./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bff053df41c1fc922299a13f2dac2a98df2d05e146d51bf11ac9e37ddfefad6a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 17:26:26,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 17:26:26,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 17:26:26,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 17:26:26,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 17:26:26,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 17:26:26,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 17:26:26,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 17:26:26,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 17:26:26,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 17:26:26,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 17:26:26,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 17:26:26,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 17:26:26,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 17:26:26,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 17:26:26,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 17:26:26,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 17:26:26,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 17:26:26,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 17:26:26,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 17:26:26,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 17:26:26,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 17:26:26,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 17:26:26,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 17:26:26,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 17:26:26,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 17:26:26,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 17:26:26,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 17:26:26,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 17:26:26,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 17:26:26,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 17:26:26,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 17:26:26,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 17:26:26,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 17:26:26,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 17:26:26,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 17:26:26,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 17:26:26,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 17:26:26,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 17:26:26,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 17:26:26,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 17:26:26,155 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 17:26:26,176 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 17:26:26,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 17:26:26,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 17:26:26,176 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 17:26:26,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 17:26:26,177 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 17:26:26,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 17:26:26,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 17:26:26,178 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 17:26:26,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 17:26:26,178 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 17:26:26,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 17:26:26,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 17:26:26,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 17:26:26,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 17:26:26,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 17:26:26,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 17:26:26,179 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 17:26:26,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 17:26:26,180 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 17:26:26,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 17:26:26,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 17:26:26,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 17:26:26,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 17:26:26,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:26:26,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 17:26:26,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 17:26:26,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 17:26:26,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 17:26:26,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 17:26:26,181 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 17:26:26,181 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 17:26:26,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 17:26:26,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bff053df41c1fc922299a13f2dac2a98df2d05e146d51bf11ac9e37ddfefad6a [2022-02-20 17:26:26,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 17:26:26,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 17:26:26,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 17:26:26,395 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 17:26:26,395 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 17:26:26,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c [2022-02-20 17:26:26,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a8a48ac/b41ab4a54cd743758edc3ed5c893f67a/FLAG1971e1a72 [2022-02-20 17:26:26,782 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 17:26:26,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c [2022-02-20 17:26:26,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a8a48ac/b41ab4a54cd743758edc3ed5c893f67a/FLAG1971e1a72 [2022-02-20 17:26:27,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a8a48ac/b41ab4a54cd743758edc3ed5c893f67a [2022-02-20 17:26:27,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 17:26:27,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 17:26:27,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 17:26:27,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 17:26:27,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 17:26:27,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:26:27" (1/1) ... [2022-02-20 17:26:27,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e37ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:27, skipping insertion in model container [2022-02-20 17:26:27,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:26:27" (1/1) ... [2022-02-20 17:26:27,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 17:26:27,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 17:26:27,373 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c[712,725] [2022-02-20 17:26:27,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:26:27,391 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 17:26:27,399 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c[712,725] [2022-02-20 17:26:27,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:26:27,413 INFO L208 MainTranslator]: Completed translation [2022-02-20 17:26:27,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:27 WrapperNode [2022-02-20 17:26:27,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 17:26:27,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 17:26:27,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 17:26:27,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 17:26:27,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:27" (1/1) ... [2022-02-20 17:26:27,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:27" (1/1) ... [2022-02-20 17:26:27,435 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2022-02-20 17:26:27,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 17:26:27,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 17:26:27,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 17:26:27,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 17:26:27,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:27" (1/1) ... [2022-02-20 17:26:27,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:27" (1/1) ... [2022-02-20 17:26:27,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:27" (1/1) ... [2022-02-20 17:26:27,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:27" (1/1) ... [2022-02-20 17:26:27,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:27" (1/1) ... [2022-02-20 17:26:27,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:27" (1/1) ... [2022-02-20 17:26:27,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:27" (1/1) ... [2022-02-20 17:26:27,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 17:26:27,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 17:26:27,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 17:26:27,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 17:26:27,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:27" (1/1) ... [2022-02-20 17:26:27,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:26:27,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:26:27,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 17:26:27,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 17:26:27,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 17:26:27,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 17:26:27,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 17:26:27,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 17:26:27,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-20 17:26:27,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-20 17:26:27,575 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 17:26:27,576 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 17:26:27,683 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 17:26:27,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 17:26:27,693 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 17:26:27,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:26:27 BoogieIcfgContainer [2022-02-20 17:26:27,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 17:26:27,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 17:26:27,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 17:26:27,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 17:26:27,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 05:26:27" (1/3) ... [2022-02-20 17:26:27,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f8b8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:26:27, skipping insertion in model container [2022-02-20 17:26:27,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:27" (2/3) ... [2022-02-20 17:26:27,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f8b8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:26:27, skipping insertion in model container [2022-02-20 17:26:27,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:26:27" (3/3) ... [2022-02-20 17:26:27,709 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound20.c [2022-02-20 17:26:27,713 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 17:26:27,713 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 17:26:27,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 17:26:27,766 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 17:26:27,767 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 17:26:27,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-20 17:26:27,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:26:27,784 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:26:27,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:26:27,785 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:26:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:26:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2022-02-20 17:26:27,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:26:27,795 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365943963] [2022-02-20 17:26:27,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:26:27,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:26:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:26:27,907 INFO L290 TraceCheckUtils]: 0: Hoare triple {21#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {21#true} is VALID [2022-02-20 17:26:27,907 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_~r~0#1, main_~a~0#1, main_~x~0#1;havoc main_~r~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~someBinaryDOUBLEComparisonOperation(main_~a~0#1, ~convertINTToDOUBLE(0)) && ~someBinaryDOUBLEComparisonOperation(main_~a~0#1, ~convertINTToDOUBLE(20)) then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {21#true} is VALID [2022-02-20 17:26:27,908 INFO L290 TraceCheckUtils]: 2: Hoare triple {21#true} assume 0 == assume_abort_if_not_~cond#1;assume false; {22#false} is VALID [2022-02-20 17:26:27,908 INFO L290 TraceCheckUtils]: 3: Hoare triple {22#false} assume { :end_inline_assume_abort_if_not } true;main_~x~0#1 := ~someBinaryArithmeticDOUBLEoperation(main_~a~0#1, 2.0);main_~r~0#1 := 0; {22#false} is VALID [2022-02-20 17:26:27,909 INFO L290 TraceCheckUtils]: 4: Hoare triple {22#false} assume false; {22#false} is VALID [2022-02-20 17:26:27,909 INFO L272 TraceCheckUtils]: 5: Hoare triple {22#false} call __VERIFIER_assert((if 0 == ~convertDOUBLEToINT(~someBinaryArithmeticDOUBLEoperation(~someBinaryArithmeticDOUBLEoperation(~someBinaryArithmeticDOUBLEoperation(~convertINTToDOUBLE(main_~r~0#1 * main_~r~0#1), main_~a~0#1), ~convertINTToDOUBLE(main_~r~0#1)), ~someBinaryArithmeticDOUBLEoperation(~convertINTToDOUBLE(2), main_~x~0#1))) then 1 else 0)); {22#false} is VALID [2022-02-20 17:26:27,909 INFO L290 TraceCheckUtils]: 6: Hoare triple {22#false} ~cond := #in~cond; {22#false} is VALID [2022-02-20 17:26:27,909 INFO L290 TraceCheckUtils]: 7: Hoare triple {22#false} assume 0 == ~cond; {22#false} is VALID [2022-02-20 17:26:27,909 INFO L290 TraceCheckUtils]: 8: Hoare triple {22#false} assume !false; {22#false} is VALID [2022-02-20 17:26:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 17:26:27,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 17:26:27,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365943963] [2022-02-20 17:26:27,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365943963] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:26:27,912 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:26:27,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 17:26:27,914 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935786420] [2022-02-20 17:26:27,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:26:27,918 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-02-20 17:26:27,919 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:26:27,921 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:27,931 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:26:27,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 17:26:27,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 17:26:27,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 17:26:27,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 17:26:27,947 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:27,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:26:27,977 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2022-02-20 17:26:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 17:26:27,977 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-02-20 17:26:27,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:26:27,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2022-02-20 17:26:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2022-02-20 17:26:27,987 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 44 transitions. [2022-02-20 17:26:28,048 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:26:28,053 INFO L225 Difference]: With dead ends: 33 [2022-02-20 17:26:28,054 INFO L226 Difference]: Without dead ends: 14 [2022-02-20 17:26:28,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 17:26:28,060 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 17:26:28,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 17:26:28,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-20 17:26:28,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-20 17:26:28,085 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:26:28,086 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:28,086 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:28,087 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:26:28,093 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-02-20 17:26:28,093 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-02-20 17:26:28,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:26:28,094 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:26:28,095 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 17:26:28,095 INFO L87 Difference]: Start difference. First operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 17:26:28,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:26:28,098 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-02-20 17:26:28,098 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-02-20 17:26:28,099 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:26:28,099 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:26:28,099 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:26:28,099 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:26:28,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:28,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-02-20 17:26:28,106 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2022-02-20 17:26:28,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:26:28,107 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-02-20 17:26:28,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:28,107 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-02-20 17:26:28,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:26:28,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:26:28,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:26:28,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 17:26:28,109 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:26:28,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:26:28,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2022-02-20 17:26:28,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:26:28,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296688003] [2022-02-20 17:26:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:26:28,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:26:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 17:26:28,139 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 17:26:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 17:26:28,159 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 17:26:28,159 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 17:26:28,160 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 17:26:28,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 17:26:28,168 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 17:26:28,171 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 17:26:28,183 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call __VERIFIER_assert((if 0 == ~convertDOUBLEToINT(~someBinaryArithmeticDOUBLEoperation(~someBinaryArithmeticDOUBLEoperation(~someBinaryArithmeticDOUBLEoperation(~convertINTToDOUBLE(~r~0 * ~r~0), ~a~0), ~convertINTToDOUBLE(~r~0)), ~someBinaryArithmeticDOUBLEoperation(~convertINTToDOUBLE(2), ~x~0))) then 1 else 0)); [2022-02-20 17:26:28,184 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 17:26:28,192 INFO L158 Benchmark]: Toolchain (without parser) took 947.79ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 69.5MB in the beginning and 64.4MB in the end (delta: 5.1MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2022-02-20 17:26:28,193 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 66.8MB in the beginning and 66.7MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 17:26:28,194 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.89ms. Allocated memory is still 90.2MB. Free memory was 69.5MB in the beginning and 65.7MB in the end (delta: 3.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-20 17:26:28,194 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.36ms. Allocated memory is still 90.2MB. Free memory was 65.7MB in the beginning and 64.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 17:26:28,195 INFO L158 Benchmark]: Boogie Preprocessor took 23.80ms. Allocated memory is still 90.2MB. Free memory was 64.0MB in the beginning and 62.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 17:26:28,195 INFO L158 Benchmark]: RCFGBuilder took 234.43ms. Allocated memory is still 90.2MB. Free memory was 62.9MB in the beginning and 53.8MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 17:26:28,197 INFO L158 Benchmark]: TraceAbstraction took 493.13ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.4MB in the beginning and 64.4MB in the end (delta: -11.0MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-02-20 17:26:28,199 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 0.16ms. Allocated memory is still 90.2MB. Free memory was 66.8MB in the beginning and 66.7MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.89ms. Allocated memory is still 90.2MB. Free memory was 69.5MB in the beginning and 65.7MB in the end (delta: 3.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.36ms. Allocated memory is still 90.2MB. Free memory was 65.7MB in the beginning and 64.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.80ms. Allocated memory is still 90.2MB. Free memory was 64.0MB in the beginning and 62.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 234.43ms. Allocated memory is still 90.2MB. Free memory was 62.9MB in the beginning and 53.8MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 493.13ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.4MB in the beginning and 64.4MB in the end (delta: -11.0MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 17:26:28,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bff053df41c1fc922299a13f2dac2a98df2d05e146d51bf11ac9e37ddfefad6a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 17:26:29,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 17:26:29,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 17:26:29,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 17:26:29,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 17:26:29,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 17:26:29,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 17:26:29,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 17:26:29,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 17:26:29,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 17:26:29,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 17:26:29,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 17:26:29,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 17:26:29,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 17:26:29,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 17:26:29,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 17:26:29,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 17:26:29,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 17:26:29,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 17:26:29,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 17:26:29,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 17:26:29,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 17:26:29,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 17:26:29,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 17:26:29,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 17:26:29,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 17:26:29,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 17:26:29,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 17:26:29,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 17:26:29,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 17:26:29,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 17:26:29,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 17:26:29,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 17:26:29,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 17:26:29,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 17:26:29,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 17:26:29,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 17:26:29,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 17:26:29,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 17:26:29,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 17:26:29,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 17:26:29,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 17:26:29,965 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 17:26:29,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 17:26:29,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 17:26:29,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 17:26:29,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 17:26:29,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 17:26:29,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 17:26:29,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 17:26:29,968 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 17:26:29,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 17:26:29,969 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 17:26:29,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 17:26:29,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 17:26:29,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 17:26:29,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 17:26:29,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 17:26:29,970 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 17:26:29,970 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 17:26:29,970 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 17:26:29,970 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 17:26:29,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 17:26:29,971 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 17:26:29,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 17:26:29,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 17:26:29,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 17:26:29,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 17:26:29,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:26:29,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 17:26:29,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 17:26:29,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 17:26:29,972 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 17:26:29,972 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 17:26:29,972 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 17:26:29,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 17:26:29,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 17:26:29,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 17:26:29,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bff053df41c1fc922299a13f2dac2a98df2d05e146d51bf11ac9e37ddfefad6a [2022-02-20 17:26:30,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 17:26:30,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 17:26:30,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 17:26:30,228 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 17:26:30,229 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 17:26:30,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c [2022-02-20 17:26:30,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f87b7a8fd/b4610327fe2f41718798f500d69ea9f9/FLAGfdc707aec [2022-02-20 17:26:30,634 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 17:26:30,634 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c [2022-02-20 17:26:30,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f87b7a8fd/b4610327fe2f41718798f500d69ea9f9/FLAGfdc707aec [2022-02-20 17:26:30,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f87b7a8fd/b4610327fe2f41718798f500d69ea9f9 [2022-02-20 17:26:30,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 17:26:30,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 17:26:30,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 17:26:30,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 17:26:30,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 17:26:30,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582a861f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30, skipping insertion in model container [2022-02-20 17:26:30,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 17:26:30,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 17:26:30,804 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c[712,725] [2022-02-20 17:26:30,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:26:30,835 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 17:26:30,851 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c[712,725] [2022-02-20 17:26:30,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:26:30,888 INFO L208 MainTranslator]: Completed translation [2022-02-20 17:26:30,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30 WrapperNode [2022-02-20 17:26:30,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 17:26:30,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 17:26:30,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 17:26:30,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 17:26:30,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,922 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-02-20 17:26:30,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 17:26:30,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 17:26:30,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 17:26:30,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 17:26:30,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 17:26:30,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 17:26:30,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 17:26:30,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 17:26:30,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:26:30,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:26:30,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 17:26:31,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 17:26:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 17:26:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 17:26:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 17:26:31,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 17:26:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-20 17:26:31,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-20 17:26:31,080 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 17:26:31,082 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 17:26:31,736 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 17:26:31,740 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 17:26:31,740 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 17:26:31,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:26:31 BoogieIcfgContainer [2022-02-20 17:26:31,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 17:26:31,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 17:26:31,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 17:26:31,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 17:26:31,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 05:26:30" (1/3) ... [2022-02-20 17:26:31,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc4811f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:26:31, skipping insertion in model container [2022-02-20 17:26:31,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (2/3) ... [2022-02-20 17:26:31,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc4811f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:26:31, skipping insertion in model container [2022-02-20 17:26:31,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:26:31" (3/3) ... [2022-02-20 17:26:31,746 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound20.c [2022-02-20 17:26:31,749 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 17:26:31,749 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 17:26:31,780 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 17:26:31,784 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 17:26:31,785 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 17:26:31,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-20 17:26:31,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:26:31,805 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:26:31,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:26:31,806 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:26:31,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:26:31,810 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2022-02-20 17:26:31,817 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 17:26:31,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208575035] [2022-02-20 17:26:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:26:31,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 17:26:31,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 17:26:31,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 17:26:31,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 17:26:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:26:32,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2022-02-20 17:26:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:26:32,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 17:26:32,188 INFO L290 TraceCheckUtils]: 0: Hoare triple {21#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(10bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32); {21#true} is VALID [2022-02-20 17:26:32,188 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_~r~0#1, main_~a~0#1, main_~x~0#1;havoc main_~r~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~fp.geq~DOUBLE(main_~a~0#1, ~convertINTToDOUBLE(currentRoundingMode, 0bv32)) && ~fp.leq~DOUBLE(main_~a~0#1, ~convertINTToDOUBLE(currentRoundingMode, 20bv32)) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {21#true} is VALID [2022-02-20 17:26:32,189 INFO L290 TraceCheckUtils]: 2: Hoare triple {21#true} assume 0bv32 == assume_abort_if_not_~cond#1;assume false; {22#false} is VALID [2022-02-20 17:26:32,189 INFO L290 TraceCheckUtils]: 3: Hoare triple {22#false} assume { :end_inline_assume_abort_if_not } true;main_~x~0#1 := ~fp.div~DOUBLE(currentRoundingMode, main_~a~0#1, ~to_fp~DOUBLE(currentRoundingMode, 2.0));main_~r~0#1 := 0bv32; {22#false} is VALID [2022-02-20 17:26:32,189 INFO L290 TraceCheckUtils]: 4: Hoare triple {22#false} assume false; {22#false} is VALID [2022-02-20 17:26:32,190 INFO L272 TraceCheckUtils]: 5: Hoare triple {22#false} call __VERIFIER_assert((if 0bv32 == ~convertDOUBLEToINT(~roundTowardZero, ~fp.add~DOUBLE(currentRoundingMode, ~fp.sub~DOUBLE(currentRoundingMode, ~fp.sub~DOUBLE(currentRoundingMode, ~convertINTToDOUBLE(currentRoundingMode, ~bvmul32(main_~r~0#1, main_~r~0#1)), main_~a~0#1), ~convertINTToDOUBLE(currentRoundingMode, main_~r~0#1)), ~fp.mul~DOUBLE(currentRoundingMode, ~convertINTToDOUBLE(currentRoundingMode, 2bv32), main_~x~0#1))) then 1bv32 else 0bv32)); {22#false} is VALID [2022-02-20 17:26:32,190 INFO L290 TraceCheckUtils]: 6: Hoare triple {22#false} ~cond := #in~cond; {22#false} is VALID [2022-02-20 17:26:32,190 INFO L290 TraceCheckUtils]: 7: Hoare triple {22#false} assume 0bv32 == ~cond; {22#false} is VALID [2022-02-20 17:26:32,190 INFO L290 TraceCheckUtils]: 8: Hoare triple {22#false} assume !false; {22#false} is VALID [2022-02-20 17:26:32,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 17:26:32,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 17:26:32,192 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 17:26:32,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208575035] [2022-02-20 17:26:32,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208575035] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:26:32,193 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:26:32,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 17:26:32,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010380307] [2022-02-20 17:26:32,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:26:32,198 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-02-20 17:26:32,198 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:26:32,200 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:32,468 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:26:32,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 17:26:32,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 17:26:32,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 17:26:32,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 17:26:32,485 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:41,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:26:41,335 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2022-02-20 17:26:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 17:26:41,336 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-02-20 17:26:41,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:26:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2022-02-20 17:26:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:41,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2022-02-20 17:26:41,343 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 44 transitions. [2022-02-20 17:26:43,373 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:26:43,379 INFO L225 Difference]: With dead ends: 33 [2022-02-20 17:26:43,379 INFO L226 Difference]: Without dead ends: 14 [2022-02-20 17:26:43,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 17:26:43,383 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 17:26:43,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 17:26:43,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-20 17:26:43,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-20 17:26:43,400 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:26:43,400 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:43,401 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:43,401 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:43,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:26:43,406 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-02-20 17:26:43,406 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-02-20 17:26:43,407 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:26:43,407 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:26:43,407 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 17:26:43,408 INFO L87 Difference]: Start difference. First operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 17:26:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:26:43,410 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-02-20 17:26:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-02-20 17:26:43,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:26:43,411 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:26:43,411 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:26:43,411 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:26:43,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-02-20 17:26:43,413 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2022-02-20 17:26:43,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:26:43,413 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-02-20 17:26:43,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:43,414 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-02-20 17:26:43,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:26:43,414 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:26:43,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:26:43,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-02-20 17:26:43,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 17:26:43,621 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:26:43,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:26:43,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2022-02-20 17:26:43,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 17:26:43,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702194410] [2022-02-20 17:26:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:26:43,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 17:26:43,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 17:26:43,624 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 17:26:43,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-02-20 17:26:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:26:44,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-20 17:26:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-02-20 17:26:46,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 17:26:59,153 WARN L228 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)