./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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_valuebound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff5daa36c47d3acf04ff127d3f9a6e17688f7f254f16d34cb2769aec1ca052fe --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 17:27:47,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 17:27:47,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 17:27:47,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 17:27:47,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 17:27:47,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 17:27:47,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 17:27:47,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 17:27:47,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 17:27:47,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 17:27:47,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 17:27:47,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 17:27:47,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 17:27:47,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 17:27:47,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 17:27:47,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 17:27:47,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 17:27:47,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 17:27:47,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 17:27:47,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 17:27:47,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 17:27:47,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 17:27:47,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 17:27:47,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 17:27:47,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 17:27:47,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 17:27:47,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 17:27:47,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 17:27:47,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 17:27:47,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 17:27:47,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 17:27:47,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 17:27:47,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 17:27:47,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 17:27:47,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 17:27:47,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 17:27:47,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 17:27:47,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 17:27:47,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 17:27:47,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 17:27:47,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 17:27:47,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 17:27:47,570 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 17:27:47,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 17:27:47,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 17:27:47,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 17:27:47,571 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 17:27:47,571 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 17:27:47,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 17:27:47,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 17:27:47,572 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 17:27:47,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 17:27:47,573 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 17:27:47,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 17:27:47,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 17:27:47,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 17:27:47,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 17:27:47,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 17:27:47,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 17:27:47,574 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 17:27:47,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 17:27:47,574 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 17:27:47,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 17:27:47,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 17:27:47,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 17:27:47,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 17:27:47,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:27:47,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 17:27:47,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 17:27:47,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 17:27:47,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 17:27:47,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 17:27:47,576 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 17:27:47,576 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 17:27:47,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 17:27:47,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff5daa36c47d3acf04ff127d3f9a6e17688f7f254f16d34cb2769aec1ca052fe [2022-02-20 17:27:47,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 17:27:47,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 17:27:47,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 17:27:47,804 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 17:27:47,804 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 17:27:47,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2022-02-20 17:27:47,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240a5d07d/e7ec15fccc664721b8f0550d245af45e/FLAG80481c396 [2022-02-20 17:27:48,226 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 17:27:48,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2022-02-20 17:27:48,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240a5d07d/e7ec15fccc664721b8f0550d245af45e/FLAG80481c396 [2022-02-20 17:27:48,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240a5d07d/e7ec15fccc664721b8f0550d245af45e [2022-02-20 17:27:48,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 17:27:48,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 17:27:48,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 17:27:48,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 17:27:48,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 17:27:48,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:27:48" (1/1) ... [2022-02-20 17:27:48,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11252b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:48, skipping insertion in model container [2022-02-20 17:27:48,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:27:48" (1/1) ... [2022-02-20 17:27:48,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 17:27:48,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 17:27:48,406 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_valuebound1.c[709,722] [2022-02-20 17:27:48,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:27:48,434 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 17:27:48,442 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_valuebound1.c[709,722] [2022-02-20 17:27:48,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:27:48,459 INFO L208 MainTranslator]: Completed translation [2022-02-20 17:27:48,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:48 WrapperNode [2022-02-20 17:27:48,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 17:27:48,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 17:27:48,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 17:27:48,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 17:27:48,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:48" (1/1) ... [2022-02-20 17:27:48,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:48" (1/1) ... [2022-02-20 17:27:48,504 INFO L137 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2022-02-20 17:27:48,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 17:27:48,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 17:27:48,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 17:27:48,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 17:27:48,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:48" (1/1) ... [2022-02-20 17:27:48,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:48" (1/1) ... [2022-02-20 17:27:48,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:48" (1/1) ... [2022-02-20 17:27:48,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:48" (1/1) ... [2022-02-20 17:27:48,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:48" (1/1) ... [2022-02-20 17:27:48,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:48" (1/1) ... [2022-02-20 17:27:48,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:48" (1/1) ... [2022-02-20 17:27:48,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 17:27:48,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 17:27:48,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 17:27:48,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 17:27:48,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:48" (1/1) ... [2022-02-20 17:27:48,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:27:48,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:27:48,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 17:27:48,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 17:27:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 17:27:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 17:27:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 17:27:48,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 17:27:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-20 17:27:48,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-20 17:27:48,612 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 17:27:48,613 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 17:27:48,695 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 17:27:48,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 17:27:48,700 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 17:27:48,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:27:48 BoogieIcfgContainer [2022-02-20 17:27:48,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 17:27:48,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 17:27:48,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 17:27:48,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 17:27:48,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 05:27:48" (1/3) ... [2022-02-20 17:27:48,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f7cdd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:27:48, skipping insertion in model container [2022-02-20 17:27:48,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:48" (2/3) ... [2022-02-20 17:27:48,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f7cdd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:27:48, skipping insertion in model container [2022-02-20 17:27:48,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:27:48" (3/3) ... [2022-02-20 17:27:48,710 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound1.c [2022-02-20 17:27:48,718 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 17:27:48,718 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 17:27:48,760 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 17:27:48,765 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 [2022-02-20 17:27:48,765 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 17:27:48,791 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) [2022-02-20 17:27:48,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:27:48,794 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:27:48,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:27:48,795 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:27:48,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:27:48,798 INFO L85 PathProgramCache]: Analyzing trace with hash -589224774, now seen corresponding path program 1 times [2022-02-20 17:27:48,807 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:27:48,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556529135] [2022-02-20 17:27:48,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:27:48,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:27:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:27:48,905 INFO L290 TraceCheckUtils]: 0: Hoare triple {25#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {25#true} is VALID [2022-02-20 17:27:48,905 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_~r~0#1, main_~a~0#1, main_~x~0#1, main_~s~0#1;havoc main_~r~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_~s~0#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~someBinaryDOUBLEComparisonOperation(main_~a~0#1, ~convertINTToDOUBLE(0)) && ~someBinaryDOUBLEComparisonOperation(main_~a~0#1, ~convertINTToDOUBLE(1)) then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {25#true} is VALID [2022-02-20 17:27:48,906 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} assume 0 == assume_abort_if_not_~cond#1;assume false; {26#false} is VALID [2022-02-20 17:27:48,906 INFO L290 TraceCheckUtils]: 3: Hoare triple {26#false} assume { :end_inline_assume_abort_if_not } true;main_~x~0#1 := main_~a~0#1;main_~s~0#1 := 3.25;main_~r~0#1 := 1; {26#false} is VALID [2022-02-20 17:27:48,906 INFO L290 TraceCheckUtils]: 4: Hoare triple {26#false} assume false; {26#false} is VALID [2022-02-20 17:27:48,907 INFO L272 TraceCheckUtils]: 5: Hoare triple {26#false} call __VERIFIER_assert((if 1 == ~convertDOUBLEToINT(~someBinaryArithmeticDOUBLEoperation(~convertINTToDOUBLE(4), main_~s~0#1)) - 12 * main_~r~0#1 * main_~r~0#1 then 1 else 0)); {26#false} is VALID [2022-02-20 17:27:48,907 INFO L290 TraceCheckUtils]: 6: Hoare triple {26#false} ~cond := #in~cond; {26#false} is VALID [2022-02-20 17:27:48,907 INFO L290 TraceCheckUtils]: 7: Hoare triple {26#false} assume 0 == ~cond; {26#false} is VALID [2022-02-20 17:27:48,907 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#false} assume !false; {26#false} is VALID [2022-02-20 17:27:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 17:27:48,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 17:27:48,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556529135] [2022-02-20 17:27:48,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556529135] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:27:48,909 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:27:48,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 17:27:48,910 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719097517] [2022-02-20 17:27:48,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:27:48,914 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 [2022-02-20 17:27:48,915 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:27:48,917 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 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) [2022-02-20 17:27:48,926 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:27:48,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 17:27:48,927 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 17:27:48,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 17:27:48,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 17:27:48,944 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) [2022-02-20 17:27:48,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:27:48,981 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2022-02-20 17:27:48,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 17:27:48,982 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 [2022-02-20 17:27:48,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:27:48,983 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-02-20 17:27:48,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2022-02-20 17:27:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-02-20 17:27:48,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2022-02-20 17:27:48,995 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 64 transitions. [2022-02-20 17:27:49,091 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 64 edges. 64 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:27:49,097 INFO L225 Difference]: With dead ends: 41 [2022-02-20 17:27:49,097 INFO L226 Difference]: Without dead ends: 18 [2022-02-20 17:27:49,099 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 [2022-02-20 17:27:49,101 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 [2022-02-20 17:27:49,102 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] [2022-02-20 17:27:49,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-02-20 17:27:49,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-02-20 17:27:49,121 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:27:49,121 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second 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) [2022-02-20 17:27:49,122 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second 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) [2022-02-20 17:27:49,122 INFO L87 Difference]: Start difference. First operand 18 states. Second 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) [2022-02-20 17:27:49,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:27:49,125 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-02-20 17:27:49,125 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-02-20 17:27:49,125 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:27:49,126 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:27:49,126 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 18 states. [2022-02-20 17:27:49,126 INFO L87 Difference]: Start difference. First 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) Second operand 18 states. [2022-02-20 17:27:49,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:27:49,129 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-02-20 17:27:49,129 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-02-20 17:27:49,129 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:27:49,129 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:27:49,129 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:27:49,130 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:27:49,130 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) [2022-02-20 17:27:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-02-20 17:27:49,133 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2022-02-20 17:27:49,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:27:49,133 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-02-20 17:27:49,133 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) [2022-02-20 17:27:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-02-20 17:27:49,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:27:49,134 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:27:49,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:27:49,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 17:27:49,134 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:27:49,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:27:49,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1187450884, now seen corresponding path program 1 times [2022-02-20 17:27:49,135 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:27:49,135 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217264871] [2022-02-20 17:27:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:27:49,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:27:49,149 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-20 17:27:49,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647771924] [2022-02-20 17:27:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:27:49,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 17:27:49,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:27:49,155 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) [2022-02-20 17:27:49,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-20 17:27:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 17:27:49,188 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 17:27:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 17:27:49,205 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 17:27:49,206 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 17:27:49,207 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 17:27:49,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-20 17:27:49,426 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 [2022-02-20 17:27:49,429 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 17:27:49,431 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 17:27:49,438 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call __VERIFIER_assert((if 1 == ~convertDOUBLEToINT(~someBinaryArithmeticDOUBLEoperation(~convertINTToDOUBLE(4), ~s~0)) - 12 * ~r~0 * ~r~0 then 1 else 0)); [2022-02-20 17:27:49,438 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 17:27:49,441 INFO L158 Benchmark]: Toolchain (without parser) took 1191.61ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 50.8MB in the beginning and 65.3MB in the end (delta: -14.5MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-02-20 17:27:49,441 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory is still 67.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 17:27:49,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.26ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 50.6MB in the beginning and 85.8MB in the end (delta: -35.2MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2022-02-20 17:27:49,442 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.13ms. Allocated memory is still 111.1MB. Free memory was 85.8MB in the beginning and 84.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 17:27:49,442 INFO L158 Benchmark]: Boogie Preprocessor took 13.20ms. Allocated memory is still 111.1MB. Free memory was 84.0MB in the beginning and 82.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 17:27:49,443 INFO L158 Benchmark]: RCFGBuilder took 182.26ms. Allocated memory is still 111.1MB. Free memory was 82.9MB in the beginning and 73.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-20 17:27:49,443 INFO L158 Benchmark]: TraceAbstraction took 737.69ms. Allocated memory is still 111.1MB. Free memory was 72.5MB in the beginning and 65.3MB in the end (delta: 7.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-02-20 17:27:49,445 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory is still 67.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.26ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 50.6MB in the beginning and 85.8MB in the end (delta: -35.2MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.13ms. Allocated memory is still 111.1MB. Free memory was 85.8MB in the beginning and 84.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.20ms. Allocated memory is still 111.1MB. Free memory was 84.0MB in the beginning and 82.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 182.26ms. Allocated memory is still 111.1MB. Free memory was 82.9MB in the beginning and 73.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 737.69ms. Allocated memory is still 111.1MB. Free memory was 72.5MB in the beginning and 65.3MB in the end (delta: 7.2MB). Peak memory consumption was 8.5MB. 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 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 17:27:49,469 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 -ea -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_valuebound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff5daa36c47d3acf04ff127d3f9a6e17688f7f254f16d34cb2769aec1ca052fe --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 17:27:51,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 17:27:51,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 17:27:51,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 17:27:51,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 17:27:51,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 17:27:51,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 17:27:51,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 17:27:51,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 17:27:51,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 17:27:51,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 17:27:51,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 17:27:51,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 17:27:51,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 17:27:51,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 17:27:51,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 17:27:51,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 17:27:51,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 17:27:51,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 17:27:51,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 17:27:51,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 17:27:51,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 17:27:51,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 17:27:51,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 17:27:51,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 17:27:51,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 17:27:51,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 17:27:51,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 17:27:51,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 17:27:51,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 17:27:51,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 17:27:51,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 17:27:51,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 17:27:51,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 17:27:51,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 17:27:51,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 17:27:51,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 17:27:51,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 17:27:51,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 17:27:51,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 17:27:51,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 17:27:51,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 17:27:51,121 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 17:27:51,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 17:27:51,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 17:27:51,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 17:27:51,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 17:27:51,124 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 17:27:51,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 17:27:51,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 17:27:51,125 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 17:27:51,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 17:27:51,125 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 17:27:51,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 17:27:51,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 17:27:51,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 17:27:51,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 17:27:51,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 17:27:51,126 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 17:27:51,126 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 17:27:51,127 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 17:27:51,127 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 17:27:51,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 17:27:51,127 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 17:27:51,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 17:27:51,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 17:27:51,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 17:27:51,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 17:27:51,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:27:51,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 17:27:51,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 17:27:51,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 17:27:51,128 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 17:27:51,128 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 17:27:51,129 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 17:27:51,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 17:27:51,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 17:27:51,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 17:27:51,129 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff5daa36c47d3acf04ff127d3f9a6e17688f7f254f16d34cb2769aec1ca052fe [2022-02-20 17:27:51,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 17:27:51,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 17:27:51,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 17:27:51,405 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 17:27:51,407 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 17:27:51,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2022-02-20 17:27:51,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f107887f8/19337ab2dd9e49aa95a5381e20ced628/FLAG0691ba1f1 [2022-02-20 17:27:51,818 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 17:27:51,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2022-02-20 17:27:51,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f107887f8/19337ab2dd9e49aa95a5381e20ced628/FLAG0691ba1f1 [2022-02-20 17:27:51,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f107887f8/19337ab2dd9e49aa95a5381e20ced628 [2022-02-20 17:27:51,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 17:27:51,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 17:27:51,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 17:27:51,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 17:27:51,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 17:27:51,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:27:51" (1/1) ... [2022-02-20 17:27:51,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0cb6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:51, skipping insertion in model container [2022-02-20 17:27:51,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:27:51" (1/1) ... [2022-02-20 17:27:51,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 17:27:51,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 17:27:51,987 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_valuebound1.c[709,722] [2022-02-20 17:27:52,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:27:52,062 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 17:27:52,074 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_valuebound1.c[709,722] [2022-02-20 17:27:52,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:27:52,116 INFO L208 MainTranslator]: Completed translation [2022-02-20 17:27:52,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:52 WrapperNode [2022-02-20 17:27:52,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 17:27:52,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 17:27:52,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 17:27:52,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 17:27:52,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:52" (1/1) ... [2022-02-20 17:27:52,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:52" (1/1) ... [2022-02-20 17:27:52,166 INFO L137 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2022-02-20 17:27:52,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 17:27:52,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 17:27:52,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 17:27:52,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 17:27:52,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:52" (1/1) ... [2022-02-20 17:27:52,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:52" (1/1) ... [2022-02-20 17:27:52,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:52" (1/1) ... [2022-02-20 17:27:52,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:52" (1/1) ... [2022-02-20 17:27:52,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:52" (1/1) ... [2022-02-20 17:27:52,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:52" (1/1) ... [2022-02-20 17:27:52,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:52" (1/1) ... [2022-02-20 17:27:52,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 17:27:52,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 17:27:52,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 17:27:52,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 17:27:52,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:52" (1/1) ... [2022-02-20 17:27:52,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:27:52,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:27:52,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 17:27:52,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 17:27:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 17:27:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 17:27:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 17:27:52,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 17:27:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-20 17:27:52,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-20 17:27:52,291 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 17:27:52,293 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 17:27:52,842 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 17:27:52,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 17:27:52,847 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 17:27:52,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:27:52 BoogieIcfgContainer [2022-02-20 17:27:52,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 17:27:52,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 17:27:52,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 17:27:52,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 17:27:52,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 05:27:51" (1/3) ... [2022-02-20 17:27:52,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8ced25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:27:52, skipping insertion in model container [2022-02-20 17:27:52,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:52" (2/3) ... [2022-02-20 17:27:52,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8ced25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:27:52, skipping insertion in model container [2022-02-20 17:27:52,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:27:52" (3/3) ... [2022-02-20 17:27:52,854 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound1.c [2022-02-20 17:27:52,858 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 17:27:52,858 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 17:27:52,887 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 17:27:52,891 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 [2022-02-20 17:27:52,892 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 17:27:52,904 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) [2022-02-20 17:27:52,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:27:52,906 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:27:52,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:27:52,908 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:27:52,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:27:52,916 INFO L85 PathProgramCache]: Analyzing trace with hash -589224774, now seen corresponding path program 1 times [2022-02-20 17:27:52,926 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 17:27:52,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22606336] [2022-02-20 17:27:52,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:27:52,928 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 17:27:52,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 17:27:52,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 17:27:52,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 17:27:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:27:53,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2022-02-20 17:27:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:27:53,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 17:27:53,116 INFO L290 TraceCheckUtils]: 0: Hoare triple {25#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(10bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32); {25#true} is VALID [2022-02-20 17:27:53,117 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_~r~0#1, main_~a~0#1, main_~x~0#1, main_~s~0#1;havoc main_~r~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_~s~0#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~fp.geq~DOUBLE(main_~a~0#1, ~convertINTToDOUBLE(currentRoundingMode, 0bv32)) && ~fp.leq~DOUBLE(main_~a~0#1, ~convertINTToDOUBLE(currentRoundingMode, 1bv32)) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {25#true} is VALID [2022-02-20 17:27:53,117 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} assume 0bv32 == assume_abort_if_not_~cond#1;assume false; {26#false} is VALID [2022-02-20 17:27:53,118 INFO L290 TraceCheckUtils]: 3: Hoare triple {26#false} assume { :end_inline_assume_abort_if_not } true;main_~x~0#1 := main_~a~0#1;main_~s~0#1 := ~to_fp~DOUBLE(currentRoundingMode, 3.25);main_~r~0#1 := 1bv32; {26#false} is VALID [2022-02-20 17:27:53,118 INFO L290 TraceCheckUtils]: 4: Hoare triple {26#false} assume false; {26#false} is VALID [2022-02-20 17:27:53,118 INFO L272 TraceCheckUtils]: 5: Hoare triple {26#false} call __VERIFIER_assert((if 1bv32 == ~bvsub32(~convertDOUBLEToINT(~roundTowardZero, ~fp.mul~DOUBLE(currentRoundingMode, ~convertINTToDOUBLE(currentRoundingMode, 4bv32), main_~s~0#1)), ~bvmul32(~bvmul32(12bv32, main_~r~0#1), main_~r~0#1)) then 1bv32 else 0bv32)); {26#false} is VALID [2022-02-20 17:27:53,119 INFO L290 TraceCheckUtils]: 6: Hoare triple {26#false} ~cond := #in~cond; {26#false} is VALID [2022-02-20 17:27:53,120 INFO L290 TraceCheckUtils]: 7: Hoare triple {26#false} assume 0bv32 == ~cond; {26#false} is VALID [2022-02-20 17:27:53,120 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#false} assume !false; {26#false} is VALID [2022-02-20 17:27:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 17:27:53,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 17:27:53,122 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 17:27:53,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22606336] [2022-02-20 17:27:53,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22606336] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:27:53,124 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:27:53,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 17:27:53,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828645105] [2022-02-20 17:27:53,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:27:53,131 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 [2022-02-20 17:27:53,132 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:27:53,134 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 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) [2022-02-20 17:27:53,207 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:27:53,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 17:27:53,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 17:27:53,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 17:27:53,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 17:27:53,233 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) [2022-02-20 17:28:13,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:13,820 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2022-02-20 17:28:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 17:28:13,820 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 [2022-02-20 17:28:13,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:28:13,821 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-02-20 17:28:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2022-02-20 17:28:13,826 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-02-20 17:28:13,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2022-02-20 17:28:13,829 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 64 transitions. [2022-02-20 17:28:19,939 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 64 edges. 64 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:28:19,945 INFO L225 Difference]: With dead ends: 41 [2022-02-20 17:28:19,945 INFO L226 Difference]: Without dead ends: 18 [2022-02-20 17:28:19,947 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 [2022-02-20 17:28:19,949 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 [2022-02-20 17:28:19,950 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] [2022-02-20 17:28:19,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-02-20 17:28:19,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-02-20 17:28:19,976 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:28:19,976 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second 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) [2022-02-20 17:28:19,977 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second 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) [2022-02-20 17:28:19,978 INFO L87 Difference]: Start difference. First operand 18 states. Second 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) [2022-02-20 17:28:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:19,983 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-02-20 17:28:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-02-20 17:28:19,984 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:28:19,984 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:28:19,985 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 18 states. [2022-02-20 17:28:19,986 INFO L87 Difference]: Start difference. First 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) Second operand 18 states. [2022-02-20 17:28:19,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:19,993 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-02-20 17:28:19,993 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-02-20 17:28:19,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:28:19,993 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:28:19,994 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:28:19,994 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:28:19,994 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) [2022-02-20 17:28:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-02-20 17:28:20,003 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2022-02-20 17:28:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:28:20,004 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-02-20 17:28:20,005 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) [2022-02-20 17:28:20,007 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-02-20 17:28:20,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:28:20,007 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:28:20,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:28:20,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-02-20 17:28:20,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 17:28:20,233 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:28:20,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:28:20,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1187450884, now seen corresponding path program 1 times [2022-02-20 17:28:20,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 17:28:20,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084909866] [2022-02-20 17:28:20,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:28:20,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 17:28:20,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 17:28:20,236 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 17:28:20,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-02-20 17:28:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:28:20,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-20 17:28:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:28:20,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 17:28:20,873 INFO L290 TraceCheckUtils]: 0: Hoare triple {174#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(10bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32); {179#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2022-02-20 17:28:20,874 INFO L290 TraceCheckUtils]: 1: Hoare triple {179#(= currentRoundingMode roundNearestTiesToEven)} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_~r~0#1, main_~a~0#1, main_~x~0#1, main_~s~0#1;havoc main_~r~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_~s~0#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~fp.geq~DOUBLE(main_~a~0#1, ~convertINTToDOUBLE(currentRoundingMode, 0bv32)) && ~fp.leq~DOUBLE(main_~a~0#1, ~convertINTToDOUBLE(currentRoundingMode, 1bv32)) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {179#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2022-02-20 17:28:20,874 INFO L290 TraceCheckUtils]: 2: Hoare triple {179#(= currentRoundingMode roundNearestTiesToEven)} assume !(0bv32 == assume_abort_if_not_~cond#1); {179#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2022-02-20 17:28:20,875 INFO L290 TraceCheckUtils]: 3: Hoare triple {179#(= currentRoundingMode roundNearestTiesToEven)} assume { :end_inline_assume_abort_if_not } true;main_~x~0#1 := main_~a~0#1;main_~s~0#1 := ~to_fp~DOUBLE(currentRoundingMode, 3.25);main_~r~0#1 := 1bv32; {189#(and (= ((_ to_fp 11 53) currentRoundingMode (/ 13.0 4.0)) |ULTIMATE.start_main_~s~0#1|) (= |ULTIMATE.start_main_~r~0#1| (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven))} is VALID [2022-02-20 17:28:20,875 INFO L290 TraceCheckUtils]: 4: Hoare triple {189#(and (= ((_ to_fp 11 53) currentRoundingMode (/ 13.0 4.0)) |ULTIMATE.start_main_~s~0#1|) (= |ULTIMATE.start_main_~r~0#1| (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven))} assume !false; {189#(and (= ((_ to_fp 11 53) currentRoundingMode (/ 13.0 4.0)) |ULTIMATE.start_main_~s~0#1|) (= |ULTIMATE.start_main_~r~0#1| (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven))} is VALID [2022-02-20 17:28:20,876 INFO L272 TraceCheckUtils]: 5: Hoare triple {189#(and (= ((_ to_fp 11 53) currentRoundingMode (/ 13.0 4.0)) |ULTIMATE.start_main_~s~0#1|) (= |ULTIMATE.start_main_~r~0#1| (_ bv1 32)) (= currentRoundingMode roundNearestTiesToEven))} call __VERIFIER_assert((if 1bv32 == ~bvsub32(~convertDOUBLEToINT(~roundTowardZero, ~fp.mul~DOUBLE(currentRoundingMode, ~convertINTToDOUBLE(currentRoundingMode, 4bv32), main_~s~0#1)), ~bvmul32(~bvmul32(12bv32, main_~r~0#1), main_~r~0#1)) then 1bv32 else 0bv32)); {196#(= (_ bv1 32) |__VERIFIER_assert_#in~cond|)} is VALID [2022-02-20 17:28:20,877 INFO L290 TraceCheckUtils]: 6: Hoare triple {196#(= (_ bv1 32) |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {200#(= __VERIFIER_assert_~cond (_ bv1 32))} is VALID [2022-02-20 17:28:20,877 INFO L290 TraceCheckUtils]: 7: Hoare triple {200#(= __VERIFIER_assert_~cond (_ bv1 32))} assume 0bv32 == ~cond; {175#false} is VALID [2022-02-20 17:28:20,877 INFO L290 TraceCheckUtils]: 8: Hoare triple {175#false} assume !false; {175#false} is VALID [2022-02-20 17:28:20,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 17:28:20,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 17:28:20,878 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 17:28:20,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084909866] [2022-02-20 17:28:20,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084909866] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:28:20,878 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:28:20,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-20 17:28:20,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692301651] [2022-02-20 17:28:20,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:28:20,879 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 [2022-02-20 17:28:20,879 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:28:20,879 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 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) [2022-02-20 17:28:21,099 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:28:21,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-20 17:28:21,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 17:28:21,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-20 17:28:21,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-20 17:28:21,101 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) [2022-02-20 17:28:23,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 17:28:28,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 17:28:32,645 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 17:28:36,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 17:28:38,640 WARN L534 Checker$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 [] [2022-02-20 17:28:40,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 17:28:45,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 17:28:49,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 17:28:52,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 17:28:55,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 17:28:57,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []