./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/float-benchs/zonotope_loose.c.v+cfa-reducer.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 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:51:16,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:51:16,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:51:16,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:51:16,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:51:16,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:51:16,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:51:16,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:51:16,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:51:16,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:51:16,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:51:16,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:51:16,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:51:16,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:51:16,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:51:16,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:51:16,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:51:16,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:51:16,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:51:16,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:51:16,598 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:51:16,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:51:16,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:51:16,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:51:16,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:51:16,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:51:16,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:51:16,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:51:16,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:51:16,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:51:16,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:51:16,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:51:16,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:51:16,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:51:16,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:51:16,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:51:16,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:51:16,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:51:16,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:51:16,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:51:16,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:51:16,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:51:16,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:51:16,666 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:51:16,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:51:16,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:51:16,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:51:16,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:51:16,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:51:16,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:51:16,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:51:16,670 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:51:16,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:51:16,671 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:51:16,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:51:16,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:51:16,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:51:16,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:51:16,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:51:16,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:51:16,673 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:51:16,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:51:16,673 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:51:16,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:51:16,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:51:16,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:51:16,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:51:16,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:51:16,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:51:16,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:51:16,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:51:16,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:51:16,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:51:16,677 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:51:16,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:51:16,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:51:16,678 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 [2022-07-19 13:51:16,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:51:16,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:51:16,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:51:16,945 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:51:16,948 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:51:16,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2022-07-19 13:51:17,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9797522/2f969db6ca6d4dc781bc13cca2fef832/FLAGfa3386de2 [2022-07-19 13:51:17,466 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:51:17,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2022-07-19 13:51:17,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9797522/2f969db6ca6d4dc781bc13cca2fef832/FLAGfa3386de2 [2022-07-19 13:51:17,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9797522/2f969db6ca6d4dc781bc13cca2fef832 [2022-07-19 13:51:17,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:51:17,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:51:17,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:51:17,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:51:17,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:51:17,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:51:17" (1/1) ... [2022-07-19 13:51:17,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425d5189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:17, skipping insertion in model container [2022-07-19 13:51:17,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:51:17" (1/1) ... [2022-07-19 13:51:17,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:51:17,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:51:18,029 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/float-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2022-07-19 13:51:18,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:51:18,041 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:51:18,052 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/float-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2022-07-19 13:51:18,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:51:18,063 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:51:18,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:18 WrapperNode [2022-07-19 13:51:18,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:51:18,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:51:18,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:51:18,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:51:18,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:18" (1/1) ... [2022-07-19 13:51:18,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:18" (1/1) ... [2022-07-19 13:51:18,099 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2022-07-19 13:51:18,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:51:18,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:51:18,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:51:18,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:51:18,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:18" (1/1) ... [2022-07-19 13:51:18,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:18" (1/1) ... [2022-07-19 13:51:18,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:18" (1/1) ... [2022-07-19 13:51:18,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:18" (1/1) ... [2022-07-19 13:51:18,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:18" (1/1) ... [2022-07-19 13:51:18,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:18" (1/1) ... [2022-07-19 13:51:18,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:18" (1/1) ... [2022-07-19 13:51:18,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:51:18,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:51:18,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:51:18,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:51:18,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:18" (1/1) ... [2022-07-19 13:51:18,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:51:18,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:51:18,147 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) [2022-07-19 13:51:18,157 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 [2022-07-19 13:51:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:51:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:51:18,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:51:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:51:18,227 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:51:18,228 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:51:18,317 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:51:18,323 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:51:18,323 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:51:18,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:51:18 BoogieIcfgContainer [2022-07-19 13:51:18,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:51:18,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:51:18,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:51:18,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:51:18,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:51:17" (1/3) ... [2022-07-19 13:51:18,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32713f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:51:18, skipping insertion in model container [2022-07-19 13:51:18,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:18" (2/3) ... [2022-07-19 13:51:18,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32713f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:51:18, skipping insertion in model container [2022-07-19 13:51:18,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:51:18" (3/3) ... [2022-07-19 13:51:18,356 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c.v+cfa-reducer.c [2022-07-19 13:51:18,368 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:51:18,369 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:51:18,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:51:18,471 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@57de3f20, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@20e285fa [2022-07-19 13:51:18,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:51:18,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:51:18,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-19 13:51:18,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:51:18,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:51:18,495 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:51:18,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:51:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash 570602568, now seen corresponding path program 1 times [2022-07-19 13:51:18,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:51:18,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628110138] [2022-07-19 13:51:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:51:18,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:51:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:51:18,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:51:18,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:51:18,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628110138] [2022-07-19 13:51:18,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628110138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:51:18,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:51:18,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 13:51:18,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595246799] [2022-07-19 13:51:18,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:51:18,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 13:51:18,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:51:18,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 13:51:18,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 13:51:18,739 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:51:18,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:51:18,806 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-07-19 13:51:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 13:51:18,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-19 13:51:18,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:51:18,818 INFO L225 Difference]: With dead ends: 30 [2022-07-19 13:51:18,820 INFO L226 Difference]: Without dead ends: 14 [2022-07-19 13:51:18,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 13:51:18,828 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:51:18,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 59 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:51:18,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-19 13:51:18,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-19 13:51:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:51:18,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-07-19 13:51:18,856 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2022-07-19 13:51:18,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:51:18,856 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-07-19 13:51:18,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:51:18,857 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-07-19 13:51:18,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-19 13:51:18,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:51:18,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:51:18,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:51:18,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:51:18,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:51:18,859 INFO L85 PathProgramCache]: Analyzing trace with hash 587613229, now seen corresponding path program 1 times [2022-07-19 13:51:18,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:51:18,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217693183] [2022-07-19 13:51:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:51:18,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:51:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:51:18,874 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:51:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:51:18,899 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:51:18,899 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:51:18,901 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:51:18,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 13:51:18,907 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 13:51:18,910 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:51:18,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:51:18 BoogieIcfgContainer [2022-07-19 13:51:18,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:51:18,940 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:51:18,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:51:18,941 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:51:18,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:51:18" (3/4) ... [2022-07-19 13:51:18,944 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:51:18,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:51:18,947 INFO L158 Benchmark]: Toolchain (without parser) took 1075.20ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 53.8MB in the beginning and 67.4MB in the end (delta: -13.6MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2022-07-19 13:51:18,947 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory was 40.6MB in the beginning and 40.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:51:18,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.16ms. Allocated memory is still 86.0MB. Free memory was 53.6MB in the beginning and 62.3MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:51:18,954 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.06ms. Allocated memory is still 86.0MB. Free memory was 62.3MB in the beginning and 60.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:51:18,955 INFO L158 Benchmark]: Boogie Preprocessor took 15.22ms. Allocated memory is still 86.0MB. Free memory was 60.6MB in the beginning and 59.8MB in the end (delta: 876.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:51:18,956 INFO L158 Benchmark]: RCFGBuilder took 209.20ms. Allocated memory is still 86.0MB. Free memory was 59.8MB in the beginning and 51.1MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 13:51:18,956 INFO L158 Benchmark]: TraceAbstraction took 597.42ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 50.5MB in the beginning and 68.0MB in the end (delta: -17.5MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2022-07-19 13:51:18,956 INFO L158 Benchmark]: Witness Printer took 4.91ms. Allocated memory is still 104.9MB. Free memory was 68.0MB in the beginning and 67.4MB in the end (delta: 595.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:51:18,963 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory was 40.6MB in the beginning and 40.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.16ms. Allocated memory is still 86.0MB. Free memory was 53.6MB in the beginning and 62.3MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.06ms. Allocated memory is still 86.0MB. Free memory was 62.3MB in the beginning and 60.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.22ms. Allocated memory is still 86.0MB. Free memory was 60.6MB in the beginning and 59.8MB in the end (delta: 876.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 209.20ms. Allocated memory is still 86.0MB. Free memory was 59.8MB in the beginning and 51.1MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 597.42ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 50.5MB in the beginning and 68.0MB in the end (delta: -17.5MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * Witness Printer took 4.91ms. Allocated memory is still 104.9MB. Free memory was 68.0MB in the beginning and 67.4MB in the end (delta: 595.1kB). Peak memory consumption was 2.1MB. 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: 45]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L1] int __return_main; [L12] int __return_76; VAL [__return_76=0, __return_main=0] [L15] double main__x; [L16] double main__y; [L17] main__x = __VERIFIER_nondet_double() [L18] int main____CPAchecker_TMP_0; VAL [__return_76=0, __return_main=0] [L19] COND TRUE main__x >= 0.0 VAL [__return_76=0, __return_main=0] [L21] COND TRUE main__x <= 10.0 [L23] main____CPAchecker_TMP_0 = 1 VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L24] COND TRUE main____CPAchecker_TMP_0 != 0 [L26] main__y = (main__x * main__x) - main__x VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L27] COND FALSE !(main__y >= 0) [L69] main__y = (main__x * main__x) + 2.0 VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L31] int main____CPAchecker_TMP_1; VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L32] COND FALSE !(main__y >= 0.0) VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L58] main____CPAchecker_TMP_1 = 0 VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] [L39] int __tmp_1; [L40] __tmp_1 = main____CPAchecker_TMP_1 [L41] int __VERIFIER_assert__cond; [L42] __VERIFIER_assert__cond = __tmp_1 VAL [__return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] [L43] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] [L45] reach_error() VAL [__return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 59 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 20 mSDtfsCounter, 13 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 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 [2022-07-19 13:51:19,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.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 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:51:20,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:51:20,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:51:21,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:51:21,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:51:21,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:51:21,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:51:21,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:51:21,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:51:21,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:51:21,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:51:21,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:51:21,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:51:21,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:51:21,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:51:21,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:51:21,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:51:21,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:51:21,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:51:21,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:51:21,053 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:51:21,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:51:21,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:51:21,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:51:21,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:51:21,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:51:21,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:51:21,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:51:21,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:51:21,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:51:21,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:51:21,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:51:21,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:51:21,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:51:21,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:51:21,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:51:21,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:51:21,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:51:21,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:51:21,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:51:21,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:51:21,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:51:21,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:51:21,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:51:21,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:51:21,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:51:21,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:51:21,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:51:21,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:51:21,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:51:21,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:51:21,119 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:51:21,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:51:21,120 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:51:21,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:51:21,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:51:21,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:51:21,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:51:21,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:51:21,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:51:21,122 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:51:21,122 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:51:21,122 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:51:21,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:51:21,122 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:51:21,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:51:21,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:51:21,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:51:21,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:51:21,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:51:21,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:51:21,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:51:21,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:51:21,124 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:51:21,125 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:51:21,125 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:51:21,125 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:51:21,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:51:21,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:51:21,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 [2022-07-19 13:51:21,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:51:21,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:51:21,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:51:21,475 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:51:21,476 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:51:21,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2022-07-19 13:51:21,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64e8028a4/354ea86c8aa549e69f101f6e2d87ec2e/FLAG0692a7391 [2022-07-19 13:51:22,004 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:51:22,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2022-07-19 13:51:22,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64e8028a4/354ea86c8aa549e69f101f6e2d87ec2e/FLAG0692a7391 [2022-07-19 13:51:22,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64e8028a4/354ea86c8aa549e69f101f6e2d87ec2e [2022-07-19 13:51:22,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:51:22,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:51:22,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:51:22,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:51:22,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:51:22,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:51:22" (1/1) ... [2022-07-19 13:51:22,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae09126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:22, skipping insertion in model container [2022-07-19 13:51:22,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:51:22" (1/1) ... [2022-07-19 13:51:22,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:51:22,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:51:22,576 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/float-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2022-07-19 13:51:22,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:51:22,598 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:51:22,625 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/float-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2022-07-19 13:51:22,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:51:22,661 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:51:22,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:22 WrapperNode [2022-07-19 13:51:22,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:51:22,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:51:22,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:51:22,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:51:22,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:22" (1/1) ... [2022-07-19 13:51:22,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:22" (1/1) ... [2022-07-19 13:51:22,698 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-07-19 13:51:22,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:51:22,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:51:22,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:51:22,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:51:22,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:22" (1/1) ... [2022-07-19 13:51:22,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:22" (1/1) ... [2022-07-19 13:51:22,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:22" (1/1) ... [2022-07-19 13:51:22,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:22" (1/1) ... [2022-07-19 13:51:22,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:22" (1/1) ... [2022-07-19 13:51:22,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:22" (1/1) ... [2022-07-19 13:51:22,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:22" (1/1) ... [2022-07-19 13:51:22,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:51:22,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:51:22,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:51:22,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:51:22,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:22" (1/1) ... [2022-07-19 13:51:22,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:51:22,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:51:22,789 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) [2022-07-19 13:51:22,820 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 [2022-07-19 13:51:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:51:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:51:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:51:22,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:51:22,905 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:51:22,906 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:51:24,282 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:51:24,287 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:51:24,287 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:51:24,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:51:24 BoogieIcfgContainer [2022-07-19 13:51:24,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:51:24,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:51:24,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:51:24,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:51:24,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:51:22" (1/3) ... [2022-07-19 13:51:24,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7c028b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:51:24, skipping insertion in model container [2022-07-19 13:51:24,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:51:22" (2/3) ... [2022-07-19 13:51:24,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7c028b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:51:24, skipping insertion in model container [2022-07-19 13:51:24,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:51:24" (3/3) ... [2022-07-19 13:51:24,296 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c.v+cfa-reducer.c [2022-07-19 13:51:24,309 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:51:24,310 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:51:24,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:51:24,402 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1dab8d1c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31f6988f [2022-07-19 13:51:24,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:51:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:51:24,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-19 13:51:24,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:51:24,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:51:24,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:51:24,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:51:24,423 INFO L85 PathProgramCache]: Analyzing trace with hash 570602568, now seen corresponding path program 1 times [2022-07-19 13:51:24,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:51:24,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200321204] [2022-07-19 13:51:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:51:24,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:51:24,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:51:24,439 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) [2022-07-19 13:51:24,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 13:51:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:51:24,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 13:51:24,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:51:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:51:24,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:51:24,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:51:24,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200321204] [2022-07-19 13:51:24,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200321204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:51:24,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:51:24,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 13:51:24,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345002171] [2022-07-19 13:51:24,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:51:24,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 13:51:24,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:51:25,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 13:51:25,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 13:51:25,012 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:51:25,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:51:25,109 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-07-19 13:51:25,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 13:51:25,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-19 13:51:25,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:51:25,118 INFO L225 Difference]: With dead ends: 27 [2022-07-19 13:51:25,118 INFO L226 Difference]: Without dead ends: 14 [2022-07-19 13:51:25,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 13:51:25,124 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:51:25,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:51:25,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-19 13:51:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-19 13:51:25,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:51:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-07-19 13:51:25,158 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2022-07-19 13:51:25,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:51:25,159 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-07-19 13:51:25,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:51:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-07-19 13:51:25,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-19 13:51:25,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:51:25,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:51:25,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 13:51:25,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:51:25,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:51:25,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:51:25,378 INFO L85 PathProgramCache]: Analyzing trace with hash 587613229, now seen corresponding path program 1 times [2022-07-19 13:51:25,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:51:25,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498434331] [2022-07-19 13:51:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:51:25,379 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:51:25,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:51:25,381 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) [2022-07-19 13:51:25,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 13:51:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:51:25,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 13:51:25,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:51:38,553 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)))) is different from false [2022-07-19 13:51:40,571 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)))) is different from true [2022-07-19 13:52:07,030 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)))) is different from false [2022-07-19 13:52:09,059 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)))) is different from true [2022-07-19 13:52:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:52:50,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:52:50,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:52:50,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498434331] [2022-07-19 13:52:50,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498434331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:52:50,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:52:50,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 13:52:50,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661347697] [2022-07-19 13:52:50,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:52:50,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 13:52:50,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:52:50,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 13:52:50,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=10, Unknown=4, NotChecked=14, Total=42 [2022-07-19 13:52:50,881 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:52:53,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 13:53:02,624 WARN L233 SmtUtils]: Spent 7.77s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 13:53:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:53:03,149 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-07-19 13:53:03,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 13:53:03,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-19 13:53:03,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:53:03,151 INFO L225 Difference]: With dead ends: 21 [2022-07-19 13:53:03,151 INFO L226 Difference]: Without dead ends: 16 [2022-07-19 13:53:03,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=19, Invalid=15, Unknown=4, NotChecked=18, Total=56 [2022-07-19 13:53:03,153 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 13:53:03,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 7 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 25 Unchecked, 2.9s Time] [2022-07-19 13:53:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-19 13:53:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-07-19 13:53:03,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:53:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-07-19 13:53:03,158 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2022-07-19 13:53:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:53:03,158 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-07-19 13:53:03,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:53:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-07-19 13:53:03,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-19 13:53:03,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:53:03,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:53:03,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-19 13:53:03,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:53:03,379 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:53:03,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:53:03,379 INFO L85 PathProgramCache]: Analyzing trace with hash -125142316, now seen corresponding path program 1 times [2022-07-19 13:53:03,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:53:03,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545957303] [2022-07-19 13:53:03,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:53:03,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:53:03,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:53:03,381 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:53:03,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 13:53:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:53:03,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 13:53:03,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:53:13,310 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~main__y~0#1|))) is different from true [2022-07-19 13:53:34,036 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) (_ +zero 11 53))))) is different from false [2022-07-19 13:53:36,126 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) (_ +zero 11 53))))) is different from true [2022-07-19 13:54:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:54:07,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:54:07,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:54:07,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545957303] [2022-07-19 13:54:07,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545957303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:54:07,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:54:07,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 13:54:07,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199362699] [2022-07-19 13:54:07,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:54:07,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 13:54:07,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:54:07,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 13:54:07,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2022-07-19 13:54:07,215 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:54:09,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 13:54:11,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-19 13:54:14,066 WARN L833 $PredicateComparison]: unable to prove that (and (fp.geq |c_ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~main__y~0#1|)))) is different from false [2022-07-19 13:54:14,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:54:14,077 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2022-07-19 13:54:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 13:54:14,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-19 13:54:14,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:54:14,078 INFO L225 Difference]: With dead ends: 27 [2022-07-19 13:54:14,078 INFO L226 Difference]: Without dead ends: 22 [2022-07-19 13:54:14,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=9, Invalid=5, Unknown=4, NotChecked=12, Total=30 [2022-07-19 13:54:14,081 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-19 13:54:14,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 16 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 31 Unchecked, 4.6s Time] [2022-07-19 13:54:14,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-19 13:54:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 14. [2022-07-19 13:54:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:54:14,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-07-19 13:54:14,086 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-07-19 13:54:14,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:54:14,086 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-07-19 13:54:14,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:54:14,087 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-07-19 13:54:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-19 13:54:14,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:54:14,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:54:14,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-19 13:54:14,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:54:14,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:54:14,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:54:14,295 INFO L85 PathProgramCache]: Analyzing trace with hash 519293970, now seen corresponding path program 1 times [2022-07-19 13:54:14,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:54:14,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730990159] [2022-07-19 13:54:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:54:14,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:54:14,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:54:14,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:54:14,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-19 13:54:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:54:14,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 13:54:14,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:54:27,179 WARN L833 $PredicateComparison]: unable to prove that (and (= (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| |c_ULTIMATE.start_main_~main__x~0#1|) |c_ULTIMATE.start_main_~main__x~0#1|) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.geq |c_ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0))) is different from false [2022-07-19 13:54:45,878 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-19 13:55:15,319 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0))))) (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-19 13:55:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:55:17,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:55:17,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:55:17,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730990159] [2022-07-19 13:55:17,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730990159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:55:17,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:55:17,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 13:55:17,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521971589] [2022-07-19 13:55:17,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:55:17,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 13:55:17,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:55:17,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 13:55:17,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=13, Unknown=3, NotChecked=24, Total=56 [2022-07-19 13:55:17,084 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:55:18,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:55:18,027 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2022-07-19 13:55:18,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 13:55:18,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-19 13:55:18,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:55:18,029 INFO L225 Difference]: With dead ends: 22 [2022-07-19 13:55:18,029 INFO L226 Difference]: Without dead ends: 14 [2022-07-19 13:55:18,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=16, Invalid=13, Unknown=3, NotChecked=24, Total=56 [2022-07-19 13:55:18,030 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 13:55:18,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 28 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 21 Unchecked, 0.9s Time] [2022-07-19 13:55:18,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-19 13:55:18,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-19 13:55:18,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:55:18,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2022-07-19 13:55:18,035 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2022-07-19 13:55:18,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:55:18,036 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2022-07-19 13:55:18,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:55:18,036 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-07-19 13:55:18,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-19 13:55:18,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:55:18,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:55:18,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-19 13:55:18,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:55:18,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:55:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:55:18,252 INFO L85 PathProgramCache]: Analyzing trace with hash -101291445, now seen corresponding path program 1 times [2022-07-19 13:55:18,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:55:18,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327866461] [2022-07-19 13:55:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:55:18,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:55:18,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:55:18,257 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:55:18,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-19 13:55:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:55:18,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 13:55:18,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:55:28,611 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (= (fp.div c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| .cse0) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-19 13:55:46,567 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (= (fp.div c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| .cse0) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse0)))) (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-19 13:56:02,918 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (let ((.cse0 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| .cse1))) (and (fp.geq .cse0 (_ +zero 11 53)) (not (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 105.0))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1))))) is different from false [2022-07-19 13:56:05,010 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (let ((.cse0 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| .cse1))) (and (fp.geq .cse0 (_ +zero 11 53)) (not (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 105.0))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1))))) is different from true