54:58,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 15:54:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:54:58,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 15:54:58,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:54:58,853 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 15:54:58,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:54:58,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 15:54:58,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299261784] [2022-07-19 15:54:58,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299261784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:54:58,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:54:58,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 15:54:58,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791527871] [2022-07-19 15:54:58,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:54:58,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 15:54:58,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 15:54:58,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 15:54:58,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:54:58,883 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:54:58,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:54:58,897 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-07-19 15:54:58,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 15:54:58,900 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-19 15:54:58,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:54:58,911 INFO L225 Difference]: With dead ends: 32 [2022-07-19 15:54:58,911 INFO L226 Difference]: Without dead ends: 13 [2022-07-19 15:54:58,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 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 15:54:58,915 INFO L413 NwaCegarLoop]: 19 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, 19 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 15:54:58,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:54:58,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-19 15:54:58,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-19 15:54:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 15:54:58,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-19 15:54:58,937 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2022-07-19 15:54:58,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:54:58,937 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-19 15:54:58,937 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:54:58,937 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-07-19 15:54:58,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 15:54:58,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:54:58,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:54:58,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 15:54:59,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 15:54:59,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:54:59,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:54:59,140 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2022-07-19 15:54:59,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 15:54:59,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094310136] [2022-07-19 15:54:59,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:54:59,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 15:54:59,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 15:54:59,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 15:54:59,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 15:54:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:54:59,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 15:54:59,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:54:59,435 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 15:54:59,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:54:59,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 15:54:59,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094310136] [2022-07-19 15:54:59,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094310136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:54:59,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:54:59,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 15:54:59,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730944473] [2022-07-19 15:54:59,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:54:59,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 15:54:59,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 15:54:59,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 15:54:59,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 15:54:59,437 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:55:00,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:55:00,130 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-07-19 15:55:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 15:55:00,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 15:55:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:55:00,131 INFO L225 Difference]: With dead ends: 22 [2022-07-19 15:55:00,131 INFO L226 Difference]: Without dead ends: 15 [2022-07-19 15:55:00,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 15:55:00,132 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 15:55:00,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 15:55:00,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-19 15:55:00,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-19 15:55:00,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 15:55:00,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-07-19 15:55:00,135 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2022-07-19 15:55:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:55:00,135 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-07-19 15:55:00,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:55:00,136 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-07-19 15:55:00,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 15:55:00,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:55:00,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:55:00,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-19 15:55:00,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 15:55:00,350 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:55:00,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:55:00,351 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2022-07-19 15:55:00,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 15:55:00,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942950830] [2022-07-19 15:55:00,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:55:00,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 15:55:00,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 15:55:00,352 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 15:55:00,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 15:55:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:55:02,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 15:55:02,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:55:19,490 WARN L833 $PredicateComparison]: unable to prove that (or (= |c___VERIFIER_assert_#in~cond| (_ bv1 32)) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from false [2022-07-19 15:55:19,954 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 15:55:19,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:55:19,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 15:55:19,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942950830] [2022-07-19 15:55:19,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942950830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:55:19,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:55:19,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 15:55:19,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667625658] [2022-07-19 15:55:19,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:55:19,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 15:55:19,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 15:55:19,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 15:55:19,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2022-07-19 15:55:19,956 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:55:23,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:55:25,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:55:27,289 WARN L833 $PredicateComparison]: unable to prove that (and (or (= |c___VERIFIER_assert_#in~cond| (_ bv1 32)) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-19 15:55:30,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:55:32,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:55:37,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:55:39,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 15:55:39,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:55:39,734 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-07-19 15:55:39,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 15:55:39,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 15:55:39,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:55:39,745 INFO L225 Difference]: With dead ends: 27 [2022-07-19 15:55:39,745 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 15:55:39,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=16, Invalid=20, Unknown=2, NotChecked=18, Total=56 [2022-07-19 15:55:39,746 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:55:39,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 45 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 6 Unknown, 15 Unchecked, 16.0s Time] [2022-07-19 15:55:39,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 15:55:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 15:55:39,748 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) [2022-07-19 15:55:39,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 15:55:39,748 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2022-07-19 15:55:39,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:55:39,748 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 15:55:39,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:55:39,749 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 15:55:39,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 15:55:39,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 15:55:39,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-19 15:55:39,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 15:55:39,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 15:55:40,152 INFO L902 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: true [2022-07-19 15:55:40,153 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 15:55:40,153 INFO L899 garLoopResultBuilder]: For program point L33-1(lines 32 39) no Hoare annotation was computed. [2022-07-19 15:55:40,153 INFO L902 garLoopResultBuilder]: At program point L42(lines 25 43) the Hoare annotation is: true [2022-07-19 15:55:40,153 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 15:55:40,153 INFO L899 garLoopResultBuilder]: For program point L32-1(lines 32 39) no Hoare annotation was computed. [2022-07-19 15:55:40,154 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 15:55:40,154 INFO L902 garLoopResultBuilder]: At program point L32-3(lines 32 39) the Hoare annotation is: true [2022-07-19 15:55:40,154 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 15:55:40,154 INFO L902 garLoopResultBuilder]: At program point L32-4(lines 32 39) the Hoare annotation is: true [2022-07-19 15:55:40,154 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-07-19 15:55:40,154 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 20) no Hoare annotation was computed. [2022-07-19 15:55:40,154 INFO L899 garLoopResultBuilder]: For program point L17-2(lines 16 22) no Hoare annotation was computed. [2022-07-19 15:55:40,155 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 16 22) the Hoare annotation is: true [2022-07-19 15:55:40,155 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 16 22) no Hoare annotation was computed. [2022-07-19 15:55:40,155 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-07-19 15:55:40,155 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 19) no Hoare annotation was computed. [2022-07-19 15:55:40,157 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-19 15:55:40,158 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 15:55:40,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 03:55:40 BoogieIcfgContainer [2022-07-19 15:55:40,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 15:55:40,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 15:55:40,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 15:55:40,163 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 15:55:40,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:54:58" (3/4) ... [2022-07-19 15:55:40,165 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 15:55:40,169 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-19 15:55:40,171 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-19 15:55:40,171 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-19 15:55:40,171 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 15:55:40,171 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 15:55:40,190 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 15:55:40,190 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 15:55:40,191 INFO L158 Benchmark]: Toolchain (without parser) took 42643.25ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 24.2MB in the beginning and 26.8MB in the end (delta: -2.6MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2022-07-19 15:55:40,191 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 48.2MB. Free memory was 30.6MB in the beginning and 30.6MB in the end (delta: 36.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:55:40,191 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.09ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 24.1MB in the beginning and 41.9MB in the end (delta: -17.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 15:55:40,192 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.78ms. Allocated memory is still 58.7MB. Free memory was 41.9MB in the beginning and 40.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:55:40,192 INFO L158 Benchmark]: Boogie Preprocessor took 21.62ms. Allocated memory is still 58.7MB. Free memory was 40.3MB in the beginning and 39.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:55:40,192 INFO L158 Benchmark]: RCFGBuilder took 679.93ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 41.7MB in the end (delta: -2.6MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-07-19 15:55:40,192 INFO L158 Benchmark]: TraceAbstraction took 41694.31ms. Allocated memory is still 58.7MB. Free memory was 41.2MB in the beginning and 29.5MB in the end (delta: 11.7MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2022-07-19 15:55:40,193 INFO L158 Benchmark]: Witness Printer took 27.62ms. Allocated memory is still 58.7MB. Free memory was 29.2MB in the beginning and 26.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:55:40,194 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 48.2MB. Free memory was 30.6MB in the beginning and 30.6MB in the end (delta: 36.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.09ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 24.1MB in the beginning and 41.9MB in the end (delta: -17.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.78ms. Allocated memory is still 58.7MB. Free memory was 41.9MB in the beginning and 40.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.62ms. Allocated memory is still 58.7MB. Free memory was 40.3MB in the beginning and 39.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 679.93ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 41.7MB in the end (delta: -2.6MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * TraceAbstraction took 41694.31ms. Allocated memory is still 58.7MB. Free memory was 41.2MB in the beginning and 29.5MB in the end (delta: 11.7MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Witness Printer took 27.62ms. Allocated memory is still 58.7MB. Free memory was 29.2MB in the beginning and 26.8MB in the end (delta: 2.4MB). 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: 19]: 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 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 41.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 20.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 16.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 99 SdHoareTripleChecker+Invalid, 16.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 15 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 45 mSDtfsCounter, 24 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 5 LocationsWithAnnotation, 11 PreInvPairs, 18 NumberOfFragments, 5 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 85 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 17.8s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 1 QuantifiedInterpolants, 113 SizeOfPredicates, 3 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-19 15:55:40,293 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