./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/bitvector/soft_float_4-3a.c.cil.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa5701cbf2aecb18d72b6e5744b88307065d31ab ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/bitvector/soft_float_4-3a.c.cil.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa5701cbf2aecb18d72b6e5744b88307065d31ab .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 15:39:01,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 15:39:01,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 15:39:01,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 15:39:01,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 15:39:01,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 15:39:01,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 15:39:01,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 15:39:01,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 15:39:01,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 15:39:01,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 15:39:01,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 15:39:01,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 15:39:01,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 15:39:01,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 15:39:01,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 15:39:01,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 15:39:01,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 15:39:01,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 15:39:01,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 15:39:01,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 15:39:01,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 15:39:01,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 15:39:01,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 15:39:01,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 15:39:01,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 15:39:01,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 15:39:01,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 15:39:01,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 15:39:01,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 15:39:01,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 15:39:01,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 15:39:01,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 15:39:01,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 15:39:01,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 15:39:01,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 15:39:01,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 15:39:01,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 15:39:01,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 15:39:01,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 15:39:01,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 15:39:01,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 15:39:01,755 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 15:39:01,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 15:39:01,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 15:39:01,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 15:39:01,760 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 15:39:01,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 15:39:01,760 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 15:39:01,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 15:39:01,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 15:39:01,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 15:39:01,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 15:39:01,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 15:39:01,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 15:39:01,762 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 15:39:01,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 15:39:01,763 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 15:39:01,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 15:39:01,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 15:39:01,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 15:39:01,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 15:39:01,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 15:39:01,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 15:39:01,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 15:39:01,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 15:39:01,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 15:39:01,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 15:39:01,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 15:39:01,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 15:39:01,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 15:39:01,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> fa5701cbf2aecb18d72b6e5744b88307065d31ab [2019-11-28 15:39:02,103 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 15:39:02,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 15:39:02,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 15:39:02,126 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 15:39:02,128 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 15:39:02,129 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-28 15:39:02,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e506c1926/dc4539afae50432faca4fb790c235102/FLAG3d20a7a2b [2019-11-28 15:39:02,692 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 15:39:02,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-28 15:39:02,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e506c1926/dc4539afae50432faca4fb790c235102/FLAG3d20a7a2b [2019-11-28 15:39:03,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e506c1926/dc4539afae50432faca4fb790c235102 [2019-11-28 15:39:03,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 15:39:03,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 15:39:03,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 15:39:03,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 15:39:03,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 15:39:03,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:39:03" (1/1) ... [2019-11-28 15:39:03,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454e1e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:03, skipping insertion in model container [2019-11-28 15:39:03,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:39:03" (1/1) ... [2019-11-28 15:39:03,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 15:39:03,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 15:39:03,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:39:03,393 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 15:39:03,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:39:03,520 INFO L208 MainTranslator]: Completed translation [2019-11-28 15:39:03,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:03 WrapperNode [2019-11-28 15:39:03,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 15:39:03,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 15:39:03,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 15:39:03,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 15:39:03,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:03" (1/1) ... [2019-11-28 15:39:03,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:03" (1/1) ... [2019-11-28 15:39:03,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 15:39:03,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 15:39:03,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 15:39:03,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 15:39:03,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:03" (1/1) ... [2019-11-28 15:39:03,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:03" (1/1) ... [2019-11-28 15:39:03,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:03" (1/1) ... [2019-11-28 15:39:03,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:03" (1/1) ... [2019-11-28 15:39:03,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:03" (1/1) ... [2019-11-28 15:39:03,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:03" (1/1) ... [2019-11-28 15:39:03,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:03" (1/1) ... [2019-11-28 15:39:03,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 15:39:03,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 15:39:03,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 15:39:03,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 15:39:03,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 15:39:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 15:39:03,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 15:39:04,170 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 15:39:04,171 INFO L287 CfgBuilder]: Removed 34 assume(true) statements. [2019-11-28 15:39:04,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:39:04 BoogieIcfgContainer [2019-11-28 15:39:04,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 15:39:04,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 15:39:04,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 15:39:04,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 15:39:04,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:39:03" (1/3) ... [2019-11-28 15:39:04,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c61caaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:39:04, skipping insertion in model container [2019-11-28 15:39:04,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:03" (2/3) ... [2019-11-28 15:39:04,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c61caaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:39:04, skipping insertion in model container [2019-11-28 15:39:04,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:39:04" (3/3) ... [2019-11-28 15:39:04,184 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-11-28 15:39:04,194 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 15:39:04,202 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-28 15:39:04,214 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-28 15:39:04,238 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 15:39:04,239 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 15:39:04,239 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 15:39:04,239 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 15:39:04,239 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 15:39:04,239 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 15:39:04,240 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 15:39:04,240 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 15:39:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-11-28 15:39:04,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 15:39:04,262 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:04,263 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:04,264 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:04,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:04,269 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-11-28 15:39:04,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:39:04,278 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829221335] [2019-11-28 15:39:04,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:39:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:39:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:04,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829221335] [2019-11-28 15:39:04,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:39:04,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-28 15:39:04,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152805234] [2019-11-28 15:39:04,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 15:39:04,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:39:04,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 15:39:04,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-28 15:39:04,685 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 8 states. [2019-11-28 15:39:05,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:39:05,266 INFO L93 Difference]: Finished difference Result 269 states and 396 transitions. [2019-11-28 15:39:05,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-28 15:39:05,268 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-28 15:39:05,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:39:05,282 INFO L225 Difference]: With dead ends: 269 [2019-11-28 15:39:05,282 INFO L226 Difference]: Without dead ends: 170 [2019-11-28 15:39:05,286 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2019-11-28 15:39:05,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-11-28 15:39:05,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 110. [2019-11-28 15:39:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-28 15:39:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 147 transitions. [2019-11-28 15:39:05,335 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 147 transitions. Word has length 14 [2019-11-28 15:39:05,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:39:05,336 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 147 transitions. [2019-11-28 15:39:05,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 15:39:05,336 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 147 transitions. [2019-11-28 15:39:05,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 15:39:05,337 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:05,337 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:05,338 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:05,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:05,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1417488386, now seen corresponding path program 1 times [2019-11-28 15:39:05,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:39:05,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744125893] [2019-11-28 15:39:05,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:39:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:39:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:05,564 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744125893] [2019-11-28 15:39:05,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:39:05,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-28 15:39:05,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621280028] [2019-11-28 15:39:05,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 15:39:05,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:39:05,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 15:39:05,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-28 15:39:05,569 INFO L87 Difference]: Start difference. First operand 110 states and 147 transitions. Second operand 8 states. [2019-11-28 15:39:05,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:39:05,876 INFO L93 Difference]: Finished difference Result 183 states and 226 transitions. [2019-11-28 15:39:05,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-28 15:39:05,876 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-11-28 15:39:05,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:39:05,878 INFO L225 Difference]: With dead ends: 183 [2019-11-28 15:39:05,878 INFO L226 Difference]: Without dead ends: 154 [2019-11-28 15:39:05,880 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-28 15:39:05,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-28 15:39:05,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 99. [2019-11-28 15:39:05,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-28 15:39:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2019-11-28 15:39:05,904 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 18 [2019-11-28 15:39:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:39:05,905 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2019-11-28 15:39:05,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 15:39:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2019-11-28 15:39:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 15:39:05,908 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:05,908 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:05,909 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:05,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:05,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-11-28 15:39:05,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:39:05,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696161198] [2019-11-28 15:39:05,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:39:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:39:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:06,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696161198] [2019-11-28 15:39:06,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:39:06,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-11-28 15:39:06,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80896716] [2019-11-28 15:39:06,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-28 15:39:06,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:39:06,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-28 15:39:06,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-11-28 15:39:06,245 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand 15 states. [2019-11-28 15:39:07,123 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2019-11-28 15:39:07,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:39:07,622 INFO L93 Difference]: Finished difference Result 225 states and 274 transitions. [2019-11-28 15:39:07,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-28 15:39:07,623 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2019-11-28 15:39:07,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:39:07,624 INFO L225 Difference]: With dead ends: 225 [2019-11-28 15:39:07,625 INFO L226 Difference]: Without dead ends: 221 [2019-11-28 15:39:07,626 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2019-11-28 15:39:07,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2019-11-28 15:39:07,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 107. [2019-11-28 15:39:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-28 15:39:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 137 transitions. [2019-11-28 15:39:07,640 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 137 transitions. Word has length 22 [2019-11-28 15:39:07,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:39:07,640 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 137 transitions. [2019-11-28 15:39:07,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-28 15:39:07,641 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 137 transitions. [2019-11-28 15:39:07,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 15:39:07,642 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:07,642 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:07,642 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:07,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:07,643 INFO L82 PathProgramCache]: Analyzing trace with hash 743535808, now seen corresponding path program 1 times [2019-11-28 15:39:07,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:39:07,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467006537] [2019-11-28 15:39:07,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:39:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:39:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:07,829 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467006537] [2019-11-28 15:39:07,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:39:07,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-28 15:39:07,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662298533] [2019-11-28 15:39:07,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 15:39:07,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:39:07,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 15:39:07,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-28 15:39:07,831 INFO L87 Difference]: Start difference. First operand 107 states and 137 transitions. Second operand 8 states. [2019-11-28 15:39:08,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:39:08,019 INFO L93 Difference]: Finished difference Result 171 states and 213 transitions. [2019-11-28 15:39:08,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 15:39:08,022 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-11-28 15:39:08,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:39:08,023 INFO L225 Difference]: With dead ends: 171 [2019-11-28 15:39:08,023 INFO L226 Difference]: Without dead ends: 146 [2019-11-28 15:39:08,024 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-28 15:39:08,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-11-28 15:39:08,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 110. [2019-11-28 15:39:08,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-28 15:39:08,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2019-11-28 15:39:08,034 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 22 [2019-11-28 15:39:08,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:39:08,035 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2019-11-28 15:39:08,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 15:39:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2019-11-28 15:39:08,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 15:39:08,036 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:08,036 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:08,037 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:08,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:08,037 INFO L82 PathProgramCache]: Analyzing trace with hash 743595390, now seen corresponding path program 1 times [2019-11-28 15:39:08,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:39:08,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942967180] [2019-11-28 15:39:08,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:39:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:39:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:08,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942967180] [2019-11-28 15:39:08,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:39:08,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-28 15:39:08,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249578364] [2019-11-28 15:39:08,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 15:39:08,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 15:39:08,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 15:39:08,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-28 15:39:08,181 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. Second operand 8 states. [2019-11-28 15:39:08,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:39:08,380 INFO L93 Difference]: Finished difference Result 157 states and 195 transitions. [2019-11-28 15:39:08,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 15:39:08,380 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-11-28 15:39:08,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:39:08,381 INFO L225 Difference]: With dead ends: 157 [2019-11-28 15:39:08,382 INFO L226 Difference]: Without dead ends: 132 [2019-11-28 15:39:08,382 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-11-28 15:39:08,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-11-28 15:39:08,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 110. [2019-11-28 15:39:08,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-28 15:39:08,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2019-11-28 15:39:08,392 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 22 [2019-11-28 15:39:08,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:39:08,393 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2019-11-28 15:39:08,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 15:39:08,393 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2019-11-28 15:39:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 15:39:08,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:08,395 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:08,395 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:08,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:08,395 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-11-28 15:39:08,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 15:39:08,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405200265] [2019-11-28 15:39:08,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 15:39:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:39:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:39:08,521 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 15:39:08,521 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 15:39:08,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:39:08 BoogieIcfgContainer [2019-11-28 15:39:08,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 15:39:08,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 15:39:08,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 15:39:08,571 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 15:39:08,572 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:39:04" (3/4) ... [2019-11-28 15:39:08,577 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 15:39:08,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 15:39:08,581 INFO L168 Benchmark]: Toolchain (without parser) took 5472.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.7 MB). Free memory was 955.0 MB in the beginning and 1.0 GB in the end (delta: -63.4 MB). Peak memory consumption was 145.3 MB. Max. memory is 11.5 GB. [2019-11-28 15:39:08,583 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 15:39:08,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -176.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-28 15:39:08,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 15:39:08,591 INFO L168 Benchmark]: Boogie Preprocessor took 37.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 15:39:08,592 INFO L168 Benchmark]: RCFGBuilder took 564.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. [2019-11-28 15:39:08,593 INFO L168 Benchmark]: TraceAbstraction took 4397.20 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.5 MB). Peak memory consumption was 141.6 MB. Max. memory is 11.5 GB. [2019-11-28 15:39:08,594 INFO L168 Benchmark]: Witness Printer took 6.52 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 15:39:08,607 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 413.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -176.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 564.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4397.20 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.5 MB). Peak memory consumption was 141.6 MB. Max. memory is 11.5 GB. * Witness Printer took 6.52 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L232] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] b = base2flt(mb, eb) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 7 error locations. Result: UNSAFE, OverallTime: 4.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 443 SDtfs, 1134 SDslu, 3048 SDs, 0 SdLazy, 822 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 287 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 8117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-11-28 15:39:10,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 15:39:10,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 15:39:10,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 15:39:10,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 15:39:10,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 15:39:10,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 15:39:10,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 15:39:10,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 15:39:10,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 15:39:10,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 15:39:10,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 15:39:10,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 15:39:10,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 15:39:10,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 15:39:10,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 15:39:10,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 15:39:10,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 15:39:10,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 15:39:10,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 15:39:10,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 15:39:10,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 15:39:10,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 15:39:10,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 15:39:10,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 15:39:10,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 15:39:10,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 15:39:10,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 15:39:10,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 15:39:10,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 15:39:10,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 15:39:10,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 15:39:10,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 15:39:10,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 15:39:10,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 15:39:10,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 15:39:10,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 15:39:10,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 15:39:10,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 15:39:10,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 15:39:10,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 15:39:10,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 15:39:10,649 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 15:39:10,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 15:39:10,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 15:39:10,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 15:39:10,650 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 15:39:10,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 15:39:10,654 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 15:39:10,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 15:39:10,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 15:39:10,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 15:39:10,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 15:39:10,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 15:39:10,655 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 15:39:10,656 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 15:39:10,656 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 15:39:10,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 15:39:10,656 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 15:39:10,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 15:39:10,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 15:39:10,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 15:39:10,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 15:39:10,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 15:39:10,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 15:39:10,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 15:39:10,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 15:39:10,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 15:39:10,661 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 15:39:10,662 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 15:39:10,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 15:39:10,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 15:39:10,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 15:39:10,662 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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(__VERIFIER_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 -> fa5701cbf2aecb18d72b6e5744b88307065d31ab [2019-11-28 15:39:10,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 15:39:10,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 15:39:11,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 15:39:11,001 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 15:39:11,003 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 15:39:11,003 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-28 15:39:11,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ef53e74c/423e1cd5760f47efa89ae99225ee253f/FLAGad1470ce7 [2019-11-28 15:39:11,588 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 15:39:11,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-11-28 15:39:11,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ef53e74c/423e1cd5760f47efa89ae99225ee253f/FLAGad1470ce7 [2019-11-28 15:39:11,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ef53e74c/423e1cd5760f47efa89ae99225ee253f [2019-11-28 15:39:11,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 15:39:11,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 15:39:11,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 15:39:11,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 15:39:11,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 15:39:11,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:39:11" (1/1) ... [2019-11-28 15:39:11,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f1a05dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:11, skipping insertion in model container [2019-11-28 15:39:11,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:39:11" (1/1) ... [2019-11-28 15:39:11,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 15:39:11,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 15:39:12,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:39:12,201 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 15:39:12,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 15:39:12,330 INFO L208 MainTranslator]: Completed translation [2019-11-28 15:39:12,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:12 WrapperNode [2019-11-28 15:39:12,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 15:39:12,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 15:39:12,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 15:39:12,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 15:39:12,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:12" (1/1) ... [2019-11-28 15:39:12,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:12" (1/1) ... [2019-11-28 15:39:12,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 15:39:12,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 15:39:12,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 15:39:12,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 15:39:12,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:12" (1/1) ... [2019-11-28 15:39:12,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:12" (1/1) ... [2019-11-28 15:39:12,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:12" (1/1) ... [2019-11-28 15:39:12,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:12" (1/1) ... [2019-11-28 15:39:12,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:12" (1/1) ... [2019-11-28 15:39:12,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:12" (1/1) ... [2019-11-28 15:39:12,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:12" (1/1) ... [2019-11-28 15:39:12,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 15:39:12,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 15:39:12,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 15:39:12,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 15:39:12,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 15:39:12,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 15:39:12,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 15:39:12,990 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 15:39:12,990 INFO L287 CfgBuilder]: Removed 34 assume(true) statements. [2019-11-28 15:39:12,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:39:12 BoogieIcfgContainer [2019-11-28 15:39:12,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 15:39:12,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 15:39:12,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 15:39:12,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 15:39:12,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:39:11" (1/3) ... [2019-11-28 15:39:12,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd11c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:39:12, skipping insertion in model container [2019-11-28 15:39:12,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:12" (2/3) ... [2019-11-28 15:39:12,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd11c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:39:12, skipping insertion in model container [2019-11-28 15:39:12,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:39:12" (3/3) ... [2019-11-28 15:39:13,001 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-11-28 15:39:13,012 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 15:39:13,019 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-28 15:39:13,032 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-28 15:39:13,068 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 15:39:13,068 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 15:39:13,068 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 15:39:13,069 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 15:39:13,069 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 15:39:13,069 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 15:39:13,070 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 15:39:13,070 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 15:39:13,088 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-11-28 15:39:13,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 15:39:13,094 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:13,095 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:13,095 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:13,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:13,101 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-11-28 15:39:13,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 15:39:13,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489438827] [2019-11-28 15:39:13,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-28 15:39:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:39:13,198 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 15:39:13,204 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 15:39:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:13,275 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 15:39:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:13,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489438827] [2019-11-28 15:39:13,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:39:13,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-28 15:39:13,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113077935] [2019-11-28 15:39:13,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 15:39:13,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 15:39:13,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 15:39:13,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 15:39:13,350 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 5 states. [2019-11-28 15:39:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:39:13,590 INFO L93 Difference]: Finished difference Result 230 states and 332 transitions. [2019-11-28 15:39:13,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 15:39:13,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-28 15:39:13,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:39:13,614 INFO L225 Difference]: With dead ends: 230 [2019-11-28 15:39:13,614 INFO L226 Difference]: Without dead ends: 138 [2019-11-28 15:39:13,619 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 15:39:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-11-28 15:39:13,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2019-11-28 15:39:13,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-11-28 15:39:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 114 transitions. [2019-11-28 15:39:13,704 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 114 transitions. Word has length 14 [2019-11-28 15:39:13,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:39:13,705 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 114 transitions. [2019-11-28 15:39:13,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 15:39:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 114 transitions. [2019-11-28 15:39:13,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 15:39:13,709 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:13,710 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:13,921 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 15:39:13,922 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:13,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:13,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1540311893, now seen corresponding path program 1 times [2019-11-28 15:39:13,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 15:39:13,925 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42718258] [2019-11-28 15:39:13,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-28 15:39:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:39:14,001 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 15:39:14,005 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 15:39:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:14,039 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 15:39:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:14,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42718258] [2019-11-28 15:39:14,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:39:14,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-28 15:39:14,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720716515] [2019-11-28 15:39:14,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 15:39:14,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 15:39:14,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 15:39:14,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 15:39:14,064 INFO L87 Difference]: Start difference. First operand 85 states and 114 transitions. Second operand 6 states. [2019-11-28 15:39:14,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:39:14,337 INFO L93 Difference]: Finished difference Result 225 states and 284 transitions. [2019-11-28 15:39:14,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 15:39:14,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-11-28 15:39:14,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:39:14,340 INFO L225 Difference]: With dead ends: 225 [2019-11-28 15:39:14,341 INFO L226 Difference]: Without dead ends: 199 [2019-11-28 15:39:14,343 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-11-28 15:39:14,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2019-11-28 15:39:14,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 118. [2019-11-28 15:39:14,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-11-28 15:39:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 161 transitions. [2019-11-28 15:39:14,383 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 161 transitions. Word has length 18 [2019-11-28 15:39:14,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:39:14,384 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 161 transitions. [2019-11-28 15:39:14,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 15:39:14,385 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 161 transitions. [2019-11-28 15:39:14,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 15:39:14,387 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:14,387 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:14,605 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 15:39:14,605 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:14,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:14,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1417428804, now seen corresponding path program 1 times [2019-11-28 15:39:14,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 15:39:14,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303712111] [2019-11-28 15:39:14,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-28 15:39:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:39:14,660 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 15:39:14,662 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 15:39:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:14,711 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 15:39:14,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:14,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303712111] [2019-11-28 15:39:14,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:39:14,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-28 15:39:14,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617441060] [2019-11-28 15:39:14,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 15:39:14,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 15:39:14,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 15:39:14,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 15:39:14,731 INFO L87 Difference]: Start difference. First operand 118 states and 161 transitions. Second operand 7 states. [2019-11-28 15:39:15,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:39:15,071 INFO L93 Difference]: Finished difference Result 213 states and 265 transitions. [2019-11-28 15:39:15,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 15:39:15,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-11-28 15:39:15,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:39:15,076 INFO L225 Difference]: With dead ends: 213 [2019-11-28 15:39:15,076 INFO L226 Difference]: Without dead ends: 184 [2019-11-28 15:39:15,078 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-11-28 15:39:15,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-11-28 15:39:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 107. [2019-11-28 15:39:15,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-28 15:39:15,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 143 transitions. [2019-11-28 15:39:15,101 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 143 transitions. Word has length 18 [2019-11-28 15:39:15,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:39:15,101 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 143 transitions. [2019-11-28 15:39:15,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 15:39:15,102 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 143 transitions. [2019-11-28 15:39:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 15:39:15,103 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:15,104 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:15,317 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 15:39:15,317 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:15,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:15,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-11-28 15:39:15,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 15:39:15,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240321270] [2019-11-28 15:39:15,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-28 15:39:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:39:15,367 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 15:39:15,369 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 15:39:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:15,445 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 15:39:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:15,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240321270] [2019-11-28 15:39:15,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:39:15,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2019-11-28 15:39:15,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292138820] [2019-11-28 15:39:15,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 15:39:15,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 15:39:15,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 15:39:15,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-28 15:39:15,474 INFO L87 Difference]: Start difference. First operand 107 states and 143 transitions. Second operand 9 states. [2019-11-28 15:39:15,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:39:15,834 INFO L93 Difference]: Finished difference Result 182 states and 229 transitions. [2019-11-28 15:39:15,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 15:39:15,835 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2019-11-28 15:39:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:39:15,839 INFO L225 Difference]: With dead ends: 182 [2019-11-28 15:39:15,840 INFO L226 Difference]: Without dead ends: 178 [2019-11-28 15:39:15,840 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2019-11-28 15:39:15,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-11-28 15:39:15,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 124. [2019-11-28 15:39:15,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-11-28 15:39:15,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2019-11-28 15:39:15,863 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 22 [2019-11-28 15:39:15,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:39:15,863 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2019-11-28 15:39:15,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 15:39:15,864 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2019-11-28 15:39:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 15:39:15,866 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:15,866 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:16,078 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 15:39:16,078 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:16,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:16,079 INFO L82 PathProgramCache]: Analyzing trace with hash 743535808, now seen corresponding path program 1 times [2019-11-28 15:39:16,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 15:39:16,080 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602640813] [2019-11-28 15:39:16,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-28 15:39:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:39:16,127 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 15:39:16,129 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 15:39:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:16,181 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 15:39:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:16,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602640813] [2019-11-28 15:39:16,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:39:16,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-28 15:39:16,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735858747] [2019-11-28 15:39:16,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 15:39:16,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 15:39:16,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 15:39:16,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 15:39:16,189 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand 7 states. [2019-11-28 15:39:16,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:39:16,379 INFO L93 Difference]: Finished difference Result 181 states and 229 transitions. [2019-11-28 15:39:16,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 15:39:16,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2019-11-28 15:39:16,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:39:16,381 INFO L225 Difference]: With dead ends: 181 [2019-11-28 15:39:16,381 INFO L226 Difference]: Without dead ends: 148 [2019-11-28 15:39:16,382 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-28 15:39:16,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-28 15:39:16,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 118. [2019-11-28 15:39:16,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-11-28 15:39:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 155 transitions. [2019-11-28 15:39:16,392 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 155 transitions. Word has length 22 [2019-11-28 15:39:16,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:39:16,392 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 155 transitions. [2019-11-28 15:39:16,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 15:39:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 155 transitions. [2019-11-28 15:39:16,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-28 15:39:16,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:16,394 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:16,604 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-28 15:39:16,610 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:16,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:16,611 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-11-28 15:39:16,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 15:39:16,611 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737353864] [2019-11-28 15:39:16,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-28 15:39:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:39:16,656 INFO L264 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 15:39:16,657 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 15:39:16,671 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 15:39:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:16,683 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 15:39:16,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:16,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737353864] [2019-11-28 15:39:16,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:39:16,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-28 15:39:16,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511864486] [2019-11-28 15:39:16,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 15:39:16,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 15:39:16,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 15:39:16,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 15:39:16,716 INFO L87 Difference]: Start difference. First operand 118 states and 155 transitions. Second operand 6 states. [2019-11-28 15:39:16,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:39:16,955 INFO L93 Difference]: Finished difference Result 182 states and 237 transitions. [2019-11-28 15:39:16,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 15:39:16,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-28 15:39:16,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:39:16,962 INFO L225 Difference]: With dead ends: 182 [2019-11-28 15:39:16,962 INFO L226 Difference]: Without dead ends: 178 [2019-11-28 15:39:16,963 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-28 15:39:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-11-28 15:39:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 114. [2019-11-28 15:39:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-11-28 15:39:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 151 transitions. [2019-11-28 15:39:16,996 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 151 transitions. Word has length 22 [2019-11-28 15:39:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:39:16,997 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 151 transitions. [2019-11-28 15:39:16,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 15:39:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 151 transitions. [2019-11-28 15:39:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-28 15:39:16,998 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:16,998 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:17,217 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-28 15:39:17,218 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:17,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:17,218 INFO L82 PathProgramCache]: Analyzing trace with hash 131253304, now seen corresponding path program 1 times [2019-11-28 15:39:17,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 15:39:17,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863982295] [2019-11-28 15:39:17,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-28 15:39:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:39:17,256 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 15:39:17,258 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 15:39:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:17,320 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 15:39:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:17,342 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863982295] [2019-11-28 15:39:17,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:39:17,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2019-11-28 15:39:17,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518591078] [2019-11-28 15:39:17,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 15:39:17,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 15:39:17,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 15:39:17,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-28 15:39:17,344 INFO L87 Difference]: Start difference. First operand 114 states and 151 transitions. Second operand 9 states. [2019-11-28 15:39:17,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:39:17,710 INFO L93 Difference]: Finished difference Result 164 states and 203 transitions. [2019-11-28 15:39:17,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-28 15:39:17,711 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-11-28 15:39:17,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:39:17,713 INFO L225 Difference]: With dead ends: 164 [2019-11-28 15:39:17,713 INFO L226 Difference]: Without dead ends: 159 [2019-11-28 15:39:17,714 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2019-11-28 15:39:17,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-11-28 15:39:17,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 127. [2019-11-28 15:39:17,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-28 15:39:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 165 transitions. [2019-11-28 15:39:17,724 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 165 transitions. Word has length 24 [2019-11-28 15:39:17,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:39:17,724 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 165 transitions. [2019-11-28 15:39:17,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 15:39:17,725 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 165 transitions. [2019-11-28 15:39:17,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-28 15:39:17,726 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:17,726 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:17,936 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-28 15:39:17,937 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:17,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:17,937 INFO L82 PathProgramCache]: Analyzing trace with hash 133100346, now seen corresponding path program 1 times [2019-11-28 15:39:17,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 15:39:17,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761751688] [2019-11-28 15:39:17,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-28 15:39:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 15:39:17,981 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 15:39:17,982 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 15:39:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:18,002 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 15:39:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 15:39:18,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761751688] [2019-11-28 15:39:18,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 15:39:18,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2019-11-28 15:39:18,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340670839] [2019-11-28 15:39:18,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 15:39:18,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 15:39:18,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 15:39:18,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-28 15:39:18,017 INFO L87 Difference]: Start difference. First operand 127 states and 165 transitions. Second operand 6 states. [2019-11-28 15:39:18,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 15:39:18,139 INFO L93 Difference]: Finished difference Result 144 states and 185 transitions. [2019-11-28 15:39:18,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 15:39:18,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-28 15:39:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 15:39:18,142 INFO L225 Difference]: With dead ends: 144 [2019-11-28 15:39:18,142 INFO L226 Difference]: Without dead ends: 125 [2019-11-28 15:39:18,143 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-11-28 15:39:18,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-11-28 15:39:18,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 115. [2019-11-28 15:39:18,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-11-28 15:39:18,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 149 transitions. [2019-11-28 15:39:18,153 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 149 transitions. Word has length 24 [2019-11-28 15:39:18,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 15:39:18,154 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 149 transitions. [2019-11-28 15:39:18,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 15:39:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 149 transitions. [2019-11-28 15:39:18,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-28 15:39:18,156 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 15:39:18,156 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 15:39:18,369 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-28 15:39:18,370 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 15:39:18,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 15:39:18,371 INFO L82 PathProgramCache]: Analyzing trace with hash -553029582, now seen corresponding path program 1 times [2019-11-28 15:39:18,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 15:39:18,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763624609] [2019-11-28 15:39:18,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-11-28 15:39:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:39:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 15:39:18,489 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 15:39:18,489 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 15:39:18,694 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-11-28 15:39:18,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:39:18 BoogieIcfgContainer [2019-11-28 15:39:18,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 15:39:18,726 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 15:39:18,726 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 15:39:18,726 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 15:39:18,726 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:39:12" (3/4) ... [2019-11-28 15:39:18,728 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 15:39:18,801 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 15:39:18,801 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 15:39:18,806 INFO L168 Benchmark]: Toolchain (without parser) took 6895.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 203.9 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -105.6 MB). Peak memory consumption was 98.3 MB. Max. memory is 11.5 GB. [2019-11-28 15:39:18,810 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 15:39:18,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -164.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 15:39:18,811 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 15:39:18,812 INFO L168 Benchmark]: Boogie Preprocessor took 51.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 15:39:18,812 INFO L168 Benchmark]: RCFGBuilder took 540.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-11-28 15:39:18,815 INFO L168 Benchmark]: TraceAbstraction took 5732.16 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.6 MB). Peak memory consumption was 80.3 MB. Max. memory is 11.5 GB. [2019-11-28 15:39:18,816 INFO L168 Benchmark]: Witness Printer took 75.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. [2019-11-28 15:39:18,821 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 421.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -164.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 68.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 540.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5732.16 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.6 MB). Peak memory consumption was 80.3 MB. Max. memory is 11.5 GB. * Witness Printer took 75.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L232] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] b = base2flt(mb, eb) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND FALSE !(!(cond)) [L105] delta = ea - eb [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 7 error locations. Result: UNSAFE, OverallTime: 5.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 852 SDtfs, 1261 SDslu, 3672 SDs, 0 SdLazy, 632 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 364 GetRequests, 275 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 401 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 312 ConstructedInterpolants, 0 QuantifiedInterpolants, 11560 SizeOfPredicates, 49 NumberOfNonLiveVariables, 439 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...