./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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/freire2_valuebound2.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 d2d6f9be66d27a1c9d3b3eaba0ccd86a9e6d263d5b40883199c2e280efc7ebbe --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 00:20:40,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 00:20:40,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 00:20:40,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 00:20:40,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 00:20:40,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 00:20:40,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 00:20:40,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 00:20:40,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 00:20:40,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 00:20:40,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 00:20:40,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 00:20:40,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 00:20:40,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 00:20:40,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 00:20:40,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 00:20:40,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 00:20:40,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 00:20:40,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 00:20:40,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 00:20:40,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 00:20:40,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 00:20:40,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 00:20:40,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 00:20:40,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 00:20:40,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 00:20:40,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 00:20:40,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 00:20:40,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 00:20:40,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 00:20:40,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 00:20:40,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 00:20:40,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 00:20:40,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 00:20:40,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 00:20:40,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 00:20:40,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 00:20:40,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 00:20:40,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 00:20:40,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 00:20:40,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 00:20:40,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 00:20:40,287 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 00:20:40,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 00:20:40,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 00:20:40,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 00:20:40,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 00:20:40,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 00:20:40,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 00:20:40,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 00:20:40,291 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 00:20:40,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 00:20:40,292 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 00:20:40,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 00:20:40,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 00:20:40,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 00:20:40,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 00:20:40,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 00:20:40,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 00:20:40,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 00:20:40,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 00:20:40,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 00:20:40,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 00:20:40,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 00:20:40,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 00:20:40,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 00:20:40,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:20:40,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 00:20:40,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 00:20:40,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 00:20:40,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 00:20:40,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 00:20:40,296 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 00:20:40,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 00:20:40,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 00:20:40,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2d6f9be66d27a1c9d3b3eaba0ccd86a9e6d263d5b40883199c2e280efc7ebbe [2021-12-28 00:20:40,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 00:20:40,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 00:20:40,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 00:20:40,638 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 00:20:40,640 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 00:20:40,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2021-12-28 00:20:40,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07dbd2914/b359af364b1b4a3d948425f9582e659c/FLAGc24dde69c [2021-12-28 00:20:41,155 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 00:20:41,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2021-12-28 00:20:41,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07dbd2914/b359af364b1b4a3d948425f9582e659c/FLAGc24dde69c [2021-12-28 00:20:41,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07dbd2914/b359af364b1b4a3d948425f9582e659c [2021-12-28 00:20:41,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 00:20:41,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 00:20:41,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 00:20:41,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 00:20:41,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 00:20:41,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:20:41" (1/1) ... [2021-12-28 00:20:41,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2a9446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:41, skipping insertion in model container [2021-12-28 00:20:41,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:20:41" (1/1) ... [2021-12-28 00:20:41,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 00:20:41,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 00:20:41,747 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/freire2_valuebound2.c[709,722] [2021-12-28 00:20:41,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:20:41,774 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 00:20:41,784 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/freire2_valuebound2.c[709,722] [2021-12-28 00:20:41,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:20:41,804 INFO L208 MainTranslator]: Completed translation [2021-12-28 00:20:41,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:41 WrapperNode [2021-12-28 00:20:41,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 00:20:41,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 00:20:41,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 00:20:41,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 00:20:41,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:41" (1/1) ... [2021-12-28 00:20:41,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:41" (1/1) ... [2021-12-28 00:20:41,834 INFO L137 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2021-12-28 00:20:41,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 00:20:41,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 00:20:41,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 00:20:41,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 00:20:41,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:41" (1/1) ... [2021-12-28 00:20:41,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:41" (1/1) ... [2021-12-28 00:20:41,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:41" (1/1) ... [2021-12-28 00:20:41,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:41" (1/1) ... [2021-12-28 00:20:41,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:41" (1/1) ... [2021-12-28 00:20:41,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:41" (1/1) ... [2021-12-28 00:20:41,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:41" (1/1) ... [2021-12-28 00:20:41,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 00:20:41,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 00:20:41,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 00:20:41,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 00:20:41,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:41" (1/1) ... [2021-12-28 00:20:41,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:20:41,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:20:41,885 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) [2021-12-28 00:20:41,898 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 [2021-12-28 00:20:41,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 00:20:41,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 00:20:41,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 00:20:41,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 00:20:41,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 00:20:41,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 00:20:41,983 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 00:20:41,985 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 00:20:42,135 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 00:20:42,141 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 00:20:42,141 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 00:20:42,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:20:42 BoogieIcfgContainer [2021-12-28 00:20:42,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 00:20:42,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 00:20:42,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 00:20:42,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 00:20:42,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 12:20:41" (1/3) ... [2021-12-28 00:20:42,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ca72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:20:42, skipping insertion in model container [2021-12-28 00:20:42,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:41" (2/3) ... [2021-12-28 00:20:42,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ca72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:20:42, skipping insertion in model container [2021-12-28 00:20:42,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:20:42" (3/3) ... [2021-12-28 00:20:42,152 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound2.c [2021-12-28 00:20:42,156 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 00:20:42,156 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 00:20:42,205 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 00:20:42,217 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 [2021-12-28 00:20:42,217 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 00:20:42,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-28 00:20:42,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 00:20:42,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:20:42,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:20:42,248 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:20:42,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:20:42,254 INFO L85 PathProgramCache]: Analyzing trace with hash -589224774, now seen corresponding path program 1 times [2021-12-28 00:20:42,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:20:42,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810118725] [2021-12-28 00:20:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:20:42,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:20:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:20:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 00:20:42,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:20:42,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810118725] [2021-12-28 00:20:42,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810118725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:20:42,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:20:42,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 00:20:42,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490878319] [2021-12-28 00:20:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:20:42,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 00:20:42,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:20:42,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 00:20:42,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 00:20:42,434 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2021-12-28 00:20:42,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:20:42,454 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2021-12-28 00:20:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 00:20:42,457 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 [2021-12-28 00:20:42,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:20:42,466 INFO L225 Difference]: With dead ends: 41 [2021-12-28 00:20:42,467 INFO L226 Difference]: Without dead ends: 18 [2021-12-28 00:20:42,471 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 [2021-12-28 00:20:42,474 INFO L933 BasicCegarLoop]: 27 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, 27 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 [2021-12-28 00:20:42,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:20:42,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-28 00:20:42,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-28 00:20:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-28 00:20:42,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2021-12-28 00:20:42,510 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2021-12-28 00:20:42,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:20:42,510 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2021-12-28 00:20:42,511 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) [2021-12-28 00:20:42,511 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2021-12-28 00:20:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 00:20:42,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:20:42,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:20:42,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 00:20:42,513 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:20:42,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:20:42,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1187450884, now seen corresponding path program 1 times [2021-12-28 00:20:42,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:20:42,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183936597] [2021-12-28 00:20:42,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:20:42,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:20:42,542 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 00:20:42,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759427732] [2021-12-28 00:20:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:20:42,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:20:42,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:20:42,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 00:20:42,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 00:20:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 00:20:42,615 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 00:20:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 00:20:42,650 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 00:20:42,651 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 00:20:42,652 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-28 00:20:42,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 00:20:42,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:20:42,891 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-28 00:20:42,893 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 00:20:42,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 12:20:42 BoogieIcfgContainer [2021-12-28 00:20:42,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 00:20:42,916 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 00:20:42,916 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 00:20:42,916 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 00:20:42,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:20:42" (3/4) ... [2021-12-28 00:20:42,919 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 00:20:42,919 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 00:20:42,922 INFO L158 Benchmark]: Toolchain (without parser) took 1342.19ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.7MB in the beginning and 31.9MB in the end (delta: -2.2MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2021-12-28 00:20:42,923 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 52.4MB. Free memory was 34.9MB in the beginning and 34.9MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 00:20:42,927 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.01ms. Allocated memory is still 52.4MB. Free memory was 29.6MB in the beginning and 32.6MB in the end (delta: -3.0MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2021-12-28 00:20:42,928 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.91ms. Allocated memory is still 52.4MB. Free memory was 32.6MB in the beginning and 31.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 00:20:42,929 INFO L158 Benchmark]: Boogie Preprocessor took 19.06ms. Allocated memory is still 52.4MB. Free memory was 31.0MB in the beginning and 29.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 00:20:42,930 INFO L158 Benchmark]: RCFGBuilder took 287.80ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.7MB in the beginning and 42.2MB in the end (delta: -12.5MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-12-28 00:20:42,930 INFO L158 Benchmark]: TraceAbstraction took 769.70ms. Allocated memory is still 62.9MB. Free memory was 41.8MB in the beginning and 32.3MB in the end (delta: 9.5MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2021-12-28 00:20:42,933 INFO L158 Benchmark]: Witness Printer took 4.00ms. Allocated memory is still 62.9MB. Free memory was 32.3MB in the beginning and 31.9MB in the end (delta: 328.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 00:20:42,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 52.4MB. Free memory was 34.9MB in the beginning and 34.9MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.01ms. Allocated memory is still 52.4MB. Free memory was 29.6MB in the beginning and 32.6MB in the end (delta: -3.0MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.91ms. Allocated memory is still 52.4MB. Free memory was 32.6MB in the beginning and 31.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.06ms. Allocated memory is still 52.4MB. Free memory was 31.0MB in the beginning and 29.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 287.80ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.7MB in the beginning and 42.2MB in the end (delta: -12.5MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * TraceAbstraction took 769.70ms. Allocated memory is still 62.9MB. Free memory was 41.8MB in the beginning and 32.3MB in the end (delta: 9.5MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Witness Printer took 4.00ms. Allocated memory is still 62.9MB. Free memory was 32.3MB in the beginning and 31.9MB in the end (delta: 328.2kB). 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 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=2) [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=2) [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [a=2, r=1, s=13/4, x=2] [L33] COND TRUE 1 VAL [a=2, r=1, s=13/4, x=2] [L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) 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, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 27 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, 27 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=22occurred 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, 0.1s 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 [2021-12-28 00:20:42,983 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/freire2_valuebound2.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 d2d6f9be66d27a1c9d3b3eaba0ccd86a9e6d263d5b40883199c2e280efc7ebbe --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 00:20:44,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 00:20:44,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 00:20:44,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 00:20:44,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 00:20:44,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 00:20:44,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 00:20:44,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 00:20:44,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 00:20:44,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 00:20:44,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 00:20:44,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 00:20:44,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 00:20:44,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 00:20:44,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 00:20:44,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 00:20:44,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 00:20:44,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 00:20:44,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 00:20:44,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 00:20:44,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 00:20:44,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 00:20:44,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 00:20:44,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 00:20:44,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 00:20:44,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 00:20:44,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 00:20:44,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 00:20:44,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 00:20:44,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 00:20:44,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 00:20:44,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 00:20:44,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 00:20:44,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 00:20:44,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 00:20:44,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 00:20:44,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 00:20:44,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 00:20:44,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 00:20:44,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 00:20:44,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 00:20:44,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-28 00:20:44,957 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 00:20:44,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 00:20:44,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 00:20:44,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 00:20:44,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 00:20:44,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 00:20:44,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 00:20:44,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 00:20:44,961 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 00:20:44,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 00:20:44,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 00:20:44,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 00:20:44,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 00:20:44,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 00:20:44,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 00:20:44,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 00:20:44,964 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 00:20:44,964 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-28 00:20:44,964 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-28 00:20:44,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 00:20:44,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 00:20:44,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 00:20:44,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 00:20:44,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 00:20:44,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 00:20:44,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 00:20:44,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:20:44,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 00:20:44,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 00:20:44,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 00:20:44,967 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-28 00:20:44,967 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-28 00:20:44,968 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 00:20:44,968 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 00:20:44,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 00:20:44,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-28 00:20:44,968 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2d6f9be66d27a1c9d3b3eaba0ccd86a9e6d263d5b40883199c2e280efc7ebbe [2021-12-28 00:20:45,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 00:20:45,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 00:20:45,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 00:20:45,328 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 00:20:45,328 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 00:20:45,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2021-12-28 00:20:45,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed78abb0/a5a09bd3a628428ba473a4572903153a/FLAGe369fbc07 [2021-12-28 00:20:45,818 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 00:20:45,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound2.c [2021-12-28 00:20:45,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed78abb0/a5a09bd3a628428ba473a4572903153a/FLAGe369fbc07 [2021-12-28 00:20:45,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed78abb0/a5a09bd3a628428ba473a4572903153a [2021-12-28 00:20:45,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 00:20:45,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 00:20:45,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 00:20:45,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 00:20:45,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 00:20:45,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:20:45" (1/1) ... [2021-12-28 00:20:45,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c563a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:45, skipping insertion in model container [2021-12-28 00:20:45,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:20:45" (1/1) ... [2021-12-28 00:20:45,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 00:20:45,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 00:20:46,002 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/freire2_valuebound2.c[709,722] [2021-12-28 00:20:46,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:20:46,035 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 00:20:46,045 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/freire2_valuebound2.c[709,722] [2021-12-28 00:20:46,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:20:46,075 INFO L208 MainTranslator]: Completed translation [2021-12-28 00:20:46,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:46 WrapperNode [2021-12-28 00:20:46,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 00:20:46,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 00:20:46,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 00:20:46,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 00:20:46,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:46" (1/1) ... [2021-12-28 00:20:46,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:46" (1/1) ... [2021-12-28 00:20:46,112 INFO L137 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2021-12-28 00:20:46,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 00:20:46,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 00:20:46,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 00:20:46,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 00:20:46,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:46" (1/1) ... [2021-12-28 00:20:46,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:46" (1/1) ... [2021-12-28 00:20:46,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:46" (1/1) ... [2021-12-28 00:20:46,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:46" (1/1) ... [2021-12-28 00:20:46,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:46" (1/1) ... [2021-12-28 00:20:46,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:46" (1/1) ... [2021-12-28 00:20:46,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:46" (1/1) ... [2021-12-28 00:20:46,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 00:20:46,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 00:20:46,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 00:20:46,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 00:20:46,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:46" (1/1) ... [2021-12-28 00:20:46,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:20:46,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:20:46,164 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) [2021-12-28 00:20:46,166 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 [2021-12-28 00:20:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 00:20:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-28 00:20:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 00:20:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 00:20:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 00:20:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 00:20:46,265 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 00:20:46,266 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 00:20:48,640 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 00:20:48,646 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 00:20:48,646 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 00:20:48,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:20:48 BoogieIcfgContainer [2021-12-28 00:20:48,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 00:20:48,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 00:20:48,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 00:20:48,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 00:20:48,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 12:20:45" (1/3) ... [2021-12-28 00:20:48,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a446364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:20:48, skipping insertion in model container [2021-12-28 00:20:48,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:20:46" (2/3) ... [2021-12-28 00:20:48,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a446364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:20:48, skipping insertion in model container [2021-12-28 00:20:48,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:20:48" (3/3) ... [2021-12-28 00:20:48,655 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound2.c [2021-12-28 00:20:48,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 00:20:48,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 00:20:48,720 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 00:20:48,729 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 [2021-12-28 00:20:48,730 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 00:20:48,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-28 00:20:48,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 00:20:48,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:20:48,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:20:48,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:20:48,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:20:48,765 INFO L85 PathProgramCache]: Analyzing trace with hash -589224774, now seen corresponding path program 1 times [2021-12-28 00:20:48,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 00:20:48,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67157060] [2021-12-28 00:20:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:20:48,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 00:20:48,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 00:20:48,775 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) [2021-12-28 00:20:48,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-28 00:20:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:20:48,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 00:20:48,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:20:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 00:20:48,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:20:48,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 00:20:48,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67157060] [2021-12-28 00:20:48,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67157060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:20:48,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:20:48,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 00:20:48,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670460549] [2021-12-28 00:20:48,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:20:48,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 00:20:48,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 00:20:49,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 00:20:49,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 00:20:49,028 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2021-12-28 00:20:49,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:20:49,050 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2021-12-28 00:20:49,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 00:20:49,053 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 [2021-12-28 00:20:49,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:20:49,062 INFO L225 Difference]: With dead ends: 41 [2021-12-28 00:20:49,062 INFO L226 Difference]: Without dead ends: 18 [2021-12-28 00:20:49,064 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 [2021-12-28 00:20:49,068 INFO L933 BasicCegarLoop]: 27 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, 27 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 [2021-12-28 00:20:49,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:20:49,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-28 00:20:49,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-28 00:20:49,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-28 00:20:49,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2021-12-28 00:20:49,101 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2021-12-28 00:20:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:20:49,101 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2021-12-28 00:20:49,101 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) [2021-12-28 00:20:49,102 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2021-12-28 00:20:49,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 00:20:49,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:20:49,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:20:49,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-28 00:20:49,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 00:20:49,303 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:20:49,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:20:49,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1187450884, now seen corresponding path program 1 times [2021-12-28 00:20:49,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 00:20:49,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241109826] [2021-12-28 00:20:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:20:49,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 00:20:49,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 00:20:49,307 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) [2021-12-28 00:20:49,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-28 00:20:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:20:49,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 00:20:49,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:20:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 00:20:49,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:20:49,657 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 00:20:49,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241109826] [2021-12-28 00:20:49,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241109826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:20:49,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:20:49,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 00:20:49,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870343911] [2021-12-28 00:20:49,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:20:49,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 00:20:49,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 00:20:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 00:20:49,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 00:20:49,661 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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) [2021-12-28 00:20:52,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-28 00:20:54,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-28 00:20:56,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-28 00:20:59,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-28 00:21:01,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-28 00:21:04,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-28 00:21:07,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-28 00:21:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:21:07,216 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-12-28 00:21:07,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 00:21:07,344 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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 [2021-12-28 00:21:07,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:21:07,346 INFO L225 Difference]: With dead ends: 33 [2021-12-28 00:21:07,346 INFO L226 Difference]: Without dead ends: 31 [2021-12-28 00:21:07,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-28 00:21:07,347 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-12-28 00:21:07,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 72 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 7 Unknown, 0 Unchecked, 17.5s Time] [2021-12-28 00:21:07,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-28 00:21:07,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2021-12-28 00:21:07,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-28 00:21:07,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-12-28 00:21:07,356 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 9 [2021-12-28 00:21:07,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:21:07,356 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-12-28 00:21:07,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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) [2021-12-28 00:21:07,356 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-12-28 00:21:07,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-28 00:21:07,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:21:07,357 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:21:07,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-28 00:21:07,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 00:21:07,570 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:21:07,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:21:07,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1170702338, now seen corresponding path program 1 times [2021-12-28 00:21:07,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 00:21:07,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817276910] [2021-12-28 00:21:07,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:21:07,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 00:21:07,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 00:21:07,573 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 00:21:07,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-28 00:21:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:21:08,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 00:21:08,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:21:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 00:21:10,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 00:21:16,772 WARN L838 $PredicateComparison]: unable to prove that (= (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~r~0#1|) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32)) is different from false [2021-12-28 00:21:18,819 WARN L860 $PredicateComparison]: unable to prove that (= (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~r~0#1|) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32)) is different from true [2021-12-28 00:21:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 00:21:51,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 00:21:51,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817276910] [2021-12-28 00:21:51,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817276910] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 00:21:51,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:21:51,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2021-12-28 00:21:51,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893145207] [2021-12-28 00:21:51,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:21:51,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:21:51,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 00:21:51,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:21:51,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=99, Unknown=2, NotChecked=20, Total=156 [2021-12-28 00:21:51,928 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 00:21:52,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 00:21:57,361 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (let ((.cse0 (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~a~0#1|))) (and (= (bvadd ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode .cse0 .cse0)) (_ bv1 32)) (_ bv1 32)) (= (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~x~0#1|) .cse0)) (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~r~0#1|) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32))))) is different from false [2021-12-28 00:21:59,427 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (let ((.cse0 (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~a~0#1|))) (and (= (bvadd ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode .cse0 .cse0)) (_ bv1 32)) (_ bv1 32)) (= (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~x~0#1|) .cse0)) (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~r~0#1|) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32))))) is different from true