./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.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_valuebound20.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 53908028cfc42f68f62c10378662b57f64149241c563947e258b97b254c402b4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 17:27:51,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 17:27:51,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 17:27:51,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 17:27:51,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 17:27:51,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 17:27:51,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 17:27:51,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 17:27:51,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 17:27:51,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 17:27:51,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 17:27:51,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 17:27:51,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 17:27:51,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 17:27:51,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 17:27:51,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 17:27:51,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 17:27:51,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 17:27:51,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 17:27:51,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 17:27:51,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 17:27:51,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 17:27:51,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 17:27:51,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 17:27:51,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 17:27:51,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 17:27:51,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 17:27:51,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 17:27:51,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 17:27:51,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 17:27:51,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 17:27:51,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 17:27:51,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 17:27:51,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 17:27:51,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 17:27:51,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 17:27:51,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 17:27:51,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 17:27:51,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 17:27:51,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 17:27:51,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 17:27:51,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 17:27:51,599 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 17:27:51,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 17:27:51,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 17:27:51,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 17:27:51,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 17:27:51,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 17:27:51,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 17:27:51,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 17:27:51,603 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 17:27:51,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 17:27:51,603 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 17:27:51,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 17:27:51,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 17:27:51,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 17:27:51,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 17:27:51,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 17:27:51,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 17:27:51,605 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 17:27:51,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 17:27:51,605 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 17:27:51,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 17:27:51,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 17:27:51,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 17:27:51,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 17:27:51,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:27:51,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 17:27:51,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 17:27:51,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 17:27:51,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 17:27:51,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 17:27:51,607 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 17:27:51,607 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 17:27:51,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 17:27:51,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53908028cfc42f68f62c10378662b57f64149241c563947e258b97b254c402b4 [2022-02-20 17:27:51,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 17:27:51,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 17:27:51,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 17:27:51,862 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 17:27:51,863 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 17:27:51,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2022-02-20 17:27:51,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97cfeaf56/5c4c5bcf23d54a3f96192ea731e4a73c/FLAGdc4762466 [2022-02-20 17:27:52,262 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 17:27:52,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2022-02-20 17:27:52,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97cfeaf56/5c4c5bcf23d54a3f96192ea731e4a73c/FLAGdc4762466 [2022-02-20 17:27:52,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97cfeaf56/5c4c5bcf23d54a3f96192ea731e4a73c [2022-02-20 17:27:52,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 17:27:52,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 17:27:52,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 17:27:52,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 17:27:52,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 17:27:52,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:27:52" (1/1) ... [2022-02-20 17:27:52,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b633cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:52, skipping insertion in model container [2022-02-20 17:27:52,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:27:52" (1/1) ... [2022-02-20 17:27:52,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 17:27:52,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 17:27:52,427 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_valuebound20.c[709,722] [2022-02-20 17:27:52,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:27:52,465 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 17:27:52,473 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_valuebound20.c[709,722] [2022-02-20 17:27:52,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:27:52,495 INFO L208 MainTranslator]: Completed translation [2022-02-20 17:27:52,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:52 WrapperNode [2022-02-20 17:27:52,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 17:27:52,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 17:27:52,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 17:27:52,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 17:27:52,501 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 17:27:52,513 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 17:27:52,533 INFO L137 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2022-02-20 17:27:52,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 17:27:52,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 17:27:52,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 17:27:52,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 17:27:52,539 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 17:27:52,539 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 17:27:52,541 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 17:27:52,542 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 17:27:52,551 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 17:27:52,554 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 17:27:52,555 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 17:27:52,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 17:27:52,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 17:27:52,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 17:27:52,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 17:27:52,558 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 17:27:52,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:27:52,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:27:52,605 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 17:27:52,607 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 17:27:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 17:27:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 17:27:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 17:27:52,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 17:27:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-20 17:27:52,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-20 17:27:52,706 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 17:27:52,708 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 17:27:52,795 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 17:27:52,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 17:27:52,800 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 17:27:52,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:27:52 BoogieIcfgContainer [2022-02-20 17:27:52,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 17:27:52,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 17:27:52,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 17:27:52,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 17:27:52,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 05:27:52" (1/3) ... [2022-02-20 17:27:52,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c3c176 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 17:27:52,809 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 17:27:52,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c3c176 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 17:27:52,809 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 17:27:52,810 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound20.c [2022-02-20 17:27:52,814 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 17:27:52,814 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 17:27:52,844 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 17:27:52,849 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 17:27:52,849 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 17:27:52,864 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 17:27:52,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:27:52,867 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:27:52,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:27:52,868 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:27:52,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:27:52,872 INFO L85 PathProgramCache]: Analyzing trace with hash -589224774, now seen corresponding path program 1 times [2022-02-20 17:27:52,878 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:27:52,878 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044215186] [2022-02-20 17:27:52,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:27:52,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:27:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:27:52,982 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 17:27:52,983 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(20)) 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 17:27:52,985 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 17:27:52,985 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 17:27:52,986 INFO L290 TraceCheckUtils]: 4: Hoare triple {26#false} assume false; {26#false} is VALID [2022-02-20 17:27:52,986 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 17:27:52,986 INFO L290 TraceCheckUtils]: 6: Hoare triple {26#false} ~cond := #in~cond; {26#false} is VALID [2022-02-20 17:27:52,987 INFO L290 TraceCheckUtils]: 7: Hoare triple {26#false} assume 0 == ~cond; {26#false} is VALID [2022-02-20 17:27:52,987 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#false} assume !false; {26#false} is VALID [2022-02-20 17:27:52,988 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 17:27:52,988 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 17:27:52,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044215186] [2022-02-20 17:27:52,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044215186] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:27:53,006 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:27:53,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 17:27:53,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657720589] [2022-02-20 17:27:53,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:27:53,013 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 17:27:53,015 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:27:53,018 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 17:27:53,051 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 17:27:53,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 17:27:53,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 17:27:53,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 17:27:53,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 17:27:53,082 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 17:27:53,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:27:53,136 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2022-02-20 17:27:53,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 17:27:53,137 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 17:27:53,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:27:53,138 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 17:27:53,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2022-02-20 17:27:53,148 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 17:27:53,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2022-02-20 17:27:53,156 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 64 transitions. [2022-02-20 17:27:53,248 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 17:27:53,254 INFO L225 Difference]: With dead ends: 41 [2022-02-20 17:27:53,254 INFO L226 Difference]: Without dead ends: 18 [2022-02-20 17:27:53,261 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 17:27:53,264 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 17:27:53,265 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 17:27:53,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-02-20 17:27:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-02-20 17:27:53,291 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:27:53,291 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 17:27:53,292 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 17:27:53,293 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 17:27:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:27:53,299 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-02-20 17:27:53,299 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-02-20 17:27:53,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:27:53,300 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:27:53,300 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 17:27:53,301 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 17:27:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:27:53,308 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-02-20 17:27:53,309 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-02-20 17:27:53,309 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:27:53,310 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:27:53,310 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:27:53,310 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:27:53,310 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 17:27:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-02-20 17:27:53,317 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2022-02-20 17:27:53,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:27:53,318 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-02-20 17:27:53,318 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 17:27:53,319 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-02-20 17:27:53,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:27:53,320 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:27:53,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:27:53,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 17:27:53,321 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:27:53,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:27:53,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1187450884, now seen corresponding path program 1 times [2022-02-20 17:27:53,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:27:53,325 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008769608] [2022-02-20 17:27:53,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:27:53,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:27:53,347 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-20 17:27:53,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103422021] [2022-02-20 17:27:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:27:53,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 17:27:53,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:27:53,351 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 17:27:53,352 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 17:27:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 17:27:53,396 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 17:27:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 17:27:53,416 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 17:27:53,417 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 17:27:53,418 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 17:27:53,439 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 17:27:53,636 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 17:27:53,639 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 17:27:53,641 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 17:27:53,646 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 17:27:53,647 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 17:27:53,650 INFO L158 Benchmark]: Toolchain (without parser) took 1364.52ms. Allocated memory was 104.9MB in the beginning and 136.3MB in the end (delta: 31.5MB). Free memory was 72.2MB in the beginning and 91.1MB in the end (delta: -18.9MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2022-02-20 17:27:53,650 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory was 59.3MB in the beginning and 59.2MB in the end (delta: 92.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 17:27:53,650 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.79ms. Allocated memory is still 104.9MB. Free memory was 72.0MB in the beginning and 78.1MB in the end (delta: -6.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-02-20 17:27:53,651 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.39ms. Allocated memory is still 104.9MB. Free memory was 78.1MB in the beginning and 76.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 17:27:53,651 INFO L158 Benchmark]: Boogie Preprocessor took 22.24ms. Allocated memory is still 104.9MB. Free memory was 76.4MB in the beginning and 75.6MB in the end (delta: 864.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 17:27:53,651 INFO L158 Benchmark]: RCFGBuilder took 244.17ms. Allocated memory is still 104.9MB. Free memory was 75.2MB in the beginning and 65.5MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-20 17:27:53,652 INFO L158 Benchmark]: TraceAbstraction took 846.47ms. Allocated memory was 104.9MB in the beginning and 136.3MB in the end (delta: 31.5MB). Free memory was 65.2MB in the beginning and 91.8MB in the end (delta: -26.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 17:27:53,654 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 0.18ms. Allocated memory is still 104.9MB. Free memory was 59.3MB in the beginning and 59.2MB in the end (delta: 92.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.79ms. Allocated memory is still 104.9MB. Free memory was 72.0MB in the beginning and 78.1MB in the end (delta: -6.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.39ms. Allocated memory is still 104.9MB. Free memory was 78.1MB in the beginning and 76.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.24ms. Allocated memory is still 104.9MB. Free memory was 76.4MB in the beginning and 75.6MB in the end (delta: 864.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 244.17ms. Allocated memory is still 104.9MB. Free memory was 75.2MB in the beginning and 65.5MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 846.47ms. Allocated memory was 104.9MB in the beginning and 136.3MB in the end (delta: 31.5MB). Free memory was 65.2MB in the beginning and 91.8MB in the end (delta: -26.6MB). Peak memory consumption was 4.2MB. 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 17:27:53,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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_valuebound20.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 53908028cfc42f68f62c10378662b57f64149241c563947e258b97b254c402b4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 17:27:55,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 17:27:55,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 17:27:55,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 17:27:55,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 17:27:55,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 17:27:55,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 17:27:55,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 17:27:55,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 17:27:55,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 17:27:55,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 17:27:55,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 17:27:55,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 17:27:55,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 17:27:55,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 17:27:55,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 17:27:55,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 17:27:55,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 17:27:55,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 17:27:55,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 17:27:55,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 17:27:55,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 17:27:55,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 17:27:55,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 17:27:55,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 17:27:55,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 17:27:55,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 17:27:55,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 17:27:55,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 17:27:55,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 17:27:55,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 17:27:55,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 17:27:55,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 17:27:55,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 17:27:55,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 17:27:55,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 17:27:55,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 17:27:55,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 17:27:55,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 17:27:55,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 17:27:55,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 17:27:55,511 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 17:27:55,539 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 17:27:55,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 17:27:55,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 17:27:55,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 17:27:55,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 17:27:55,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 17:27:55,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 17:27:55,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 17:27:55,542 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 17:27:55,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 17:27:55,543 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 17:27:55,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 17:27:55,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 17:27:55,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 17:27:55,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 17:27:55,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 17:27:55,544 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 17:27:55,544 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 17:27:55,544 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 17:27:55,544 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 17:27:55,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 17:27:55,544 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 17:27:55,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 17:27:55,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 17:27:55,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 17:27:55,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 17:27:55,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:27:55,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 17:27:55,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 17:27:55,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 17:27:55,546 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 17:27:55,546 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 17:27:55,546 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 17:27:55,546 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 17:27:55,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 17:27:55,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 17:27:55,547 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53908028cfc42f68f62c10378662b57f64149241c563947e258b97b254c402b4 [2022-02-20 17:27:55,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 17:27:55,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 17:27:55,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 17:27:55,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 17:27:55,873 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 17:27:55,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2022-02-20 17:27:55,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7eec906d/8de37cb8259c4f44a9dbe5d9cbd3bd1a/FLAG4c17809db [2022-02-20 17:27:56,269 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 17:27:56,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2022-02-20 17:27:56,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7eec906d/8de37cb8259c4f44a9dbe5d9cbd3bd1a/FLAG4c17809db [2022-02-20 17:27:56,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7eec906d/8de37cb8259c4f44a9dbe5d9cbd3bd1a [2022-02-20 17:27:56,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 17:27:56,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 17:27:56,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 17:27:56,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 17:27:56,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 17:27:56,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:27:56" (1/1) ... [2022-02-20 17:27:56,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a2b9e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:56, skipping insertion in model container [2022-02-20 17:27:56,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:27:56" (1/1) ... [2022-02-20 17:27:56,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 17:27:56,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 17:27:56,789 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_valuebound20.c[709,722] [2022-02-20 17:27:56,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:27:56,813 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 17:27:56,855 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_valuebound20.c[709,722] [2022-02-20 17:27:56,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:27:56,895 INFO L208 MainTranslator]: Completed translation [2022-02-20 17:27:56,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:56 WrapperNode [2022-02-20 17:27:56,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 17:27:56,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 17:27:56,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 17:27:56,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 17:27:56,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:56" (1/1) ... [2022-02-20 17:27:56,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:56" (1/1) ... [2022-02-20 17:27:56,940 INFO L137 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2022-02-20 17:27:56,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 17:27:56,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 17:27:56,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 17:27:56,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 17:27:56,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:56" (1/1) ... [2022-02-20 17:27:56,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:56" (1/1) ... [2022-02-20 17:27:56,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:56" (1/1) ... [2022-02-20 17:27:56,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:56" (1/1) ... [2022-02-20 17:27:56,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:56" (1/1) ... [2022-02-20 17:27:56,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:56" (1/1) ... [2022-02-20 17:27:56,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:56" (1/1) ... [2022-02-20 17:27:56,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 17:27:56,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 17:27:56,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 17:27:56,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 17:27:56,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:56" (1/1) ... [2022-02-20 17:27:56,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:27:56,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:27:57,021 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 17:27:57,039 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 17:27:57,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 17:27:57,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 17:27:57,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 17:27:57,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 17:27:57,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-20 17:27:57,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-20 17:27:57,099 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 17:27:57,100 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 17:27:59,153 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 17:27:59,164 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 17:27:59,165 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 17:27:59,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:27:59 BoogieIcfgContainer [2022-02-20 17:27:59,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 17:27:59,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 17:27:59,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 17:27:59,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 17:27:59,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 05:27:56" (1/3) ... [2022-02-20 17:27:59,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c42a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:27:59, skipping insertion in model container [2022-02-20 17:27:59,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:27:56" (2/3) ... [2022-02-20 17:27:59,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c42a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:27:59, skipping insertion in model container [2022-02-20 17:27:59,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:27:59" (3/3) ... [2022-02-20 17:27:59,183 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound20.c [2022-02-20 17:27:59,187 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 17:27:59,188 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 17:27:59,231 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 17:27:59,242 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 17:27:59,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 17:27:59,256 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 17:27:59,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:27:59,259 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:27:59,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:27:59,260 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:27:59,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:27:59,267 INFO L85 PathProgramCache]: Analyzing trace with hash -589224774, now seen corresponding path program 1 times [2022-02-20 17:27:59,275 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 17:27:59,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931792460] [2022-02-20 17:27:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:27:59,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 17:27:59,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 17:27:59,281 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 17:27:59,282 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 17:27:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:27:59,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2022-02-20 17:27:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:27:59,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 17:27:59,485 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 17:27:59,485 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, 20bv32)) 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 17:27:59,486 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 17:27:59,486 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 17:27:59,487 INFO L290 TraceCheckUtils]: 4: Hoare triple {26#false} assume false; {26#false} is VALID [2022-02-20 17:27:59,487 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 17:27:59,488 INFO L290 TraceCheckUtils]: 6: Hoare triple {26#false} ~cond := #in~cond; {26#false} is VALID [2022-02-20 17:27:59,488 INFO L290 TraceCheckUtils]: 7: Hoare triple {26#false} assume 0bv32 == ~cond; {26#false} is VALID [2022-02-20 17:27:59,489 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#false} assume !false; {26#false} is VALID [2022-02-20 17:27:59,489 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 17:27:59,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 17:27:59,491 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 17:27:59,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931792460] [2022-02-20 17:27:59,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931792460] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:27:59,492 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:27:59,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 17:27:59,494 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439862105] [2022-02-20 17:27:59,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:27:59,499 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 17:27:59,500 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:27:59,502 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 17:27:59,573 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 17:27:59,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 17:27:59,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 17:27:59,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 17:27:59,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 17:27:59,593 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 17:28:19,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:19,330 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2022-02-20 17:28:19,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 17:28:19,331 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 17:28:19,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:28:19,332 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 17:28:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2022-02-20 17:28:19,338 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 17:28:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2022-02-20 17:28:19,342 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 64 transitions. [2022-02-20 17:28:25,678 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 17:28:25,684 INFO L225 Difference]: With dead ends: 41 [2022-02-20 17:28:25,684 INFO L226 Difference]: Without dead ends: 18 [2022-02-20 17:28:25,691 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 17:28:25,693 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 17:28:25,694 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 17:28:25,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-02-20 17:28:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-02-20 17:28:25,723 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:28:25,725 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 17:28:25,725 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 17:28:25,726 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 17:28:25,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:25,729 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-02-20 17:28:25,729 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-02-20 17:28:25,729 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:28:25,730 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:28:25,731 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 17:28:25,732 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 17:28:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:28:25,734 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-02-20 17:28:25,734 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-02-20 17:28:25,735 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:28:25,735 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:28:25,735 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:28:25,735 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:28:25,735 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 17:28:25,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-02-20 17:28:25,738 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2022-02-20 17:28:25,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:28:25,738 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-02-20 17:28:25,738 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 17:28:25,739 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-02-20 17:28:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:28:25,739 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:28:25,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:28:25,751 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 17:28:25,940 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 17:28:25,941 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:28:25,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:28:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1187450884, now seen corresponding path program 1 times [2022-02-20 17:28:25,942 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 17:28:25,942 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235836315] [2022-02-20 17:28:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:28:25,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 17:28:25,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 17:28:25,944 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 17:28:25,945 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 17:28:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:28:26,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-20 17:28:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:28:26,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 17:28:26,675 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 17:28:26,675 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, 20bv32)) 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 17:28:26,676 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 17:28:26,676 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 17:28:26,677 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 17:28:26,678 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 17:28:26,678 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 17:28:26,679 INFO L290 TraceCheckUtils]: 7: Hoare triple {200#(= __VERIFIER_assert_~cond (_ bv1 32))} assume 0bv32 == ~cond; {175#false} is VALID [2022-02-20 17:28:26,679 INFO L290 TraceCheckUtils]: 8: Hoare triple {175#false} assume !false; {175#false} is VALID [2022-02-20 17:28:26,679 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 17:28:26,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 17:28:26,679 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 17:28:26,679 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235836315] [2022-02-20 17:28:26,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235836315] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:28:26,680 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:28:26,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-20 17:28:26,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16673464] [2022-02-20 17:28:26,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:28:26,681 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 17:28:26,681 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:28:26,681 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 17:28:26,921 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 17:28:26,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-20 17:28:26,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 17:28:26,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-20 17:28:26,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-20 17:28:26,922 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 17:28:29,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 17:28:34,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 17:28:38,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 17:28:40,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 17:28:51,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-20 17:29:08,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []