./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.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 6d1ee9b66acccde8e4802bcc3b75479d1ab3cc8ee3ff178f121f64cc868a595d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:37:38,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:37:38,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:37:38,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:37:38,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:37:38,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:37:38,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:37:38,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:37:38,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:37:38,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:37:38,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:37:38,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:37:38,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:37:38,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:37:38,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:37:38,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:37:38,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:37:38,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:37:38,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:37:38,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:37:38,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:37:38,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:37:38,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:37:38,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:37:38,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:37:38,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:37:38,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:37:38,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:37:38,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:37:38,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:37:38,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:37:38,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:37:38,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:37:38,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:37:38,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:37:38,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:37:38,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:37:38,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:37:38,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:37:38,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:37:38,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:37:38,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:37:38,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:37:38,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:37:38,201 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:37:38,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:37:38,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:37:38,202 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:37:38,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:37:38,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:37:38,203 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:37:38,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:37:38,204 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:37:38,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:37:38,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:37:38,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:37:38,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:37:38,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:37:38,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:37:38,205 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:37:38,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:37:38,205 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:37:38,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:37:38,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:37:38,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:37:38,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:37:38,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:37:38,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:37:38,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:37:38,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:37:38,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:37:38,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:37:38,207 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:37:38,208 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:37:38,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:37:38,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:37:38,208 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d1ee9b66acccde8e4802bcc3b75479d1ab3cc8ee3ff178f121f64cc868a595d [2021-12-21 12:37:38,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:37:38,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:37:38,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:37:38,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:37:38,435 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:37:38,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c [2021-12-21 12:37:38,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174293bc2/eba167658f734121822161d9f597a76f/FLAGcb9af9c60 [2021-12-21 12:37:38,806 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:37:38,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c [2021-12-21 12:37:38,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174293bc2/eba167658f734121822161d9f597a76f/FLAGcb9af9c60 [2021-12-21 12:37:39,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174293bc2/eba167658f734121822161d9f597a76f [2021-12-21 12:37:39,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:37:39,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:37:39,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:37:39,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:37:39,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:37:39,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:37:39" (1/1) ... [2021-12-21 12:37:39,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63487ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:39, skipping insertion in model container [2021-12-21 12:37:39,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:37:39" (1/1) ... [2021-12-21 12:37:39,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:37:39,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:37:39,367 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c[712,725] [2021-12-21 12:37:39,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:37:39,382 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:37:39,389 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c[712,725] [2021-12-21 12:37:39,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:37:39,401 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:37:39,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:39 WrapperNode [2021-12-21 12:37:39,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:37:39,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:37:39,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:37:39,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:37:39,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:39" (1/1) ... [2021-12-21 12:37:39,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:39" (1/1) ... [2021-12-21 12:37:39,421 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2021-12-21 12:37:39,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:37:39,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:37:39,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:37:39,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:37:39,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:39" (1/1) ... [2021-12-21 12:37:39,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:39" (1/1) ... [2021-12-21 12:37:39,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:39" (1/1) ... [2021-12-21 12:37:39,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:39" (1/1) ... [2021-12-21 12:37:39,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:39" (1/1) ... [2021-12-21 12:37:39,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:39" (1/1) ... [2021-12-21 12:37:39,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:39" (1/1) ... [2021-12-21 12:37:39,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:37:39,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:37:39,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:37:39,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:37:39,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:39" (1/1) ... [2021-12-21 12:37:39,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:37:39,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:37:39,458 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) [2021-12-21 12:37:39,467 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 [2021-12-21 12:37:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:37:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:37:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:37:39,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:37:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 12:37:39,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 12:37:39,531 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:37:39,532 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:37:39,633 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:37:39,637 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:37:39,639 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:37:39,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:37:39 BoogieIcfgContainer [2021-12-21 12:37:39,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:37:39,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:37:39,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:37:39,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:37:39,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:37:39" (1/3) ... [2021-12-21 12:37:39,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b80a974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:37:39, skipping insertion in model container [2021-12-21 12:37:39,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:39" (2/3) ... [2021-12-21 12:37:39,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b80a974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:37:39, skipping insertion in model container [2021-12-21 12:37:39,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:37:39" (3/3) ... [2021-12-21 12:37:39,649 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound100.c [2021-12-21 12:37:39,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:37:39,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:37:39,693 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:37:39,699 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 [2021-12-21 12:37:39,700 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:37:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 12:37:39,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 12:37:39,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:37:39,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:37:39,723 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:37:39,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:37:39,727 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2021-12-21 12:37:39,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:37:39,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932801535] [2021-12-21 12:37:39,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:37:39,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:37:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:37:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:37:39,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:37:39,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932801535] [2021-12-21 12:37:39,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932801535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:37:39,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:37:39,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 12:37:39,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358100864] [2021-12-21 12:37:39,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:37:39,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 12:37:39,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:37:39,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 12:37:39,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:37:39,894 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:37:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:37:39,911 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-12-21 12:37:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 12:37:39,913 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 [2021-12-21 12:37:39,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:37:39,932 INFO L225 Difference]: With dead ends: 33 [2021-12-21 12:37:39,939 INFO L226 Difference]: Without dead ends: 14 [2021-12-21 12:37:39,941 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 [2021-12-21 12:37:39,945 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:37:39,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:37:39,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-21 12:37:39,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-21 12:37:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 12:37:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-21 12:37:39,973 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2021-12-21 12:37:39,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:37:39,974 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-21 12:37:39,974 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) [2021-12-21 12:37:39,974 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-21 12:37:39,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 12:37:39,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:37:39,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:37:39,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:37:39,976 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:37:39,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:37:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2021-12-21 12:37:39,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:37:39,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694988481] [2021-12-21 12:37:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:37:39,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:37:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 12:37:40,010 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 12:37:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 12:37:40,040 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 12:37:40,040 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 12:37:40,042 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 12:37:40,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 12:37:40,048 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-21 12:37:40,050 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 12:37:40,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 12:37:40 BoogieIcfgContainer [2021-12-21 12:37:40,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 12:37:40,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 12:37:40,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 12:37:40,069 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 12:37:40,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:37:39" (3/4) ... [2021-12-21 12:37:40,071 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 12:37:40,072 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 12:37:40,073 INFO L158 Benchmark]: Toolchain (without parser) took 836.47ms. Allocated memory is still 98.6MB. Free memory was 66.3MB in the beginning and 40.5MB in the end (delta: 25.9MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2021-12-21 12:37:40,073 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory is still 32.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:37:40,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.40ms. Allocated memory is still 98.6MB. Free memory was 66.1MB in the beginning and 75.2MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 12:37:40,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.77ms. Allocated memory is still 98.6MB. Free memory was 75.2MB in the beginning and 73.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 12:37:40,076 INFO L158 Benchmark]: Boogie Preprocessor took 11.97ms. Allocated memory is still 98.6MB. Free memory was 73.5MB in the beginning and 72.6MB in the end (delta: 966.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:37:40,078 INFO L158 Benchmark]: RCFGBuilder took 206.41ms. Allocated memory is still 98.6MB. Free memory was 72.6MB in the beginning and 63.5MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 12:37:40,078 INFO L158 Benchmark]: TraceAbstraction took 425.84ms. Allocated memory is still 98.6MB. Free memory was 63.1MB in the beginning and 40.5MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-21 12:37:40,079 INFO L158 Benchmark]: Witness Printer took 3.30ms. Allocated memory is still 98.6MB. Free memory is still 40.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:37:40,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory is still 32.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 163.40ms. Allocated memory is still 98.6MB. Free memory was 66.1MB in the beginning and 75.2MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.77ms. Allocated memory is still 98.6MB. Free memory was 75.2MB in the beginning and 73.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.97ms. Allocated memory is still 98.6MB. Free memory was 73.5MB in the beginning and 72.6MB in the end (delta: 966.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 206.41ms. Allocated memory is still 98.6MB. Free memory was 72.6MB in the beginning and 63.5MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 425.84ms. Allocated memory is still 98.6MB. Free memory was 63.1MB in the beginning and 40.5MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.30ms. Allocated memory is still 98.6MB. Free memory is still 40.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=100) [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=100) [L29] x = a / 2.0 [L30] r = 0 VAL [r=0] [L32] COND TRUE 1 VAL [r=0] [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 19 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-21 12:37:40,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.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 6d1ee9b66acccde8e4802bcc3b75479d1ab3cc8ee3ff178f121f64cc868a595d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:37:41,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:37:41,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:37:41,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:37:41,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:37:41,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:37:41,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:37:41,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:37:41,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:37:41,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:37:41,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:37:41,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:37:41,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:37:41,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:37:41,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:37:41,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:37:41,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:37:41,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:37:41,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:37:41,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:37:41,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:37:41,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:37:41,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:37:41,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:37:41,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:37:41,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:37:41,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:37:41,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:37:41,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:37:41,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:37:41,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:37:41,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:37:41,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:37:41,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:37:41,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:37:41,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:37:41,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:37:41,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:37:41,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:37:41,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:37:41,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:37:41,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-21 12:37:41,956 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:37:41,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:37:41,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:37:41,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:37:41,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:37:41,960 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:37:41,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:37:41,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:37:41,961 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:37:41,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:37:41,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:37:41,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:37:41,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:37:41,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:37:41,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:37:41,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:37:41,963 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 12:37:41,963 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 12:37:41,963 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 12:37:41,963 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:37:41,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:37:41,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:37:41,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:37:41,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:37:41,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:37:41,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:37:41,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:37:41,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:37:41,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:37:41,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:37:41,971 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 12:37:41,971 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 12:37:41,971 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:37:41,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:37:41,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:37:41,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:37:41,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 12:37:41,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d1ee9b66acccde8e4802bcc3b75479d1ab3cc8ee3ff178f121f64cc868a595d [2021-12-21 12:37:42,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:37:42,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:37:42,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:37:42,205 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:37:42,207 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:37:42,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c [2021-12-21 12:37:42,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f7aac89/b68940fca4564c5bb9ecba3adbfd47e0/FLAG4bdf04bea [2021-12-21 12:37:42,601 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:37:42,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c [2021-12-21 12:37:42,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f7aac89/b68940fca4564c5bb9ecba3adbfd47e0/FLAG4bdf04bea [2021-12-21 12:37:42,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f7aac89/b68940fca4564c5bb9ecba3adbfd47e0 [2021-12-21 12:37:42,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:37:42,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:37:42,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:37:42,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:37:42,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:37:42,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:37:42" (1/1) ... [2021-12-21 12:37:42,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b351902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:42, skipping insertion in model container [2021-12-21 12:37:42,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:37:42" (1/1) ... [2021-12-21 12:37:42,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:37:42,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:37:42,722 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c[712,725] [2021-12-21 12:37:42,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:37:42,737 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:37:42,745 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c[712,725] [2021-12-21 12:37:42,748 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:37:42,769 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:37:42,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:42 WrapperNode [2021-12-21 12:37:42,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:37:42,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:37:42,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:37:42,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:37:42,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:42" (1/1) ... [2021-12-21 12:37:42,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:42" (1/1) ... [2021-12-21 12:37:42,803 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2021-12-21 12:37:42,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:37:42,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:37:42,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:37:42,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:37:42,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:42" (1/1) ... [2021-12-21 12:37:42,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:42" (1/1) ... [2021-12-21 12:37:42,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:42" (1/1) ... [2021-12-21 12:37:42,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:42" (1/1) ... [2021-12-21 12:37:42,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:42" (1/1) ... [2021-12-21 12:37:42,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:42" (1/1) ... [2021-12-21 12:37:42,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:42" (1/1) ... [2021-12-21 12:37:42,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:37:42,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:37:42,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:37:42,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:37:42,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:42" (1/1) ... [2021-12-21 12:37:42,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:37:42,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:37:42,847 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) [2021-12-21 12:37:42,853 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 [2021-12-21 12:37:42,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:37:42,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 12:37:42,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:37:42,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:37:42,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 12:37:42,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 12:37:42,917 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:37:42,918 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:37:43,622 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:37:43,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:37:43,627 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:37:43,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:37:43 BoogieIcfgContainer [2021-12-21 12:37:43,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:37:43,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:37:43,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:37:43,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:37:43,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:37:42" (1/3) ... [2021-12-21 12:37:43,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781a8fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:37:43, skipping insertion in model container [2021-12-21 12:37:43,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:37:42" (2/3) ... [2021-12-21 12:37:43,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781a8fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:37:43, skipping insertion in model container [2021-12-21 12:37:43,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:37:43" (3/3) ... [2021-12-21 12:37:43,634 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound100.c [2021-12-21 12:37:43,637 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:37:43,638 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:37:43,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:37:43,672 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 [2021-12-21 12:37:43,673 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:37:43,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 12:37:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 12:37:43,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:37:43,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:37:43,686 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:37:43,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:37:43,690 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2021-12-21 12:37:43,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 12:37:43,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582381622] [2021-12-21 12:37:43,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:37:43,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 12:37:43,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 12:37:43,701 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) [2021-12-21 12:37:43,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 12:37:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:37:44,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 12:37:44,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:37:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:37:44,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:37:44,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 12:37:44,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582381622] [2021-12-21 12:37:44,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582381622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:37:44,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:37:44,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 12:37:44,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724241153] [2021-12-21 12:37:44,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:37:44,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 12:37:44,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 12:37:44,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 12:37:44,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:37:44,094 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:37:44,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:37:44,107 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-12-21 12:37:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 12:37:44,110 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 [2021-12-21 12:37:44,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:37:44,116 INFO L225 Difference]: With dead ends: 33 [2021-12-21 12:37:44,116 INFO L226 Difference]: Without dead ends: 14 [2021-12-21 12:37:44,119 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 [2021-12-21 12:37:44,124 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:37:44,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:37:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-21 12:37:44,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-21 12:37:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 12:37:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-21 12:37:44,154 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2021-12-21 12:37:44,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:37:44,154 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-21 12:37:44,155 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) [2021-12-21 12:37:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-21 12:37:44,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 12:37:44,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:37:44,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:37:44,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-21 12:37:44,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 12:37:44,371 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:37:44,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:37:44,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2021-12-21 12:37:44,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 12:37:44,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147476517] [2021-12-21 12:37:44,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:37:44,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 12:37:44,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 12:37:44,375 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) [2021-12-21 12:37:44,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 12:37:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:37:45,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 12:37:45,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:37:59,122 WARN L227 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-21 12:38:43,770 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (or (and (not .cse0) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and .cse0 (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse1) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv100 32)))))) is different from false [2021-12-21 12:38:45,815 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (or (and (not .cse0) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and .cse0 (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse1) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv100 32)))))) is different from true