./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_valuebound1.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 322f54fed62e27ecdc37b8dbd1ba5a40efbeb3c981a1a7430a57877b391f432f --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 14:07:54,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 14:07:54,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 14:07:54,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 14:07:54,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 14:07:54,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 14:07:54,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 14:07:54,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 14:07:54,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 14:07:54,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 14:07:54,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 14:07:54,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 14:07:54,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 14:07:54,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 14:07:54,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 14:07:54,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 14:07:54,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 14:07:54,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 14:07:54,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 14:07:54,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 14:07:54,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 14:07:54,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 14:07:54,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 14:07:54,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 14:07:54,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 14:07:54,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 14:07:54,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 14:07:54,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 14:07:54,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 14:07:54,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 14:07:54,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 14:07:54,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 14:07:54,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 14:07:54,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 14:07:54,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 14:07:54,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 14:07:54,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 14:07:54,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 14:07:54,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 14:07:54,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 14:07:54,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 14:07:54,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 14:07:54,895 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 14:07:54,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 14:07:54,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 14:07:54,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 14:07:54,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 14:07:54,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 14:07:54,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 14:07:54,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 14:07:54,898 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 14:07:54,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 14:07:54,899 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 14:07:54,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 14:07:54,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 14:07:54,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 14:07:54,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 14:07:54,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 14:07:54,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 14:07:54,900 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 14:07:54,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 14:07:54,900 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 14:07:54,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 14:07:54,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 14:07:54,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 14:07:54,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 14:07:54,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:07:54,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 14:07:54,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 14:07:54,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 14:07:54,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 14:07:54,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 14:07:54,903 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 14:07:54,904 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 14:07:54,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 14:07:54,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 14:07:54,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 322f54fed62e27ecdc37b8dbd1ba5a40efbeb3c981a1a7430a57877b391f432f [2021-12-14 14:07:55,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 14:07:55,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 14:07:55,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 14:07:55,105 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 14:07:55,105 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 14:07:55,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c [2021-12-14 14:07:55,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c703b5103/af1bd8c59dad40fb8ac46c276d04cb1a/FLAG66b526f27 [2021-12-14 14:07:55,561 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 14:07:55,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c [2021-12-14 14:07:55,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c703b5103/af1bd8c59dad40fb8ac46c276d04cb1a/FLAG66b526f27 [2021-12-14 14:07:55,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c703b5103/af1bd8c59dad40fb8ac46c276d04cb1a [2021-12-14 14:07:55,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 14:07:55,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 14:07:55,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 14:07:55,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 14:07:55,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 14:07:55,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:07:55" (1/1) ... [2021-12-14 14:07:55,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28558347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:55, skipping insertion in model container [2021-12-14 14:07:55,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:07:55" (1/1) ... [2021-12-14 14:07:55,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 14:07:56,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 14:07:56,129 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_valuebound1.c[712,725] [2021-12-14 14:07:56,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:07:56,149 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 14:07:56,158 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_valuebound1.c[712,725] [2021-12-14 14:07:56,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:07:56,174 INFO L208 MainTranslator]: Completed translation [2021-12-14 14:07:56,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:56 WrapperNode [2021-12-14 14:07:56,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 14:07:56,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 14:07:56,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 14:07:56,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 14:07:56,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:56" (1/1) ... [2021-12-14 14:07:56,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:56" (1/1) ... [2021-12-14 14:07:56,200 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2021-12-14 14:07:56,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 14:07:56,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 14:07:56,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 14:07:56,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 14:07:56,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:56" (1/1) ... [2021-12-14 14:07:56,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:56" (1/1) ... [2021-12-14 14:07:56,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:56" (1/1) ... [2021-12-14 14:07:56,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:56" (1/1) ... [2021-12-14 14:07:56,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:56" (1/1) ... [2021-12-14 14:07:56,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:56" (1/1) ... [2021-12-14 14:07:56,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:56" (1/1) ... [2021-12-14 14:07:56,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 14:07:56,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 14:07:56,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 14:07:56,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 14:07:56,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:56" (1/1) ... [2021-12-14 14:07:56,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:07:56,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:07:56,238 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) [2021-12-14 14:07:56,259 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 [2021-12-14 14:07:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 14:07:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 14:07:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 14:07:56,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 14:07:56,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 14:07:56,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 14:07:56,318 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 14:07:56,320 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 14:07:56,396 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 14:07:56,400 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 14:07:56,400 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 14:07:56,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:07:56 BoogieIcfgContainer [2021-12-14 14:07:56,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 14:07:56,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 14:07:56,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 14:07:56,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 14:07:56,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:07:55" (1/3) ... [2021-12-14 14:07:56,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d72cf19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:07:56, skipping insertion in model container [2021-12-14 14:07:56,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:56" (2/3) ... [2021-12-14 14:07:56,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d72cf19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:07:56, skipping insertion in model container [2021-12-14 14:07:56,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:07:56" (3/3) ... [2021-12-14 14:07:56,407 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound1.c [2021-12-14 14:07:56,422 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 14:07:56,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 14:07:56,469 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 14:07:56,495 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 14:07:56,496 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 14:07:56,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-12-14 14:07:56,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 14:07:56,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:07:56,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:07:56,516 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:07:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:07:56,519 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2021-12-14 14:07:56,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:07:56,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222151951] [2021-12-14 14:07:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:07:56,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:07:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:07:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 14:07:56,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:07:56,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222151951] [2021-12-14 14:07:56,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222151951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:07:56,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:07:56,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 14:07:56,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191091354] [2021-12-14 14:07:56,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:07:56,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 14:07:56,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:07:56,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 14:07:56,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 14:07:56,645 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-14 14:07:56,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:07:56,656 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-12-14 14:07:56,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 14:07:56,658 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2021-12-14 14:07:56,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:07:56,662 INFO L225 Difference]: With dead ends: 33 [2021-12-14 14:07:56,662 INFO L226 Difference]: Without dead ends: 14 [2021-12-14 14:07:56,664 INFO L932 BasicCegarLoop]: 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 [2021-12-14 14:07:56,667 INFO L933 BasicCegarLoop]: 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 [2021-12-14 14:07:56,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:07:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-14 14:07:56,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-14 14:07:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 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) [2021-12-14 14:07:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-14 14:07:56,707 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2021-12-14 14:07:56,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:07:56,707 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-14 14:07:56,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-14 14:07:56,708 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-14 14:07:56,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 14:07:56,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:07:56,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:07:56,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 14:07:56,710 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:07:56,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:07:56,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2021-12-14 14:07:56,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:07:56,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401114290] [2021-12-14 14:07:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:07:56,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:07:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 14:07:56,735 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 14:07:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 14:07:56,770 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 14:07:56,771 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 14:07:56,772 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 14:07:56,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 14:07:56,778 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-14 14:07:56,780 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 14:07:56,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:07:56 BoogieIcfgContainer [2021-12-14 14:07:56,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 14:07:56,798 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 14:07:56,798 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 14:07:56,798 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 14:07:56,799 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:07:56" (3/4) ... [2021-12-14 14:07:56,802 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 14:07:56,802 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 14:07:56,803 INFO L158 Benchmark]: Toolchain (without parser) took 817.46ms. Allocated memory was 102.8MB in the beginning and 140.5MB in the end (delta: 37.7MB). Free memory was 73.5MB in the beginning and 109.4MB in the end (delta: -36.0MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2021-12-14 14:07:56,803 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 14:07:56,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.91ms. Allocated memory is still 102.8MB. Free memory was 73.2MB in the beginning and 77.8MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 14:07:56,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.42ms. Allocated memory is still 102.8MB. Free memory was 77.8MB in the beginning and 76.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 14:07:56,808 INFO L158 Benchmark]: Boogie Preprocessor took 12.87ms. Allocated memory is still 102.8MB. Free memory was 76.3MB in the beginning and 75.3MB in the end (delta: 967.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 14:07:56,808 INFO L158 Benchmark]: RCFGBuilder took 186.91ms. Allocated memory is still 102.8MB. Free memory was 75.3MB in the beginning and 66.6MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 14:07:56,809 INFO L158 Benchmark]: TraceAbstraction took 395.38ms. Allocated memory was 102.8MB in the beginning and 140.5MB in the end (delta: 37.7MB). Free memory was 66.3MB in the beginning and 110.1MB in the end (delta: -43.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 14:07:56,809 INFO L158 Benchmark]: Witness Printer took 3.87ms. Allocated memory is still 140.5MB. Free memory was 110.1MB in the beginning and 109.4MB in the end (delta: 680.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 14:07:56,813 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.91ms. Allocated memory is still 102.8MB. Free memory was 73.2MB in the beginning and 77.8MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.42ms. Allocated memory is still 102.8MB. Free memory was 77.8MB in the beginning and 76.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.87ms. Allocated memory is still 102.8MB. Free memory was 76.3MB in the beginning and 75.3MB in the end (delta: 967.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 186.91ms. Allocated memory is still 102.8MB. Free memory was 75.3MB in the beginning and 66.6MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 395.38ms. Allocated memory was 102.8MB in the beginning and 140.5MB in the end (delta: 37.7MB). Free memory was 66.3MB in the beginning and 110.1MB in the end (delta: -43.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.87ms. Allocated memory is still 140.5MB. Free memory was 110.1MB in the beginning and 109.4MB in the end (delta: 680.0kB). 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 someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=1) [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=1) [L29] x = a / 2.0 [L30] r = 0 VAL [r=0] [L32] COND TRUE 1 VAL [r=0] [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 19 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2021-12-14 14:07:56,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_valuebound1.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 322f54fed62e27ecdc37b8dbd1ba5a40efbeb3c981a1a7430a57877b391f432f --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 14:07:58,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 14:07:58,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 14:07:58,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 14:07:58,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 14:07:58,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 14:07:58,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 14:07:58,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 14:07:58,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 14:07:58,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 14:07:58,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 14:07:58,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 14:07:58,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 14:07:58,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 14:07:58,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 14:07:58,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 14:07:58,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 14:07:58,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 14:07:58,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 14:07:58,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 14:07:58,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 14:07:58,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 14:07:58,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 14:07:58,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 14:07:58,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 14:07:58,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 14:07:58,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 14:07:58,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 14:07:58,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 14:07:58,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 14:07:58,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 14:07:58,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 14:07:58,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 14:07:58,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 14:07:58,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 14:07:58,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 14:07:58,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 14:07:58,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 14:07:58,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 14:07:58,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 14:07:58,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 14:07:58,778 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 14:07:58,811 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 14:07:58,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 14:07:58,812 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 14:07:58,812 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 14:07:58,813 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 14:07:58,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 14:07:58,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 14:07:58,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 14:07:58,814 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 14:07:58,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 14:07:58,815 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 14:07:58,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 14:07:58,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 14:07:58,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 14:07:58,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 14:07:58,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 14:07:58,816 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 14:07:58,816 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 14:07:58,816 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 14:07:58,816 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 14:07:58,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 14:07:58,817 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 14:07:58,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 14:07:58,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 14:07:58,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 14:07:58,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 14:07:58,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:07:58,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 14:07:58,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 14:07:58,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 14:07:58,818 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 14:07:58,818 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 14:07:58,819 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 14:07:58,819 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 14:07:58,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 14:07:58,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 14:07:58,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 14:07:58,819 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 322f54fed62e27ecdc37b8dbd1ba5a40efbeb3c981a1a7430a57877b391f432f [2021-12-14 14:07:59,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 14:07:59,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 14:07:59,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 14:07:59,149 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 14:07:59,150 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 14:07:59,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c [2021-12-14 14:07:59,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad11b492b/302cdb7c5ce64763a8cf9f9d766e9dab/FLAG6a00beb2b [2021-12-14 14:07:59,543 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 14:07:59,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c [2021-12-14 14:07:59,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad11b492b/302cdb7c5ce64763a8cf9f9d766e9dab/FLAG6a00beb2b [2021-12-14 14:07:59,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad11b492b/302cdb7c5ce64763a8cf9f9d766e9dab [2021-12-14 14:07:59,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 14:07:59,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 14:07:59,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 14:07:59,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 14:07:59,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 14:07:59,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:07:59" (1/1) ... [2021-12-14 14:07:59,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c0d697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:59, skipping insertion in model container [2021-12-14 14:07:59,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:07:59" (1/1) ... [2021-12-14 14:07:59,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 14:07:59,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 14:07:59,696 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_valuebound1.c[712,725] [2021-12-14 14:07:59,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:07:59,719 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 14:07:59,732 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_valuebound1.c[712,725] [2021-12-14 14:07:59,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:07:59,750 INFO L208 MainTranslator]: Completed translation [2021-12-14 14:07:59,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:59 WrapperNode [2021-12-14 14:07:59,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 14:07:59,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 14:07:59,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 14:07:59,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 14:07:59,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:59" (1/1) ... [2021-12-14 14:07:59,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:59" (1/1) ... [2021-12-14 14:07:59,786 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2021-12-14 14:07:59,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 14:07:59,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 14:07:59,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 14:07:59,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 14:07:59,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:59" (1/1) ... [2021-12-14 14:07:59,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:59" (1/1) ... [2021-12-14 14:07:59,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:59" (1/1) ... [2021-12-14 14:07:59,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:59" (1/1) ... [2021-12-14 14:07:59,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:59" (1/1) ... [2021-12-14 14:07:59,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:59" (1/1) ... [2021-12-14 14:07:59,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:59" (1/1) ... [2021-12-14 14:07:59,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 14:07:59,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 14:07:59,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 14:07:59,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 14:07:59,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:59" (1/1) ... [2021-12-14 14:07:59,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:07:59,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:07:59,881 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) [2021-12-14 14:07:59,925 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 [2021-12-14 14:07:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 14:07:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 14:07:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 14:07:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 14:07:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 14:07:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 14:07:59,981 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 14:07:59,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 14:08:00,945 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 14:08:00,957 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 14:08:00,958 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 14:08:00,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:08:00 BoogieIcfgContainer [2021-12-14 14:08:00,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 14:08:00,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 14:08:00,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 14:08:00,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 14:08:00,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:07:59" (1/3) ... [2021-12-14 14:08:00,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603ff2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:08:00, skipping insertion in model container [2021-12-14 14:08:00,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:07:59" (2/3) ... [2021-12-14 14:08:00,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603ff2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:08:00, skipping insertion in model container [2021-12-14 14:08:00,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:08:00" (3/3) ... [2021-12-14 14:08:00,980 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound1.c [2021-12-14 14:08:00,999 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 14:08:00,999 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 14:08:01,066 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 14:08:01,081 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 14:08:01,081 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 14:08:01,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-12-14 14:08:01,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 14:08:01,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:08:01,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:08:01,116 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:08:01,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:08:01,120 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2021-12-14 14:08:01,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 14:08:01,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979827642] [2021-12-14 14:08:01,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:08:01,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 14:08:01,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 14:08:01,149 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) [2021-12-14 14:08:01,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 14:08:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:08:01,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 14:08:01,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:08:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 14:08:01,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:08:01,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 14:08:01,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979827642] [2021-12-14 14:08:01,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979827642] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:08:01,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:08:01,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 14:08:01,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684012479] [2021-12-14 14:08:01,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:08:01,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 14:08:01,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 14:08:01,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 14:08:01,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 14:08:01,559 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-14 14:08:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:08:01,576 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-12-14 14:08:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 14:08:01,578 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2021-12-14 14:08:01,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:08:01,582 INFO L225 Difference]: With dead ends: 33 [2021-12-14 14:08:01,582 INFO L226 Difference]: Without dead ends: 14 [2021-12-14 14:08:01,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 14:08:01,587 INFO L933 BasicCegarLoop]: 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 [2021-12-14 14:08:01,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:08:01,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-14 14:08:01,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-14 14:08:01,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 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) [2021-12-14 14:08:01,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-14 14:08:01,609 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2021-12-14 14:08:01,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:08:01,610 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-14 14:08:01,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-14 14:08:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-14 14:08:01,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 14:08:01,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:08:01,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:08:01,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-14 14:08:01,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 14:08:01,820 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:08:01,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:08:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2021-12-14 14:08:01,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 14:08:01,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092652254] [2021-12-14 14:08:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:08:01,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 14:08:01,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 14:08:01,823 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) [2021-12-14 14:08:01,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 14:08:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:08:03,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 14:08:03,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:08:17,323 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-14 14:09:11,073 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (let ((.cse1 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (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)))) (or (and .cse1 (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) (and (not .cse1) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))))))) is different from false [2021-12-14 14:09:13,113 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (let ((.cse1 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (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)))) (or (and .cse1 (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) (and (not .cse1) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))))))) is different from true