./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.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 6437fdc3c0b95eb5fb3a7e28606efb50e2431074b1de5f5cf4c718827adac36d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:59:32,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:59:32,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:59:32,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:59:32,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:59:32,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:59:32,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:59:32,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:59:32,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:59:32,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:59:32,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:59:32,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:59:32,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:59:32,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:59:32,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:59:32,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:59:32,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:59:32,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:59:32,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:59:32,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:59:32,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:59:32,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:59:32,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:59:32,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:59:32,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:59:32,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:59:32,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:59:32,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:59:32,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:59:32,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:59:32,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:59:32,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:59:32,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:59:32,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:59:32,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:59:32,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:59:32,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:59:32,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:59:32,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:59:32,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:59:32,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:59:32,748 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 10:59:32,771 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:59:32,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:59:32,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:59:32,772 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:59:32,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:59:32,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:59:32,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:59:32,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:59:32,773 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:59:32,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:59:32,774 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:59:32,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 10:59:32,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:59:32,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:59:32,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:59:32,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:59:32,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:59:32,775 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:59:32,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:59:32,775 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:59:32,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:59:32,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:59:32,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:59:32,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:59:32,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:59:32,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:59:32,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:59:32,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:59:32,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 10:59:32,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 10:59:32,778 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:59:32,778 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:59:32,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:59:32,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:59:32,778 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6437fdc3c0b95eb5fb3a7e28606efb50e2431074b1de5f5cf4c718827adac36d [2021-12-22 10:59:32,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:59:32,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:59:32,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:59:32,998 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:59:32,999 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:59:32,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c [2021-12-22 10:59:33,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71098e207/1afff20841af4ee38dedbe479701806c/FLAG42f9d3995 [2021-12-22 10:59:33,411 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:59:33,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c [2021-12-22 10:59:33,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71098e207/1afff20841af4ee38dedbe479701806c/FLAG42f9d3995 [2021-12-22 10:59:33,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71098e207/1afff20841af4ee38dedbe479701806c [2021-12-22 10:59:33,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:59:33,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:59:33,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:59:33,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:59:33,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:59:33,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:59:33" (1/1) ... [2021-12-22 10:59:33,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38fe30d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:33, skipping insertion in model container [2021-12-22 10:59:33,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:59:33" (1/1) ... [2021-12-22 10:59:33,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:59:33,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:59:33,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c[712,725] [2021-12-22 10:59:33,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:59:33,591 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:59:33,601 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c[712,725] [2021-12-22 10:59:33,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:59:33,616 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:59:33,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:33 WrapperNode [2021-12-22 10:59:33,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:59:33,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:59:33,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:59:33,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:59:33,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:33" (1/1) ... [2021-12-22 10:59:33,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:33" (1/1) ... [2021-12-22 10:59:33,642 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2021-12-22 10:59:33,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:59:33,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:59:33,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:59:33,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:59:33,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:33" (1/1) ... [2021-12-22 10:59:33,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:33" (1/1) ... [2021-12-22 10:59:33,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:33" (1/1) ... [2021-12-22 10:59:33,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:33" (1/1) ... [2021-12-22 10:59:33,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:33" (1/1) ... [2021-12-22 10:59:33,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:33" (1/1) ... [2021-12-22 10:59:33,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:33" (1/1) ... [2021-12-22 10:59:33,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:59:33,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:59:33,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:59:33,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:59:33,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:33" (1/1) ... [2021-12-22 10:59:33,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:59:33,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:59:33,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 10:59:33,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 10:59:33,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:59:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 10:59:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:59:33,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:59:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 10:59:33,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 10:59:33,757 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:59:33,759 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:59:33,834 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:59:33,838 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:59:33,838 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 10:59:33,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:59:33 BoogieIcfgContainer [2021-12-22 10:59:33,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:59:33,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:59:33,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:59:33,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:59:33,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:59:33" (1/3) ... [2021-12-22 10:59:33,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b78df8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:59:33, skipping insertion in model container [2021-12-22 10:59:33,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:33" (2/3) ... [2021-12-22 10:59:33,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b78df8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:59:33, skipping insertion in model container [2021-12-22 10:59:33,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:59:33" (3/3) ... [2021-12-22 10:59:33,846 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound5.c [2021-12-22 10:59:33,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:59:33,849 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:59:33,879 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:59:33,884 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 10:59:33,884 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:59:33,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 10:59:33,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 10:59:33,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:59:33,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:59:33,898 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:59:33,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:59:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2021-12-22 10:59:33,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:59:33,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111125189] [2021-12-22 10:59:33,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:59:33,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:59:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:59:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:59:33,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 10:59:33,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111125189] [2021-12-22 10:59:33,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111125189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:59:33,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:59:33,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 10:59:33,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885114357] [2021-12-22 10:59:33,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:59:33,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 10:59:33,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 10:59:34,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 10:59:34,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:59:34,014 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:59:34,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:59:34,027 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-12-22 10:59:34,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 10:59:34,029 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-22 10:59:34,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:59:34,036 INFO L225 Difference]: With dead ends: 33 [2021-12-22 10:59:34,036 INFO L226 Difference]: Without dead ends: 14 [2021-12-22 10:59:34,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:59:34,041 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 10:59:34,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 10:59:34,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-22 10:59:34,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-22 10:59:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 10:59:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-22 10:59:34,061 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2021-12-22 10:59:34,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:59:34,062 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-22 10:59:34,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:59:34,062 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-22 10:59:34,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 10:59:34,063 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:59:34,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:59:34,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 10:59:34,063 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:59:34,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:59:34,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2021-12-22 10:59:34,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:59:34,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74384695] [2021-12-22 10:59:34,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:59:34,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:59:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:59:34,081 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 10:59:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:59:34,097 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 10:59:34,097 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 10:59:34,098 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 10:59:34,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 10:59:34,101 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-22 10:59:34,103 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 10:59:34,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:59:34 BoogieIcfgContainer [2021-12-22 10:59:34,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 10:59:34,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 10:59:34,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 10:59:34,115 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 10:59:34,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:59:33" (3/4) ... [2021-12-22 10:59:34,117 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 10:59:34,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 10:59:34,118 INFO L158 Benchmark]: Toolchain (without parser) took 690.85ms. Allocated memory is still 140.5MB. Free memory was 111.8MB in the beginning and 80.3MB in the end (delta: 31.5MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2021-12-22 10:59:34,118 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 88.1MB. Free memory was 46.0MB in the beginning and 46.0MB in the end (delta: 43.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:59:34,119 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.15ms. Allocated memory is still 140.5MB. Free memory was 111.4MB in the beginning and 115.5MB in the end (delta: -4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 10:59:34,119 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.60ms. Allocated memory is still 140.5MB. Free memory was 115.5MB in the beginning and 114.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 10:59:34,120 INFO L158 Benchmark]: Boogie Preprocessor took 28.19ms. Allocated memory is still 140.5MB. Free memory was 114.2MB in the beginning and 113.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 10:59:34,120 INFO L158 Benchmark]: RCFGBuilder took 167.44ms. Allocated memory is still 140.5MB. Free memory was 113.0MB in the beginning and 104.2MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 10:59:34,120 INFO L158 Benchmark]: TraceAbstraction took 274.14ms. Allocated memory is still 140.5MB. Free memory was 103.4MB in the beginning and 80.7MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-22 10:59:34,121 INFO L158 Benchmark]: Witness Printer took 2.57ms. Allocated memory is still 140.5MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:59:34,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 88.1MB. Free memory was 46.0MB in the beginning and 46.0MB in the end (delta: 43.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 187.15ms. Allocated memory is still 140.5MB. Free memory was 111.4MB in the beginning and 115.5MB in the end (delta: -4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.60ms. Allocated memory is still 140.5MB. Free memory was 115.5MB in the beginning and 114.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.19ms. Allocated memory is still 140.5MB. Free memory was 114.2MB in the beginning and 113.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 167.44ms. Allocated memory is still 140.5MB. Free memory was 113.0MB in the beginning and 104.2MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 274.14ms. Allocated memory is still 140.5MB. Free memory was 103.4MB in the beginning and 80.7MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 2.57ms. Allocated memory is still 140.5MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=5) [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=5) [L29] x = a / 2.0 [L30] r = 0 VAL [r=0] [L32] COND TRUE 1 VAL [r=0] [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 19 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-22 10:59:34,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.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 6437fdc3c0b95eb5fb3a7e28606efb50e2431074b1de5f5cf4c718827adac36d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:59:36,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:59:36,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:59:36,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:59:36,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:59:36,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:59:36,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:59:36,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:59:36,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:59:36,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:59:36,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:59:36,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:59:36,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:59:36,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:59:36,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:59:36,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:59:36,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:59:36,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:59:36,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:59:36,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:59:36,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:59:36,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:59:36,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:59:36,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:59:36,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:59:36,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:59:36,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:59:36,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:59:36,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:59:36,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:59:36,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:59:36,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:59:36,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:59:36,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:59:36,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:59:36,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:59:36,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:59:36,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:59:36,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:59:36,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:59:36,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:59:36,096 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 10:59:36,122 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:59:36,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:59:36,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:59:36,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:59:36,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:59:36,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:59:36,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:59:36,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:59:36,126 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:59:36,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:59:36,127 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:59:36,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:59:36,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:59:36,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:59:36,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:59:36,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:59:36,128 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 10:59:36,128 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 10:59:36,128 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 10:59:36,128 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:59:36,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:59:36,128 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:59:36,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:59:36,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:59:36,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:59:36,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:59:36,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:59:36,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:59:36,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:59:36,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:59:36,130 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 10:59:36,130 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 10:59:36,130 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:59:36,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:59:36,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:59:36,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:59:36,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 10:59:36,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6437fdc3c0b95eb5fb3a7e28606efb50e2431074b1de5f5cf4c718827adac36d [2021-12-22 10:59:36,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:59:36,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:59:36,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:59:36,397 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:59:36,398 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:59:36,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c [2021-12-22 10:59:36,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b705c77/8b7072aea8fa4109817d7ca5fdb46cab/FLAG470c90bc0 [2021-12-22 10:59:36,796 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:59:36,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c [2021-12-22 10:59:36,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b705c77/8b7072aea8fa4109817d7ca5fdb46cab/FLAG470c90bc0 [2021-12-22 10:59:36,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b705c77/8b7072aea8fa4109817d7ca5fdb46cab [2021-12-22 10:59:36,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:59:36,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:59:36,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:59:36,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:59:36,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:59:36,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:59:36" (1/1) ... [2021-12-22 10:59:36,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a5c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:36, skipping insertion in model container [2021-12-22 10:59:36,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:59:36" (1/1) ... [2021-12-22 10:59:36,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:59:36,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:59:36,925 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c[712,725] [2021-12-22 10:59:36,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:59:36,947 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:59:36,983 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c[712,725] [2021-12-22 10:59:36,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:59:36,995 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:59:36,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:36 WrapperNode [2021-12-22 10:59:36,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:59:36,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:59:36,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:59:36,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:59:37,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:36" (1/1) ... [2021-12-22 10:59:37,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:36" (1/1) ... [2021-12-22 10:59:37,018 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2021-12-22 10:59:37,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:59:37,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:59:37,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:59:37,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:59:37,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:36" (1/1) ... [2021-12-22 10:59:37,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:36" (1/1) ... [2021-12-22 10:59:37,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:36" (1/1) ... [2021-12-22 10:59:37,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:36" (1/1) ... [2021-12-22 10:59:37,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:36" (1/1) ... [2021-12-22 10:59:37,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:36" (1/1) ... [2021-12-22 10:59:37,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:36" (1/1) ... [2021-12-22 10:59:37,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:59:37,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:59:37,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:59:37,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:59:37,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:36" (1/1) ... [2021-12-22 10:59:37,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:59:37,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:59:37,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 10:59:37,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 10:59:37,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:59:37,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 10:59:37,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:59:37,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:59:37,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 10:59:37,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 10:59:37,171 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:59:37,173 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:59:37,629 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:59:37,633 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:59:37,633 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 10:59:37,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:59:37 BoogieIcfgContainer [2021-12-22 10:59:37,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:59:37,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:59:37,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:59:37,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:59:37,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:59:36" (1/3) ... [2021-12-22 10:59:37,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce7e9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:59:37, skipping insertion in model container [2021-12-22 10:59:37,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:59:36" (2/3) ... [2021-12-22 10:59:37,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce7e9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:59:37, skipping insertion in model container [2021-12-22 10:59:37,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:59:37" (3/3) ... [2021-12-22 10:59:37,640 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound5.c [2021-12-22 10:59:37,643 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:59:37,643 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:59:37,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:59:37,704 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 10:59:37,704 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:59:37,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 10:59:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 10:59:37,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:59:37,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:59:37,725 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:59:37,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:59:37,734 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2021-12-22 10:59:37,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:59:37,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042788028] [2021-12-22 10:59:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:59:37,742 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:59:37,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:59:37,744 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:59:37,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 10:59:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:59:38,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 10:59:38,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:59:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:59:38,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:59:38,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:59:38,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042788028] [2021-12-22 10:59:38,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042788028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:59:38,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:59:38,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 10:59:38,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591476902] [2021-12-22 10:59:38,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:59:38,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 10:59:38,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:59:38,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 10:59:38,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:59:38,094 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:59:38,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:59:38,105 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-12-22 10:59:38,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 10:59:38,107 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-22 10:59:38,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:59:38,116 INFO L225 Difference]: With dead ends: 33 [2021-12-22 10:59:38,117 INFO L226 Difference]: Without dead ends: 14 [2021-12-22 10:59:38,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:59:38,123 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 10:59:38,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 10:59:38,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-22 10:59:38,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-22 10:59:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 10:59:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-22 10:59:38,144 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2021-12-22 10:59:38,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:59:38,144 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-22 10:59:38,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:59:38,144 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-22 10:59:38,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 10:59:38,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:59:38,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:59:38,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-22 10:59:38,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:59:38,361 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:59:38,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:59:38,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2021-12-22 10:59:38,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:59:38,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172330290] [2021-12-22 10:59:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:59:38,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:59:38,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:59:38,365 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:59:38,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-22 10:59:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:59:39,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 10:59:39,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:00:37,553 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32))) (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (or (and (not .cse0) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and .cse0 (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse1)))) is different from true