./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i -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 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:35:33,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:35:33,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:35:33,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:35:33,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:35:33,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:35:33,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:35:33,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:35:33,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:35:33,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:35:33,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:35:33,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:35:33,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:35:33,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:35:33,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:35:33,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:35:33,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:35:33,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:35:33,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:35:33,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:35:33,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:35:33,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:35:33,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:35:33,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:35:33,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:35:33,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:35:33,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:35:33,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:35:33,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:35:33,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:35:33,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:35:33,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:35:33,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:35:33,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:35:33,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:35:33,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:35:33,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:35:33,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:35:33,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:35:33,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:35:33,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:35:33,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 19:35:33,188 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:35:33,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:35:33,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:35:33,189 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:35:33,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:35:33,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:35:33,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:35:33,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:35:33,191 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:35:33,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:35:33,191 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:35:33,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 19:35:33,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:35:33,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:35:33,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:35:33,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:35:33,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:35:33,193 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:35:33,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:35:33,193 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:35:33,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:35:33,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:35:33,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:35:33,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:35:33,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:35:33,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:35:33,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:35:33,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:35:33,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 19:35:33,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 19:35:33,195 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:35:33,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:35:33,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:35:33,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 [2022-02-20 19:35:33,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:35:33,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:35:33,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:35:33,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:35:33,475 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:35:33,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i [2022-02-20 19:35:33,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/768ed3339/8d022f72f3f14bfb96888ab37b50fbdb/FLAGce2ea3603 [2022-02-20 19:35:33,936 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:35:33,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i [2022-02-20 19:35:33,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/768ed3339/8d022f72f3f14bfb96888ab37b50fbdb/FLAGce2ea3603 [2022-02-20 19:35:33,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/768ed3339/8d022f72f3f14bfb96888ab37b50fbdb [2022-02-20 19:35:33,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:35:33,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:35:33,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:35:33,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:35:33,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:35:33,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:35:33" (1/1) ... [2022-02-20 19:35:33,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77616d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:33, skipping insertion in model container [2022-02-20 19:35:33,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:35:33" (1/1) ... [2022-02-20 19:35:33,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:35:34,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:35:34,134 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/combinations/gcd_4+newton_1_2.i[1224,1237] [2022-02-20 19:35:34,185 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/combinations/gcd_4+newton_1_2.i[2806,2819] [2022-02-20 19:35:34,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:35:34,197 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:35:34,220 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/combinations/gcd_4+newton_1_2.i[1224,1237] [2022-02-20 19:35:34,247 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/combinations/gcd_4+newton_1_2.i[2806,2819] [2022-02-20 19:35:34,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:35:34,268 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:35:34,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:34 WrapperNode [2022-02-20 19:35:34,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:35:34,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:35:34,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:35:34,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:35:34,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:34" (1/1) ... [2022-02-20 19:35:34,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:34" (1/1) ... [2022-02-20 19:35:34,331 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2022-02-20 19:35:34,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:35:34,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:35:34,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:35:34,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:35:34,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:34" (1/1) ... [2022-02-20 19:35:34,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:34" (1/1) ... [2022-02-20 19:35:34,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:34" (1/1) ... [2022-02-20 19:35:34,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:34" (1/1) ... [2022-02-20 19:35:34,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:34" (1/1) ... [2022-02-20 19:35:34,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:34" (1/1) ... [2022-02-20 19:35:34,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:34" (1/1) ... [2022-02-20 19:35:34,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:35:34,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:35:34,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:35:34,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:35:34,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:34" (1/1) ... [2022-02-20 19:35:34,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:35:34,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:35:34,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 19:35:34,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 19:35:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:35:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 19:35:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:35:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:35:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-20 19:35:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-20 19:35:34,496 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:35:34,497 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:35:34,659 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:35:34,665 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:35:34,666 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 19:35:34,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:35:34 BoogieIcfgContainer [2022-02-20 19:35:34,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:35:34,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:35:34,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:35:34,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:35:34,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:35:33" (1/3) ... [2022-02-20 19:35:34,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5867d13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:35:34, skipping insertion in model container [2022-02-20 19:35:34,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:34" (2/3) ... [2022-02-20 19:35:34,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5867d13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:35:34, skipping insertion in model container [2022-02-20 19:35:34,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:35:34" (3/3) ... [2022-02-20 19:35:34,675 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_2.i [2022-02-20 19:35:34,680 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:35:34,681 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:35:34,729 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:35:34,735 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 19:35:34,741 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:35:34,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-20 19:35:34,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 19:35:34,800 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:35:34,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 19:35:34,801 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:35:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:35:34,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2022-02-20 19:35:34,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:35:34,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230478985] [2022-02-20 19:35:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:35:34,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:35:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:35:34,955 INFO L290 TraceCheckUtils]: 0: Hoare triple {36#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call #Ultimate.allocInit(12, 3); {36#true} is VALID [2022-02-20 19:35:34,956 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet9#1, main_#t~ret10#1, main_#t~ret11#1;assume -2147483648 <= main_#t~nondet9#1 && main_#t~nondet9#1 <= 2147483647; {36#true} is VALID [2022-02-20 19:35:34,956 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#true} assume !(0 != main_#t~nondet9#1);havoc main_#t~nondet9#1;assume { :begin_inline_main2 } true;havoc main2_#res#1;havoc main2_#t~nondet6#1, main2_#t~ret7#1, main2_#t~ret8#1, main2_~IN~0#1, main2_~x~1#1;main2_~IN~0#1 := main2_#t~nondet6#1;havoc main2_#t~nondet6#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~someBinaryFLOATComparisonOperation(main2_~IN~0#1, ~someUnaryFLOAToperation(0.4)) && ~someBinaryFLOATComparisonOperation(main2_~IN~0#1, 0.4) then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {36#true} is VALID [2022-02-20 19:35:34,957 INFO L290 TraceCheckUtils]: 3: Hoare triple {36#true} assume 0 == assume_abort_if_not_~cond#1;assume false; {37#false} is VALID [2022-02-20 19:35:34,958 INFO L290 TraceCheckUtils]: 4: Hoare triple {37#false} assume { :end_inline_assume_abort_if_not } true;assume { :begin_inline_f } true;f_#in~x#1 := main2_~IN~0#1;havoc f_#res#1;havoc f_~x#1;f_~x#1 := f_#in~x#1;f_#res#1 := ~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(f_~x#1, ~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(f_~x#1, f_~x#1), f_~x#1), 6.0)), ~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(f_~x#1, f_~x#1), f_~x#1), f_~x#1), f_~x#1), 120.0)), ~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(f_~x#1, f_~x#1), f_~x#1), f_~x#1), f_~x#1), f_~x#1), f_~x#1), 5040.0)); {37#false} is VALID [2022-02-20 19:35:34,958 INFO L290 TraceCheckUtils]: 5: Hoare triple {37#false} main2_#t~ret7#1 := f_#res#1;assume { :end_inline_f } true;assume { :begin_inline_fp } true;fp_#in~x#1 := main2_~IN~0#1;havoc fp_#res#1;havoc fp_~x#1;fp_~x#1 := fp_#in~x#1;fp_#res#1 := ~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(1), ~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(fp_~x#1, fp_~x#1), 2.0)), ~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(fp_~x#1, fp_~x#1), fp_~x#1), fp_~x#1), 24.0)), ~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(fp_~x#1, fp_~x#1), fp_~x#1), fp_~x#1), fp_~x#1), fp_~x#1), 720.0)); {37#false} is VALID [2022-02-20 19:35:34,958 INFO L290 TraceCheckUtils]: 6: Hoare triple {37#false} main2_#t~ret8#1 := fp_#res#1;assume { :end_inline_fp } true;main2_~x~1#1 := ~someBinaryArithmeticFLOAToperation(main2_~IN~0#1, ~someBinaryArithmeticFLOAToperation(main2_#t~ret7#1, main2_#t~ret8#1));havoc main2_#t~ret7#1;havoc main2_#t~ret8#1; {37#false} is VALID [2022-02-20 19:35:34,959 INFO L290 TraceCheckUtils]: 7: Hoare triple {37#false} assume !~someBinaryDOUBLEComparisonOperation(main2_~x~1#1, 0.1); {37#false} is VALID [2022-02-20 19:35:34,959 INFO L290 TraceCheckUtils]: 8: Hoare triple {37#false} assume !false; {37#false} is VALID [2022-02-20 19:35:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 19:35:34,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 19:35:34,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230478985] [2022-02-20 19:35:34,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230478985] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 19:35:34,961 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 19:35:34,962 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 19:35:34,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573739875] [2022-02-20 19:35:34,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 19:35:34,968 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-02-20 19:35:34,969 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 19:35:34,972 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 19:35:34,984 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:35:34,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 19:35:34,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 19:35:35,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 19:35:35,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 19:35:35,006 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 19:35:35,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:35:35,093 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-02-20 19:35:35,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 19:35:35,094 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-02-20 19:35:35,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 19:35:35,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 19:35:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 74 transitions. [2022-02-20 19:35:35,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 19:35:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 74 transitions. [2022-02-20 19:35:35,113 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 74 transitions. [2022-02-20 19:35:35,222 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 74 edges. 74 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:35:35,236 INFO L225 Difference]: With dead ends: 57 [2022-02-20 19:35:35,237 INFO L226 Difference]: Without dead ends: 26 [2022-02-20 19:35:35,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 19:35:35,249 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 19:35:35,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 19:35:35,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-20 19:35:35,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-02-20 19:35:35,277 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 19:35:35,277 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-20 19:35:35,278 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-20 19:35:35,279 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-20 19:35:35,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:35:35,283 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-02-20 19:35:35,283 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-02-20 19:35:35,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:35:35,284 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:35:35,284 INFO L74 IsIncluded]: Start isIncluded. First operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 26 states. [2022-02-20 19:35:35,285 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 26 states. [2022-02-20 19:35:35,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:35:35,289 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-02-20 19:35:35,289 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-02-20 19:35:35,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:35:35,290 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:35:35,290 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 19:35:35,290 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 19:35:35,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-20 19:35:35,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-02-20 19:35:35,294 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-02-20 19:35:35,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 19:35:35,295 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-02-20 19:35:35,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 19:35:35,296 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-02-20 19:35:35,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 19:35:35,296 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:35:35,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 19:35:35,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 19:35:35,297 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:35:35,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:35:35,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2022-02-20 19:35:35,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:35:35,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555019808] [2022-02-20 19:35:35,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:35:35,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:35:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:35:35,319 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 19:35:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:35:35,348 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 19:35:35,348 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 19:35:35,357 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-02-20 19:35:35,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-02-20 19:35:35,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 19:35:35,362 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 19:35:35,365 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 19:35:35,397 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-20 19:35:35,397 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-02-20 19:35:35,397 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-20 19:35:35,397 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2022-02-20 19:35:35,398 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2022-02-20 19:35:35,398 WARN L170 areAnnotationChecker]: L115 has no Hoare annotation [2022-02-20 19:35:35,398 WARN L170 areAnnotationChecker]: L115 has no Hoare annotation [2022-02-20 19:35:35,398 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2022-02-20 19:35:35,398 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2022-02-20 19:35:35,398 WARN L170 areAnnotationChecker]: L26-2 has no Hoare annotation [2022-02-20 19:35:35,398 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2022-02-20 19:35:35,398 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2022-02-20 19:35:35,399 WARN L170 areAnnotationChecker]: L82 has no Hoare annotation [2022-02-20 19:35:35,399 WARN L170 areAnnotationChecker]: L82 has no Hoare annotation [2022-02-20 19:35:35,399 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-02-20 19:35:35,399 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-02-20 19:35:35,399 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-02-20 19:35:35,400 WARN L170 areAnnotationChecker]: L33-2 has no Hoare annotation [2022-02-20 19:35:35,400 WARN L170 areAnnotationChecker]: L33-2 has no Hoare annotation [2022-02-20 19:35:35,400 WARN L170 areAnnotationChecker]: L81 has no Hoare annotation [2022-02-20 19:35:35,400 WARN L170 areAnnotationChecker]: L62-1 has no Hoare annotation [2022-02-20 19:35:35,401 WARN L170 areAnnotationChecker]: L62-1 has no Hoare annotation [2022-02-20 19:35:35,401 WARN L170 areAnnotationChecker]: L63 has no Hoare annotation [2022-02-20 19:35:35,401 WARN L170 areAnnotationChecker]: L63 has no Hoare annotation [2022-02-20 19:35:35,401 WARN L170 areAnnotationChecker]: L64 has no Hoare annotation [2022-02-20 19:35:35,401 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2022-02-20 19:35:35,401 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2022-02-20 19:35:35,402 WARN L170 areAnnotationChecker]: L87 has no Hoare annotation [2022-02-20 19:35:35,402 WARN L170 areAnnotationChecker]: L66 has no Hoare annotation [2022-02-20 19:35:35,402 WARN L170 areAnnotationChecker]: L47 has no Hoare annotation [2022-02-20 19:35:35,402 WARN L170 areAnnotationChecker]: L41-2 has no Hoare annotation [2022-02-20 19:35:35,402 WARN L170 areAnnotationChecker]: L41-2 has no Hoare annotation [2022-02-20 19:35:35,402 WARN L170 areAnnotationChecker]: L41-2 has no Hoare annotation [2022-02-20 19:35:35,402 WARN L170 areAnnotationChecker]: L92 has no Hoare annotation [2022-02-20 19:35:35,402 WARN L170 areAnnotationChecker]: L113 has no Hoare annotation [2022-02-20 19:35:35,402 WARN L170 areAnnotationChecker]: L62 has no Hoare annotation [2022-02-20 19:35:35,403 WARN L170 areAnnotationChecker]: L62 has no Hoare annotation [2022-02-20 19:35:35,403 WARN L170 areAnnotationChecker]: L40-2 has no Hoare annotation [2022-02-20 19:35:35,403 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2022-02-20 19:35:35,403 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2022-02-20 19:35:35,403 WARN L170 areAnnotationChecker]: L108 has no Hoare annotation [2022-02-20 19:35:35,403 WARN L170 areAnnotationChecker]: L108 has no Hoare annotation [2022-02-20 19:35:35,403 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 19:35:35,403 WARN L170 areAnnotationChecker]: L109 has no Hoare annotation [2022-02-20 19:35:35,403 WARN L170 areAnnotationChecker]: L109 has no Hoare annotation [2022-02-20 19:35:35,404 WARN L170 areAnnotationChecker]: L108-2 has no Hoare annotation [2022-02-20 19:35:35,404 WARN L170 areAnnotationChecker]: L111 has no Hoare annotation [2022-02-20 19:35:35,404 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-02-20 19:35:35,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 07:35:35 BoogieIcfgContainer [2022-02-20 19:35:35,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 19:35:35,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-20 19:35:35,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-20 19:35:35,407 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-20 19:35:35,408 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:35:34" (3/4) ... [2022-02-20 19:35:35,411 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-02-20 19:35:35,411 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-20 19:35:35,414 INFO L158 Benchmark]: Toolchain (without parser) took 1446.19ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 53.1MB in the beginning and 53.5MB in the end (delta: -340.7kB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2022-02-20 19:35:35,414 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 86.0MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:35:35,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.26ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 53.0MB in the beginning and 79.4MB in the end (delta: -26.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 19:35:35,418 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.93ms. Allocated memory is still 104.9MB. Free memory was 79.4MB in the beginning and 77.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 19:35:35,421 INFO L158 Benchmark]: Boogie Preprocessor took 42.26ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 76.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 19:35:35,422 INFO L158 Benchmark]: RCFGBuilder took 292.29ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 63.3MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-02-20 19:35:35,422 INFO L158 Benchmark]: TraceAbstraction took 736.86ms. Allocated memory is still 104.9MB. Free memory was 63.0MB in the beginning and 53.7MB in the end (delta: 9.2MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2022-02-20 19:35:35,422 INFO L158 Benchmark]: Witness Printer took 4.78ms. Allocated memory is still 104.9MB. Free memory was 53.7MB in the beginning and 53.5MB in the end (delta: 232.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:35:35,430 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 86.0MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.26ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 53.0MB in the beginning and 79.4MB in the end (delta: -26.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.93ms. Allocated memory is still 104.9MB. Free memory was 79.4MB in the beginning and 77.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.26ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 76.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 292.29ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 63.3MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 736.86ms. Allocated memory is still 104.9MB. Free memory was 63.0MB in the beginning and 53.7MB in the end (delta: 9.2MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Witness Printer took 4.78ms. Allocated memory is still 104.9MB. Free memory was 53.7MB in the beginning and 53.5MB in the end (delta: 232.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 100. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=49] [L109] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 40 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-02-20 19:35:35,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i -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 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:35:37,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:35:37,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:35:37,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:35:37,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:35:37,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:35:37,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:35:37,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:35:37,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:35:37,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:35:37,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:35:37,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:35:37,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:35:37,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:35:37,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:35:37,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:35:37,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:35:37,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:35:37,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:35:37,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:35:37,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:35:37,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:35:37,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:35:37,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:35:37,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:35:37,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:35:37,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:35:37,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:35:37,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:35:37,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:35:37,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:35:37,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:35:37,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:35:37,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:35:37,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:35:37,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:35:37,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:35:37,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:35:37,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:35:37,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:35:37,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:35:37,563 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 19:35:37,605 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:35:37,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:35:37,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:35:37,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:35:37,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:35:37,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:35:37,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:35:37,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:35:37,609 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:35:37,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:35:37,610 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:35:37,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:35:37,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:35:37,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:35:37,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:35:37,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:35:37,611 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 19:35:37,611 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 19:35:37,611 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 19:35:37,611 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:35:37,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:35:37,612 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:35:37,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:35:37,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:35:37,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:35:37,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:35:37,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:35:37,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:35:37,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:35:37,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:35:37,629 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 19:35:37,629 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 19:35:37,629 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:35:37,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:35:37,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:35:37,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 19:35:37,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65d58fd3e8c5638a351c469fc6c6b86b0bc6efe1f0f08d6df11bfe5a3616f3a3 [2022-02-20 19:35:37,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:35:37,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:35:37,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:35:37,988 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:35:37,989 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:35:37,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_2.i [2022-02-20 19:35:38,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dc1744b8/f1045906e32f4928a486999309b63b38/FLAGacd838adc [2022-02-20 19:35:38,500 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:35:38,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_2.i [2022-02-20 19:35:38,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dc1744b8/f1045906e32f4928a486999309b63b38/FLAGacd838adc [2022-02-20 19:35:38,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dc1744b8/f1045906e32f4928a486999309b63b38 [2022-02-20 19:35:38,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:35:38,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:35:38,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:35:38,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:35:38,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:35:38,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:35:38" (1/1) ... [2022-02-20 19:35:38,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0f1af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:38, skipping insertion in model container [2022-02-20 19:35:38,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:35:38" (1/1) ... [2022-02-20 19:35:38,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:35:38,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:35:39,065 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/combinations/gcd_4+newton_1_2.i[1224,1237] [2022-02-20 19:35:39,135 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/combinations/gcd_4+newton_1_2.i[2806,2819] [2022-02-20 19:35:39,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:35:39,156 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:35:39,173 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/combinations/gcd_4+newton_1_2.i[1224,1237] [2022-02-20 19:35:39,199 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/combinations/gcd_4+newton_1_2.i[2806,2819] [2022-02-20 19:35:39,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:35:39,220 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:35:39,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:39 WrapperNode [2022-02-20 19:35:39,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:35:39,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:35:39,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:35:39,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:35:39,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:39" (1/1) ... [2022-02-20 19:35:39,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:39" (1/1) ... [2022-02-20 19:35:39,280 INFO L137 Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 70 [2022-02-20 19:35:39,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:35:39,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:35:39,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:35:39,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:35:39,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:39" (1/1) ... [2022-02-20 19:35:39,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:39" (1/1) ... [2022-02-20 19:35:39,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:39" (1/1) ... [2022-02-20 19:35:39,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:39" (1/1) ... [2022-02-20 19:35:39,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:39" (1/1) ... [2022-02-20 19:35:39,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:39" (1/1) ... [2022-02-20 19:35:39,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:39" (1/1) ... [2022-02-20 19:35:39,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:35:39,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:35:39,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:35:39,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:35:39,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:39" (1/1) ... [2022-02-20 19:35:39,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:35:39,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:35:39,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 19:35:39,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 19:35:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:35:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 19:35:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:35:39,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:35:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-20 19:35:39,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-20 19:35:39,473 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:35:39,474 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:35:44,483 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:35:44,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:35:44,488 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 19:35:44,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:35:44 BoogieIcfgContainer [2022-02-20 19:35:44,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:35:44,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:35:44,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:35:44,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:35:44,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:35:38" (1/3) ... [2022-02-20 19:35:44,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7528d004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:35:44, skipping insertion in model container [2022-02-20 19:35:44,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:35:39" (2/3) ... [2022-02-20 19:35:44,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7528d004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:35:44, skipping insertion in model container [2022-02-20 19:35:44,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:35:44" (3/3) ... [2022-02-20 19:35:44,496 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_2.i [2022-02-20 19:35:44,500 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:35:44,500 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:35:44,549 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:35:44,555 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 19:35:44,555 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:35:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-20 19:35:44,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 19:35:44,574 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:35:44,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 19:35:44,575 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:35:44,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:35:44,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2022-02-20 19:35:44,586 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 19:35:44,586 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341333370] [2022-02-20 19:35:44,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:35:44,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 19:35:44,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 19:35:44,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 19:35:44,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 19:35:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:35:45,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-02-20 19:35:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:35:45,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 19:35:45,607 INFO L290 TraceCheckUtils]: 0: Hoare triple {36#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(8bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32); {36#true} is VALID [2022-02-20 19:35:45,608 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet9#1, main_#t~ret10#1, main_#t~ret11#1; {36#true} is VALID [2022-02-20 19:35:45,609 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#true} assume !(0bv32 != main_#t~nondet9#1);havoc main_#t~nondet9#1;assume { :begin_inline_main2 } true;havoc main2_#res#1;havoc main2_#t~nondet6#1, main2_#t~ret7#1, main2_#t~ret8#1, main2_~IN~0#1, main2_~x~1#1;main2_~IN~0#1 := main2_#t~nondet6#1;havoc main2_#t~nondet6#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~fp.gt~FLOAT(main2_~IN~0#1, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 0.4))) && ~fp.lt~FLOAT(main2_~IN~0#1, ~to_fp~FLOAT(currentRoundingMode, 0.4)) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {36#true} is VALID [2022-02-20 19:35:45,609 INFO L290 TraceCheckUtils]: 3: Hoare triple {36#true} assume 0bv32 == assume_abort_if_not_~cond#1;assume false; {37#false} is VALID [2022-02-20 19:35:45,610 INFO L290 TraceCheckUtils]: 4: Hoare triple {37#false} assume { :end_inline_assume_abort_if_not } true;assume { :begin_inline_f } true;f_#in~x#1 := main2_~IN~0#1;havoc f_#res#1;havoc f_~x#1;f_~x#1 := f_#in~x#1;f_#res#1 := ~fp.add~FLOAT(currentRoundingMode, ~fp.add~FLOAT(currentRoundingMode, ~fp.sub~FLOAT(currentRoundingMode, f_~x#1, ~fp.div~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, f_~x#1, f_~x#1), f_~x#1), ~to_fp~FLOAT(currentRoundingMode, 6.0))), ~fp.div~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, f_~x#1, f_~x#1), f_~x#1), f_~x#1), f_~x#1), ~to_fp~FLOAT(currentRoundingMode, 120.0))), ~fp.div~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, f_~x#1, f_~x#1), f_~x#1), f_~x#1), f_~x#1), f_~x#1), f_~x#1), ~to_fp~FLOAT(currentRoundingMode, 5040.0))); {37#false} is VALID [2022-02-20 19:35:45,610 INFO L290 TraceCheckUtils]: 5: Hoare triple {37#false} main2_#t~ret7#1 := f_#res#1;assume { :end_inline_f } true;assume { :begin_inline_fp } true;fp_#in~x#1 := main2_~IN~0#1;havoc fp_#res#1;havoc fp_~x#1;fp_~x#1 := fp_#in~x#1;fp_#res#1 := ~fp.add~FLOAT(currentRoundingMode, ~fp.add~FLOAT(currentRoundingMode, ~fp.sub~FLOAT(currentRoundingMode, ~convertINTToFLOAT(currentRoundingMode, 1bv32), ~fp.div~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, fp_~x#1, fp_~x#1), ~to_fp~FLOAT(currentRoundingMode, 2.0))), ~fp.div~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, fp_~x#1, fp_~x#1), fp_~x#1), fp_~x#1), ~to_fp~FLOAT(currentRoundingMode, 24.0))), ~fp.div~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, fp_~x#1, fp_~x#1), fp_~x#1), fp_~x#1), fp_~x#1), fp_~x#1), ~to_fp~FLOAT(currentRoundingMode, 720.0))); {37#false} is VALID [2022-02-20 19:35:45,611 INFO L290 TraceCheckUtils]: 6: Hoare triple {37#false} main2_#t~ret8#1 := fp_#res#1;assume { :end_inline_fp } true;main2_~x~1#1 := ~fp.sub~FLOAT(currentRoundingMode, main2_~IN~0#1, ~fp.div~FLOAT(currentRoundingMode, main2_#t~ret7#1, main2_#t~ret8#1));havoc main2_#t~ret7#1;havoc main2_#t~ret8#1; {37#false} is VALID [2022-02-20 19:35:45,611 INFO L290 TraceCheckUtils]: 7: Hoare triple {37#false} assume !~fp.lt~DOUBLE(~convertFLOATToDOUBLE(currentRoundingMode, main2_~x~1#1), ~to_fp~DOUBLE(currentRoundingMode, 0.1)); {37#false} is VALID [2022-02-20 19:35:45,611 INFO L290 TraceCheckUtils]: 8: Hoare triple {37#false} assume !false; {37#false} is VALID [2022-02-20 19:35:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 19:35:45,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 19:35:45,613 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 19:35:45,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341333370] [2022-02-20 19:35:45,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341333370] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 19:35:45,614 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 19:35:45,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 19:35:45,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226390810] [2022-02-20 19:35:45,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 19:35:45,620 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-02-20 19:35:45,621 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 19:35:45,623 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 19:35:47,644 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:35:47,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 19:35:47,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 19:35:47,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 19:35:47,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 19:35:47,669 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 19:35:53,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:35:53,627 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-02-20 19:35:53,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 19:35:53,627 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-02-20 19:35:53,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 19:35:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 19:35:53,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 74 transitions. [2022-02-20 19:35:53,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 19:35:53,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 74 transitions. [2022-02-20 19:35:53,643 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 74 transitions. [2022-02-20 19:35:57,927 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 74 edges. 74 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:35:57,933 INFO L225 Difference]: With dead ends: 57 [2022-02-20 19:35:57,933 INFO L226 Difference]: Without dead ends: 26 [2022-02-20 19:35:57,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 19:35:57,938 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 19:35:57,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 19:35:57,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-20 19:35:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-02-20 19:35:57,960 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 19:35:57,960 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-20 19:35:57,961 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-20 19:35:57,962 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-20 19:35:57,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:35:57,965 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-02-20 19:35:57,965 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-02-20 19:35:57,966 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:35:57,966 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:35:57,967 INFO L74 IsIncluded]: Start isIncluded. First operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 26 states. [2022-02-20 19:35:57,976 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 26 states. [2022-02-20 19:35:57,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:35:57,979 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-02-20 19:35:57,979 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-02-20 19:35:57,979 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:35:57,980 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:35:57,980 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 19:35:57,980 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 19:35:57,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-20 19:35:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-02-20 19:35:57,984 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-02-20 19:35:57,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 19:35:57,984 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-02-20 19:35:57,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-02-20 19:35:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-02-20 19:35:57,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 19:35:57,986 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:35:57,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 19:35:58,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-02-20 19:35:58,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 19:35:58,193 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:35:58,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:35:58,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2022-02-20 19:35:58,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 19:35:58,195 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624816924] [2022-02-20 19:35:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:35:58,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 19:35:58,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 19:35:58,197 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 19:35:58,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process