./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 e19ca921 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-dev-e19ca92 [2021-12-22 10:58:52,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:58:52,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:58:52,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:58:52,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:58:52,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:58:52,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:58:52,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:58:52,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:58:52,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:58:52,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:58:52,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:58:52,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:58:52,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:58:52,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:58:52,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:58:52,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:58:52,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:58:52,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:58:52,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:58:52,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:58:52,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:58:52,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:58:52,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:58:52,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:58:52,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:58:52,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:58:52,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:58:52,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:58:52,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:58:52,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:58:52,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:58:52,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:58:52,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:58:52,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:58:52,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:58:52,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:58:52,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:58:52,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:58:52,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:58:52,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:58:52,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 10:58:52,877 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:58:52,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:58:52,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:58:52,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:58:52,879 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:58:52,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:58:52,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:58:52,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:58:52,880 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:58:52,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:58:52,881 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:58:52,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 10:58:52,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:58:52,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:58:52,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:58:52,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:58:52,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:58:52,883 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:58:52,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:58:52,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:58:52,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:58:52,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:58:52,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:58:52,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:58:52,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:58:52,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:58:52,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:58:52,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:58:52,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 10:58:52,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 10:58:52,885 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:58:52,885 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:58:52,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:58:52,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:58:52,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 322f54fed62e27ecdc37b8dbd1ba5a40efbeb3c981a1a7430a57877b391f432f [2021-12-22 10:58:53,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:58:53,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:58:53,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:58:53,157 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:58:53,158 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:58:53,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c [2021-12-22 10:58:53,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cf88b6e4/07d7f3fa95874316ab2e865c7658eb81/FLAG2320df7d7 [2021-12-22 10:58:53,590 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:58:53,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c [2021-12-22 10:58:53,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cf88b6e4/07d7f3fa95874316ab2e865c7658eb81/FLAG2320df7d7 [2021-12-22 10:58:54,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cf88b6e4/07d7f3fa95874316ab2e865c7658eb81 [2021-12-22 10:58:54,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:58:54,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:58:54,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:58:54,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:58:54,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:58:54,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:58:54" (1/1) ... [2021-12-22 10:58:54,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f85e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:54, skipping insertion in model container [2021-12-22 10:58:54,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:58:54" (1/1) ... [2021-12-22 10:58:54,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:58:54,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:58:54,177 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] [2021-12-22 10:58:54,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:58:54,195 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:58:54,206 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] [2021-12-22 10:58:54,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:58:54,227 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:58:54,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:54 WrapperNode [2021-12-22 10:58:54,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:58:54,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:58:54,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:58:54,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:58:54,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:54" (1/1) ... [2021-12-22 10:58:54,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:54" (1/1) ... [2021-12-22 10:58:54,257 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2021-12-22 10:58:54,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:58:54,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:58:54,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:58:54,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:58:54,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:54" (1/1) ... [2021-12-22 10:58:54,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:54" (1/1) ... [2021-12-22 10:58:54,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:54" (1/1) ... [2021-12-22 10:58:54,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:54" (1/1) ... [2021-12-22 10:58:54,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:54" (1/1) ... [2021-12-22 10:58:54,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:54" (1/1) ... [2021-12-22 10:58:54,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:54" (1/1) ... [2021-12-22 10:58:54,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:58:54,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:58:54,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:58:54,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:58:54,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:54" (1/1) ... [2021-12-22 10:58:54,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:58:54,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:58:54,321 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) [2021-12-22 10:58:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:58:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 10:58:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:58:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:58:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 10:58:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 10:58:54,345 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 [2021-12-22 10:58:54,414 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:58:54,416 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:58:54,549 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:58:54,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:58:54,557 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 10:58:54,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:58:54 BoogieIcfgContainer [2021-12-22 10:58:54,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:58:54,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:58:54,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:58:54,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:58:54,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:58:54" (1/3) ... [2021-12-22 10:58:54,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16bccd76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:58:54, skipping insertion in model container [2021-12-22 10:58:54,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:54" (2/3) ... [2021-12-22 10:58:54,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16bccd76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:58:54, skipping insertion in model container [2021-12-22 10:58:54,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:58:54" (3/3) ... [2021-12-22 10:58:54,566 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound1.c [2021-12-22 10:58:54,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:58:54,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:58:54,620 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:58:54,627 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 [2021-12-22 10:58:54,627 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:58:54,653 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) [2021-12-22 10:58:54,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 10:58:54,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:58:54,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:58:54,657 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:58:54,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:58:54,662 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2021-12-22 10:58:54,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:58:54,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028207280] [2021-12-22 10:58:54,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:58:54,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:58:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:58:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:58:54,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 10:58:54,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028207280] [2021-12-22 10:58:54,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028207280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:58:54,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:58:54,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 10:58:54,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402540728] [2021-12-22 10:58:54,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:58:54,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 10:58:54,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 10:58:54,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 10:58:54,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:58:54,851 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) [2021-12-22 10:58:54,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:58:54,864 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-12-22 10:58:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 10:58:54,866 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 [2021-12-22 10:58:54,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:58:54,870 INFO L225 Difference]: With dead ends: 33 [2021-12-22 10:58:54,871 INFO L226 Difference]: Without dead ends: 14 [2021-12-22 10:58:54,873 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 [2021-12-22 10:58:54,875 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 [2021-12-22 10:58:54,876 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] [2021-12-22 10:58:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-22 10:58:54,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-22 10:58:54,900 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) [2021-12-22 10:58:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-22 10:58:54,902 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2021-12-22 10:58:54,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:58:54,902 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-22 10:58:54,902 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) [2021-12-22 10:58:54,903 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-22 10:58:54,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 10:58:54,903 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:58:54,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:58:54,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 10:58:54,904 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:58:54,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:58:54,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2021-12-22 10:58:54,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:58:54,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122419575] [2021-12-22 10:58:54,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:58:54,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:58:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:58:54,928 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 10:58:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:58:54,960 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 10:58:54,960 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 10:58:54,962 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 10:58:54,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 10:58:54,969 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-22 10:58:54,971 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 10:58:55,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:58:55 BoogieIcfgContainer [2021-12-22 10:58:55,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 10:58:55,002 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 10:58:55,002 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 10:58:55,002 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 10:58:55,002 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:58:54" (3/4) ... [2021-12-22 10:58:55,005 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 10:58:55,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 10:58:55,008 INFO L158 Benchmark]: Toolchain (without parser) took 993.71ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 58.0MB in the beginning and 87.0MB in the end (delta: -29.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:58:55,008 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 62.3MB in the beginning and 62.3MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:58:55,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.67ms. Allocated memory is still 90.2MB. Free memory was 57.9MB in the beginning and 67.5MB in the end (delta: -9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 10:58:55,012 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.63ms. Allocated memory is still 90.2MB. Free memory was 67.5MB in the beginning and 66.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 10:58:55,012 INFO L158 Benchmark]: Boogie Preprocessor took 34.77ms. Allocated memory is still 90.2MB. Free memory was 66.2MB in the beginning and 65.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:58:55,022 INFO L158 Benchmark]: RCFGBuilder took 265.95ms. Allocated memory is still 90.2MB. Free memory was 65.0MB in the beginning and 56.2MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 10:58:55,023 INFO L158 Benchmark]: TraceAbstraction took 441.08ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 55.4MB in the beginning and 87.6MB in the end (delta: -32.1MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2021-12-22 10:58:55,023 INFO L158 Benchmark]: Witness Printer took 4.03ms. Allocated memory is still 109.1MB. Free memory was 87.6MB in the beginning and 87.0MB in the end (delta: 551.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:58:55,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 62.3MB in the beginning and 62.3MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.67ms. Allocated memory is still 90.2MB. Free memory was 57.9MB in the beginning and 67.5MB in the end (delta: -9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.63ms. Allocated memory is still 90.2MB. Free memory was 67.5MB in the beginning and 66.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.77ms. Allocated memory is still 90.2MB. Free memory was 66.2MB in the beginning and 65.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 265.95ms. Allocated memory is still 90.2MB. Free memory was 65.0MB in the beginning and 56.2MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 441.08ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 55.4MB in the beginning and 87.6MB in the end (delta: -32.1MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. * Witness Printer took 4.03ms. Allocated memory is still 109.1MB. Free memory was 87.6MB in the beginning and 87.0MB in the end (delta: 551.7kB). 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: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, 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, 0.1s 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 [2021-12-22 10:58:55,074 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_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-dev-e19ca92 [2021-12-22 10:58:57,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:58:57,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:58:57,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:58:57,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:58:57,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:58:57,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:58:57,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:58:57,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:58:57,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:58:57,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:58:57,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:58:57,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:58:57,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:58:57,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:58:57,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:58:57,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:58:57,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:58:57,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:58:57,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:58:57,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:58:57,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:58:57,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:58:57,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:58:57,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:58:57,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:58:57,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:58:57,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:58:57,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:58:57,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:58:57,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:58:57,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:58:57,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:58:57,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:58:57,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:58:57,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:58:57,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:58:57,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:58:57,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:58:57,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:58:57,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:58:57,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 10:58:57,146 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:58:57,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:58:57,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:58:57,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:58:57,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:58:57,149 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:58:57,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:58:57,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:58:57,150 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:58:57,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:58:57,151 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:58:57,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:58:57,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:58:57,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:58:57,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:58:57,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:58:57,152 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 10:58:57,153 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 10:58:57,153 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 10:58:57,153 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:58:57,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:58:57,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:58:57,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:58:57,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:58:57,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:58:57,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:58:57,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:58:57,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:58:57,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:58:57,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:58:57,163 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 10:58:57,163 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 10:58:57,164 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:58:57,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:58:57,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:58:57,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:58:57,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 10:58:57,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 322f54fed62e27ecdc37b8dbd1ba5a40efbeb3c981a1a7430a57877b391f432f [2021-12-22 10:58:57,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:58:57,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:58:57,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:58:57,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:58:57,463 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:58:57,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c [2021-12-22 10:58:57,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67176415e/ebe3592ec0d14f1c83d995057e25345a/FLAG44c646eb1 [2021-12-22 10:58:57,954 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:58:57,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c [2021-12-22 10:58:57,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67176415e/ebe3592ec0d14f1c83d995057e25345a/FLAG44c646eb1 [2021-12-22 10:58:57,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67176415e/ebe3592ec0d14f1c83d995057e25345a [2021-12-22 10:58:57,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:58:57,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:58:57,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:58:57,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:58:57,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:58:57,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:58:57" (1/1) ... [2021-12-22 10:58:57,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50aa4285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:57, skipping insertion in model container [2021-12-22 10:58:57,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:58:57" (1/1) ... [2021-12-22 10:58:57,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:58:58,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:58:58,175 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] [2021-12-22 10:58:58,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:58:58,240 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:58:58,256 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] [2021-12-22 10:58:58,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:58:58,283 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:58:58,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:58 WrapperNode [2021-12-22 10:58:58,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:58:58,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:58:58,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:58:58,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:58:58,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:58" (1/1) ... [2021-12-22 10:58:58,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:58" (1/1) ... [2021-12-22 10:58:58,323 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2021-12-22 10:58:58,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:58:58,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:58:58,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:58:58,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:58:58,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:58" (1/1) ... [2021-12-22 10:58:58,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:58" (1/1) ... [2021-12-22 10:58:58,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:58" (1/1) ... [2021-12-22 10:58:58,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:58" (1/1) ... [2021-12-22 10:58:58,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:58" (1/1) ... [2021-12-22 10:58:58,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:58" (1/1) ... [2021-12-22 10:58:58,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:58" (1/1) ... [2021-12-22 10:58:58,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:58:58,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:58:58,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:58:58,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:58:58,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:58" (1/1) ... [2021-12-22 10:58:58,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:58:58,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:58:58,401 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) [2021-12-22 10:58:58,424 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 [2021-12-22 10:58:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:58:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 10:58:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:58:58,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:58:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 10:58:58,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 10:58:58,506 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:58:58,507 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:58:59,910 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:58:59,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:58:59,915 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 10:58:59,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:58:59 BoogieIcfgContainer [2021-12-22 10:58:59,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:58:59,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:58:59,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:58:59,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:58:59,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:58:57" (1/3) ... [2021-12-22 10:58:59,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb33ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:58:59, skipping insertion in model container [2021-12-22 10:58:59,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:58:58" (2/3) ... [2021-12-22 10:58:59,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb33ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:58:59, skipping insertion in model container [2021-12-22 10:58:59,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:58:59" (3/3) ... [2021-12-22 10:58:59,932 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound1.c [2021-12-22 10:58:59,938 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:58:59,938 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:58:59,979 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:58:59,985 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 [2021-12-22 10:58:59,985 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:59:00,006 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) [2021-12-22 10:59:00,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 10:59:00,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:59:00,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:59:00,011 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:59:00,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:59:00,018 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2021-12-22 10:59:00,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:59:00,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890855583] [2021-12-22 10:59:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:59:00,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:59:00,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:59:00,035 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) [2021-12-22 10:59:00,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 10:59:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:59:00,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 10:59:00,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:59:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:59:00,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:59:00,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:59:00,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890855583] [2021-12-22 10:59:00,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890855583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:59:00,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:59:00,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 10:59:00,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538194871] [2021-12-22 10:59:00,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:59:00,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 10:59:00,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:59:00,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 10:59:00,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:59:00,512 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) [2021-12-22 10:59:00,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:59:00,526 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-12-22 10:59:00,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 10:59:00,528 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 [2021-12-22 10:59:00,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:59:00,533 INFO L225 Difference]: With dead ends: 33 [2021-12-22 10:59:00,533 INFO L226 Difference]: Without dead ends: 14 [2021-12-22 10:59:00,536 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 [2021-12-22 10:59:00,541 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 [2021-12-22 10:59:00,542 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] [2021-12-22 10:59:00,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-22 10:59:00,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-22 10:59:00,568 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) [2021-12-22 10:59:00,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-22 10:59:00,571 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2021-12-22 10:59:00,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:59:00,571 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-22 10:59:00,571 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) [2021-12-22 10:59:00,572 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-22 10:59:00,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 10:59:00,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:59:00,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:59:00,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-22 10:59:00,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:59:00,796 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:59:00,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:59:00,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2021-12-22 10:59:00,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:59:00,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979855862] [2021-12-22 10:59:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:59:00,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:59:00,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:59:00,801 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) [2021-12-22 10:59:00,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-22 10:59:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:59:01,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 10:59:01,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:59:55,715 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ 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))) (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (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)))) (or (and (not .cse0) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and .cse0 (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse1)))) is different from false [2021-12-22 10:59:57,754 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ 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))) (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (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)))) (or (and (not .cse0) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and .cse0 (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse1)))) is different from true