./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 f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-f4b24e3 [2022-07-13 16:29:27,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 16:29:27,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 16:29:28,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 16:29:28,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 16:29:28,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 16:29:28,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 16:29:28,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 16:29:28,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 16:29:28,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 16:29:28,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 16:29:28,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 16:29:28,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 16:29:28,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 16:29:28,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 16:29:28,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 16:29:28,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 16:29:28,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 16:29:28,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 16:29:28,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 16:29:28,056 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 16:29:28,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 16:29:28,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 16:29:28,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 16:29:28,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 16:29:28,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 16:29:28,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 16:29:28,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 16:29:28,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 16:29:28,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 16:29:28,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 16:29:28,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 16:29:28,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 16:29:28,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 16:29:28,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 16:29:28,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 16:29:28,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 16:29:28,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 16:29:28,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 16:29:28,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 16:29:28,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 16:29:28,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 16:29:28,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 16:29:28,109 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 16:29:28,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 16:29:28,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 16:29:28,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 16:29:28,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 16:29:28,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 16:29:28,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 16:29:28,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 16:29:28,112 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 16:29:28,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 16:29:28,114 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 16:29:28,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 16:29:28,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 16:29:28,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 16:29:28,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 16:29:28,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 16:29:28,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 16:29:28,115 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 16:29:28,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 16:29:28,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 16:29:28,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 16:29:28,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 16:29:28,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 16:29:28,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 16:29:28,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 16:29:28,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 16:29:28,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 16:29:28,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 16:29:28,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 16:29:28,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 16:29:28,118 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 16:29:28,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 16:29:28,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 16:29:28,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec [2022-07-13 16:29:28,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 16:29:28,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 16:29:28,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 16:29:28,373 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 16:29:28,374 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 16:29:28,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2022-07-13 16:29:28,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/440a35fb0/1b771578bb9c4ac4adf00968d76bdfc9/FLAG99f19f4d5 [2022-07-13 16:29:28,801 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 16:29:28,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2022-07-13 16:29:28,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/440a35fb0/1b771578bb9c4ac4adf00968d76bdfc9/FLAG99f19f4d5 [2022-07-13 16:29:28,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/440a35fb0/1b771578bb9c4ac4adf00968d76bdfc9 [2022-07-13 16:29:28,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 16:29:28,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 16:29:28,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 16:29:28,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 16:29:28,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 16:29:28,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 04:29:28" (1/1) ... [2022-07-13 16:29:28,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a7de46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:28, skipping insertion in model container [2022-07-13 16:29:28,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 04:29:28" (1/1) ... [2022-07-13 16:29:28,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 16:29:28,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 16:29:28,979 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] [2022-07-13 16:29:28,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 16:29:29,003 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 16:29:29,011 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] [2022-07-13 16:29:29,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 16:29:29,024 INFO L208 MainTranslator]: Completed translation [2022-07-13 16:29:29,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:29 WrapperNode [2022-07-13 16:29:29,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 16:29:29,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 16:29:29,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 16:29:29,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 16:29:29,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:29" (1/1) ... [2022-07-13 16:29:29,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:29" (1/1) ... [2022-07-13 16:29:29,054 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2022-07-13 16:29:29,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 16:29:29,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 16:29:29,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 16:29:29,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 16:29:29,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:29" (1/1) ... [2022-07-13 16:29:29,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:29" (1/1) ... [2022-07-13 16:29:29,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:29" (1/1) ... [2022-07-13 16:29:29,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:29" (1/1) ... [2022-07-13 16:29:29,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:29" (1/1) ... [2022-07-13 16:29:29,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:29" (1/1) ... [2022-07-13 16:29:29,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:29" (1/1) ... [2022-07-13 16:29:29,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 16:29:29,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 16:29:29,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 16:29:29,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 16:29:29,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:29" (1/1) ... [2022-07-13 16:29:29,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 16:29:29,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:29:29,100 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) [2022-07-13 16:29:29,107 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 [2022-07-13 16:29:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 16:29:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 16:29:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 16:29:29,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 16:29:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 16:29:29,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 16:29:29,176 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 16:29:29,177 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 16:29:29,263 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 16:29:29,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 16:29:29,268 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 16:29:29,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:29:29 BoogieIcfgContainer [2022-07-13 16:29:29,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 16:29:29,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 16:29:29,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 16:29:29,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 16:29:29,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 04:29:28" (1/3) ... [2022-07-13 16:29:29,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7c4b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 04:29:29, skipping insertion in model container [2022-07-13 16:29:29,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:29" (2/3) ... [2022-07-13 16:29:29,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7c4b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 04:29:29, skipping insertion in model container [2022-07-13 16:29:29,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:29:29" (3/3) ... [2022-07-13 16:29:29,277 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2022-07-13 16:29:29,290 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 16:29:29,290 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 16:29:29,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 16:29:29,358 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@223535ae, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@75ec3c61 [2022-07-13 16:29:29,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 16:29:29,363 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) [2022-07-13 16:29:29,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 16:29:29,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:29:29,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:29:29,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:29:29,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:29:29,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2022-07-13 16:29:29,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:29:29,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358917703] [2022-07-13 16:29:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:29:29,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:29:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:29:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 16:29:29,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:29:29,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358917703] [2022-07-13 16:29:29,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358917703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 16:29:29,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 16:29:29,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 16:29:29,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220805715] [2022-07-13 16:29:29,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 16:29:29,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 16:29:29,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:29:29,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 16:29:29,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 16:29:29,564 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) [2022-07-13 16:29:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:29:29,578 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-07-13 16:29:29,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 16:29:29,580 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 [2022-07-13 16:29:29,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:29:29,589 INFO L225 Difference]: With dead ends: 32 [2022-07-13 16:29:29,589 INFO L226 Difference]: Without dead ends: 13 [2022-07-13 16:29:29,592 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 [2022-07-13 16:29:29,595 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 [2022-07-13 16:29:29,596 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] [2022-07-13 16:29:29,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-13 16:29:29,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-13 16:29:29,620 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) [2022-07-13 16:29:29,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-13 16:29:29,622 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2022-07-13 16:29:29,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:29:29,622 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-13 16:29:29,622 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) [2022-07-13 16:29:29,622 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-07-13 16:29:29,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 16:29:29,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:29:29,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:29:29,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 16:29:29,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:29:29,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:29:29,624 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2022-07-13 16:29:29,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:29:29,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220903651] [2022-07-13 16:29:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:29:29,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:29:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:29:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 16:29:29,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:29:29,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220903651] [2022-07-13 16:29:29,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220903651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 16:29:29,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 16:29:29,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 16:29:29,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004843649] [2022-07-13 16:29:29,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 16:29:29,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 16:29:29,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:29:29,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 16:29:29,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 16:29:29,694 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) [2022-07-13 16:29:29,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:29:29,726 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-07-13 16:29:29,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 16:29:29,726 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 [2022-07-13 16:29:29,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:29:29,727 INFO L225 Difference]: With dead ends: 22 [2022-07-13 16:29:29,727 INFO L226 Difference]: Without dead ends: 15 [2022-07-13 16:29:29,727 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 [2022-07-13 16:29:29,728 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 [2022-07-13 16:29:29,729 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] [2022-07-13 16:29:29,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-13 16:29:29,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-13 16:29:29,732 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) [2022-07-13 16:29:29,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-07-13 16:29:29,733 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2022-07-13 16:29:29,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:29:29,733 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-07-13 16:29:29,733 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) [2022-07-13 16:29:29,733 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-07-13 16:29:29,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 16:29:29,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:29:29,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:29:29,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 16:29:29,734 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:29:29,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:29:29,735 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2022-07-13 16:29:29,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:29:29,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840017617] [2022-07-13 16:29:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:29:29,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:29:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 16:29:29,757 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 16:29:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 16:29:29,780 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 16:29:29,781 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 16:29:29,782 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 16:29:29,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 16:29:29,786 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-13 16:29:29,790 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 16:29:29,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 04:29:29 BoogieIcfgContainer [2022-07-13 16:29:29,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 16:29:29,820 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 16:29:29,820 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 16:29:29,820 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 16:29:29,821 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:29:29" (3/4) ... [2022-07-13 16:29:29,824 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 16:29:29,824 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 16:29:29,824 INFO L158 Benchmark]: Toolchain (without parser) took 1002.51ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 46.2MB in the beginning and 64.5MB in the end (delta: -18.3MB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. [2022-07-13 16:29:29,825 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 79.7MB. Free memory was 57.8MB in the beginning and 57.8MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 16:29:29,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.97ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 46.0MB in the beginning and 79.4MB in the end (delta: -33.4MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-07-13 16:29:29,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.80ms. Allocated memory is still 102.8MB. Free memory was 79.4MB in the beginning and 78.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 16:29:29,831 INFO L158 Benchmark]: Boogie Preprocessor took 14.66ms. Allocated memory is still 102.8MB. Free memory was 78.1MB in the beginning and 76.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 16:29:29,832 INFO L158 Benchmark]: RCFGBuilder took 199.91ms. Allocated memory is still 102.8MB. Free memory was 76.9MB in the beginning and 68.2MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 16:29:29,833 INFO L158 Benchmark]: TraceAbstraction took 547.16ms. Allocated memory is still 102.8MB. Free memory was 67.6MB in the beginning and 64.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. [2022-07-13 16:29:29,833 INFO L158 Benchmark]: Witness Printer took 3.96ms. Allocated memory is still 102.8MB. Free memory was 64.8MB in the beginning and 64.5MB in the end (delta: 392.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 16:29:29,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 79.7MB. Free memory was 57.8MB in the beginning and 57.8MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 201.97ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 46.0MB in the beginning and 79.4MB in the end (delta: -33.4MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.80ms. Allocated memory is still 102.8MB. Free memory was 79.4MB in the beginning and 78.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.66ms. Allocated memory is still 102.8MB. Free memory was 78.1MB in the beginning and 76.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 199.91ms. Allocated memory is still 102.8MB. Free memory was 76.9MB in the beginning and 68.2MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 547.16ms. Allocated memory is still 102.8MB. Free memory was 67.6MB in the beginning and 64.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. * Witness Printer took 3.96ms. Allocated memory is still 102.8MB. Free memory was 64.8MB in the beginning and 64.5MB in the end (delta: 392.4kB). 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: 0.4s, 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 [2022-07-13 16:29:29,871 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-?-f4b24e3 [2022-07-13 16:29:31,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 16:29:31,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 16:29:31,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 16:29:31,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 16:29:31,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 16:29:31,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 16:29:31,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 16:29:31,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 16:29:31,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 16:29:31,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 16:29:31,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 16:29:31,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 16:29:31,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 16:29:31,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 16:29:31,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 16:29:31,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 16:29:31,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 16:29:31,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 16:29:31,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 16:29:31,934 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 16:29:31,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 16:29:31,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 16:29:31,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 16:29:31,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 16:29:31,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 16:29:31,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 16:29:31,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 16:29:31,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 16:29:31,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 16:29:31,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 16:29:31,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 16:29:31,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 16:29:31,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 16:29:31,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 16:29:31,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 16:29:31,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 16:29:31,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 16:29:31,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 16:29:31,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 16:29:31,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 16:29:31,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 16:29:31,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 16:29:31,996 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 16:29:31,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 16:29:31,997 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 16:29:31,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 16:29:31,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 16:29:31,998 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 16:29:31,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 16:29:31,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 16:29:32,000 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 16:29:32,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 16:29:32,001 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 16:29:32,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 16:29:32,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 16:29:32,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 16:29:32,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 16:29:32,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 16:29:32,002 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 16:29:32,003 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 16:29:32,003 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 16:29:32,003 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 16:29:32,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 16:29:32,003 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 16:29:32,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 16:29:32,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 16:29:32,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 16:29:32,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 16:29:32,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 16:29:32,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 16:29:32,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 16:29:32,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 16:29:32,005 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 16:29:32,005 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 16:29:32,005 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 16:29:32,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 16:29:32,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 16:29:32,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 16:29:32,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec [2022-07-13 16:29:32,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 16:29:32,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 16:29:32,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 16:29:32,350 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 16:29:32,350 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 16:29:32,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2022-07-13 16:29:32,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f211b3c38/add9e8546c294d81a92a4dacc1469731/FLAGf15326073 [2022-07-13 16:29:32,798 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 16:29:32,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2022-07-13 16:29:32,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f211b3c38/add9e8546c294d81a92a4dacc1469731/FLAGf15326073 [2022-07-13 16:29:32,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f211b3c38/add9e8546c294d81a92a4dacc1469731 [2022-07-13 16:29:32,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 16:29:32,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 16:29:32,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 16:29:32,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 16:29:32,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 16:29:32,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 04:29:32" (1/1) ... [2022-07-13 16:29:32,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2447e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:32, skipping insertion in model container [2022-07-13 16:29:32,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 04:29:32" (1/1) ... [2022-07-13 16:29:32,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 16:29:32,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 16:29:32,976 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] [2022-07-13 16:29:32,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 16:29:32,999 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 16:29:33,039 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] [2022-07-13 16:29:33,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 16:29:33,056 INFO L208 MainTranslator]: Completed translation [2022-07-13 16:29:33,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:33 WrapperNode [2022-07-13 16:29:33,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 16:29:33,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 16:29:33,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 16:29:33,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 16:29:33,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:33" (1/1) ... [2022-07-13 16:29:33,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:33" (1/1) ... [2022-07-13 16:29:33,086 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2022-07-13 16:29:33,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 16:29:33,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 16:29:33,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 16:29:33,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 16:29:33,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:33" (1/1) ... [2022-07-13 16:29:33,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:33" (1/1) ... [2022-07-13 16:29:33,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:33" (1/1) ... [2022-07-13 16:29:33,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:33" (1/1) ... [2022-07-13 16:29:33,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:33" (1/1) ... [2022-07-13 16:29:33,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:33" (1/1) ... [2022-07-13 16:29:33,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:33" (1/1) ... [2022-07-13 16:29:33,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 16:29:33,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 16:29:33,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 16:29:33,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 16:29:33,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:33" (1/1) ... [2022-07-13 16:29:33,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 16:29:33,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:29:33,161 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) [2022-07-13 16:29:33,185 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 [2022-07-13 16:29:33,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 16:29:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 16:29:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 16:29:33,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 16:29:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 16:29:33,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 16:29:33,259 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 16:29:33,260 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 16:29:34,074 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 16:29:34,078 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 16:29:34,079 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 16:29:34,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:29:34 BoogieIcfgContainer [2022-07-13 16:29:34,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 16:29:34,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 16:29:34,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 16:29:34,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 16:29:34,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 04:29:32" (1/3) ... [2022-07-13 16:29:34,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff7d5d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 04:29:34, skipping insertion in model container [2022-07-13 16:29:34,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:29:33" (2/3) ... [2022-07-13 16:29:34,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff7d5d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 04:29:34, skipping insertion in model container [2022-07-13 16:29:34,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:29:34" (3/3) ... [2022-07-13 16:29:34,088 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2022-07-13 16:29:34,102 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 16:29:34,102 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 16:29:34,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 16:29:34,156 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@50ce581c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4be2cf80 [2022-07-13 16:29:34,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 16:29:34,161 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) [2022-07-13 16:29:34,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 16:29:34,167 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:29:34,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:29:34,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:29:34,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:29:34,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2022-07-13 16:29:34,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 16:29:34,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765066439] [2022-07-13 16:29:34,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:29:34,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 16:29:34,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 16:29:34,191 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) [2022-07-13 16:29:34,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 16:29:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:29:34,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 16:29:34,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:29:34,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 16:29:34,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 16:29:34,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 16:29:34,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765066439] [2022-07-13 16:29:34,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765066439] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 16:29:34,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 16:29:34,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 16:29:34,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082348505] [2022-07-13 16:29:34,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 16:29:34,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 16:29:34,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 16:29:34,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 16:29:34,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 16:29:34,613 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) [2022-07-13 16:29:34,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:29:34,626 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-07-13 16:29:34,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 16:29:34,628 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 [2022-07-13 16:29:34,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:29:34,633 INFO L225 Difference]: With dead ends: 32 [2022-07-13 16:29:34,634 INFO L226 Difference]: Without dead ends: 13 [2022-07-13 16:29:34,636 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 [2022-07-13 16:29:34,638 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 [2022-07-13 16:29:34,639 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] [2022-07-13 16:29:34,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-13 16:29:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-13 16:29:34,664 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) [2022-07-13 16:29:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-13 16:29:34,666 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2022-07-13 16:29:34,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:29:34,666 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-13 16:29:34,666 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) [2022-07-13 16:29:34,666 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-07-13 16:29:34,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 16:29:34,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:29:34,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:29:34,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-13 16:29:34,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 16:29:34,871 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:29:34,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:29:34,871 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2022-07-13 16:29:34,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 16:29:34,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464612639] [2022-07-13 16:29:34,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:29:34,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 16:29:34,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 16:29:34,874 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) [2022-07-13 16:29:34,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 16:29:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:29:35,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 16:29:35,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:29:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 16:29:35,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 16:29:35,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 16:29:35,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464612639] [2022-07-13 16:29:35,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464612639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 16:29:35,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 16:29:35,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 16:29:35,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13494759] [2022-07-13 16:29:35,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 16:29:35,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 16:29:35,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 16:29:35,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 16:29:35,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 16:29:35,235 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) [2022-07-13 16:29:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:29:36,263 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-07-13 16:29:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 16:29:36,264 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 [2022-07-13 16:29:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:29:36,264 INFO L225 Difference]: With dead ends: 22 [2022-07-13 16:29:36,265 INFO L226 Difference]: Without dead ends: 15 [2022-07-13 16:29:36,265 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 [2022-07-13 16:29:36,266 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 16:29:36,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 16:29:36,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-13 16:29:36,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-13 16:29:36,270 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) [2022-07-13 16:29:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-07-13 16:29:36,271 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2022-07-13 16:29:36,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:29:36,271 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-07-13 16:29:36,271 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) [2022-07-13 16:29:36,272 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-07-13 16:29:36,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 16:29:36,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:29:36,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:29:36,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-13 16:29:36,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 16:29:36,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:29:36,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:29:36,480 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2022-07-13 16:29:36,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 16:29:36,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413247777] [2022-07-13 16:29:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:29:36,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 16:29:36,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 16:29:36,483 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) [2022-07-13 16:29:36,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 16:29:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:29:39,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 16:29:39,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:30:05,253 WARN L833 $PredicateComparison]: unable to prove that (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (= ((_ 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| (_ 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 ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1)) (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 [2022-07-13 16:30:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 16:30:07,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 16:30:07,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 16:30:07,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413247777] [2022-07-13 16:30:07,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413247777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 16:30:07,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 16:30:07,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 16:30:07,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077541987] [2022-07-13 16:30:07,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 16:30:07,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 16:30:07,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 16:30:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 16:30:07,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2022-07-13 16:30:07,020 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) [2022-07-13 16:30:10,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 16:30:13,126 WARN L833 $PredicateComparison]: unable to prove that (and (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-13 16:30:14,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 16:30:16,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 16:30:18,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 16:30:20,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 16:30:24,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 16:30:26,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 16:30:28,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 16:30:28,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:30:28,907 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2022-07-13 16:30:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 16:30:28,918 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 [2022-07-13 16:30:28,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:30:28,919 INFO L225 Difference]: With dead ends: 23 [2022-07-13 16:30:28,919 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 16:30:28,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=16, Invalid=20, Unknown=2, NotChecked=18, Total=56 [2022-07-13 16:30:28,920 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-07-13 16:30:28,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 33 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 6 Unknown, 21 Unchecked, 18.5s Time] [2022-07-13 16:30:28,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 16:30:28,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 16:30:28,922 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) [2022-07-13 16:30:28,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 16:30:28,922 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2022-07-13 16:30:28,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:30:28,922 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 16:30:28,922 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) [2022-07-13 16:30:28,923 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 16:30:28,923 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 16:30:28,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 16:30:28,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-13 16:30:29,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 16:30:29,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 16:30:29,686 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2022-07-13 16:30:29,686 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-13 16:30:29,687 INFO L899 garLoopResultBuilder]: For program point L33-1(lines 32 39) no Hoare annotation was computed. [2022-07-13 16:30:29,687 INFO L902 garLoopResultBuilder]: At program point L42(lines 25 43) the Hoare annotation is: true [2022-07-13 16:30:29,687 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-13 16:30:29,687 INFO L899 garLoopResultBuilder]: For program point L32-1(lines 32 39) no Hoare annotation was computed. [2022-07-13 16:30:29,687 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-13 16:30:29,687 INFO L895 garLoopResultBuilder]: At program point L32-3(lines 32 39) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2022-07-13 16:30:29,687 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-13 16:30:29,688 INFO L895 garLoopResultBuilder]: At program point L32-4(lines 32 39) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2022-07-13 16:30:29,688 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-07-13 16:30:29,688 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 20) no Hoare annotation was computed. [2022-07-13 16:30:29,688 INFO L899 garLoopResultBuilder]: For program point L17-2(lines 16 22) no Hoare annotation was computed. [2022-07-13 16:30:29,688 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 16 22) the Hoare annotation is: true [2022-07-13 16:30:29,688 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 16 22) no Hoare annotation was computed. [2022-07-13 16:30:29,688 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-07-13 16:30:29,689 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 19) no Hoare annotation was computed. [2022-07-13 16:30:29,695 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-13 16:30:29,696 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 16:30:29,702 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-13 16:30:29,706 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-13 16:30:29,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 04:30:29 BoogieIcfgContainer [2022-07-13 16:30:29,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 16:30:29,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 16:30:29,707 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 16:30:29,708 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 16:30:29,708 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:29:34" (3/4) ... [2022-07-13 16:30:29,711 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 16:30:29,716 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-13 16:30:29,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-13 16:30:29,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-13 16:30:29,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 16:30:29,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 16:30:29,751 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 16:30:29,751 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 16:30:29,752 INFO L158 Benchmark]: Toolchain (without parser) took 56929.75ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.3MB in the beginning and 43.0MB in the end (delta: -13.8MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2022-07-13 16:30:29,752 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 52.4MB. Free memory is still 33.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 16:30:29,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.77ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.1MB in the beginning and 45.6MB in the end (delta: -16.4MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-07-13 16:30:29,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.22ms. Allocated memory is still 62.9MB. Free memory was 45.4MB in the beginning and 43.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 16:30:29,753 INFO L158 Benchmark]: Boogie Preprocessor took 37.15ms. Allocated memory is still 62.9MB. Free memory was 43.9MB in the beginning and 42.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 16:30:29,753 INFO L158 Benchmark]: RCFGBuilder took 955.33ms. Allocated memory is still 62.9MB. Free memory was 42.7MB in the beginning and 33.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 16:30:29,754 INFO L158 Benchmark]: TraceAbstraction took 55624.61ms. Allocated memory is still 62.9MB. Free memory was 33.3MB in the beginning and 24.4MB in the end (delta: 8.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2022-07-13 16:30:29,754 INFO L158 Benchmark]: Witness Printer took 44.20ms. Allocated memory is still 62.9MB. Free memory was 24.4MB in the beginning and 43.0MB in the end (delta: -18.6MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-07-13 16:30:29,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 52.4MB. Free memory is still 33.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.77ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.1MB in the beginning and 45.6MB in the end (delta: -16.4MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.22ms. Allocated memory is still 62.9MB. Free memory was 45.4MB in the beginning and 43.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.15ms. Allocated memory is still 62.9MB. Free memory was 43.9MB in the beginning and 42.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 955.33ms. Allocated memory is still 62.9MB. Free memory was 42.7MB in the beginning and 33.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 55624.61ms. Allocated memory is still 62.9MB. Free memory was 33.3MB in the beginning and 24.4MB in the end (delta: 8.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Witness Printer took 44.20ms. Allocated memory is still 62.9MB. Free memory was 24.4MB in the beginning and 43.0MB in the end (delta: -18.6MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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: 55.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 23.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 19.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 19.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 21 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 45 mSDtfsCounter, 26 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, 7.9s 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, 11 HoareAnnotationTreeSize, 11 FomulaSimplifications, 51 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 146 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 27.7s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 1 QuantifiedInterpolants, 143 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 [2022-07-13 16:30:29,765 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-13 16:30:29,766 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-13 16:30:29,890 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