./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.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_1-3a.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4f20531c98faa0af8884f2ddaf47888911b3a46 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 -Xmx15G -Xms4m -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_1-3a.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4f20531c98faa0af8884f2ddaf47888911b3a46 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-9a8b2e8 [2020-10-19 22:22:09,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:22:09,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:22:09,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:22:09,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:22:09,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:22:09,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:22:09,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:22:09,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:22:09,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:22:09,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:22:09,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:22:09,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:22:09,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:22:09,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:22:09,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:22:09,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:22:09,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:22:09,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:22:09,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:22:09,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:22:09,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:22:09,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:22:09,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:22:09,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:22:09,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:22:09,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:22:09,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:22:09,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:22:09,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:22:09,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:22:09,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:22:09,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:22:09,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:22:09,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:22:09,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:22:09,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:22:09,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:22:09,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:22:09,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:22:09,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:22:09,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:22:10,028 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:22:10,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:22:10,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:22:10,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:22:10,031 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:22:10,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:22:10,031 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:22:10,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:22:10,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:22:10,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:22:10,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:22:10,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:22:10,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:22:10,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:22:10,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:22:10,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:22:10,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:22:10,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:22:10,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:22:10,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:22:10,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:22:10,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:22:10,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:22:10,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:22:10,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:22:10,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:22:10,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:22:10,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:22:10,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:22:10,036 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(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-10-19 22:22:10,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:22:10,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:22:10,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:22:10,253 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:22:10,255 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:22:10,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-10-19 22:22:10,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d9552774/4ad65d190cf749438caaa6a1a58394fd/FLAG194431f3d [2020-10-19 22:22:10,862 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:22:10,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-10-19 22:22:10,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d9552774/4ad65d190cf749438caaa6a1a58394fd/FLAG194431f3d [2020-10-19 22:22:11,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d9552774/4ad65d190cf749438caaa6a1a58394fd [2020-10-19 22:22:11,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:22:11,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:22:11,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:11,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:22:11,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:22:11,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:11" (1/1) ... [2020-10-19 22:22:11,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38359e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:11, skipping insertion in model container [2020-10-19 22:22:11,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:11" (1/1) ... [2020-10-19 22:22:11,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:22:11,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:22:11,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:11,553 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:22:11,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:11,618 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:22:11,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:11 WrapperNode [2020-10-19 22:22:11,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:11,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:11,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:22:11,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:22:11,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:11" (1/1) ... [2020-10-19 22:22:11,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:11" (1/1) ... [2020-10-19 22:22:11,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:11,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:22:11,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:22:11,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:22:11,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:11" (1/1) ... [2020-10-19 22:22:11,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:11" (1/1) ... [2020-10-19 22:22:11,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:11" (1/1) ... [2020-10-19 22:22:11,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:11" (1/1) ... [2020-10-19 22:22:11,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:11" (1/1) ... [2020-10-19 22:22:11,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:11" (1/1) ... [2020-10-19 22:22:11,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:11" (1/1) ... [2020-10-19 22:22:11,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:22:11,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:22:11,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:22:11,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:22:11,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:11" (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 [2020-10-19 22:22:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:22:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:22:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:22:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:22:12,308 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:22:12,308 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-10-19 22:22:12,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:12 BoogieIcfgContainer [2020-10-19 22:22:12,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:22:12,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:22:12,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:22:12,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:22:12,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:22:11" (1/3) ... [2020-10-19 22:22:12,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74bce3ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:12, skipping insertion in model container [2020-10-19 22:22:12,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:11" (2/3) ... [2020-10-19 22:22:12,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74bce3ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:12, skipping insertion in model container [2020-10-19 22:22:12,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:12" (3/3) ... [2020-10-19 22:22:12,318 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-10-19 22:22:12,328 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:22:12,335 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-19 22:22:12,348 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-19 22:22:12,373 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:22:12,374 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:22:12,374 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:22:12,374 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:22:12,376 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:22:12,376 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:22:12,377 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:22:12,377 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:22:12,393 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-10-19 22:22:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:22:12,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:12,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:12,399 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:12,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2020-10-19 22:22:12,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:12,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807050429] [2020-10-19 22:22:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:12,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807050429] [2020-10-19 22:22:12,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:12,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 22:22:12,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415379358] [2020-10-19 22:22:12,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:12,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:12,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:12,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:12,752 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 7 states. [2020-10-19 22:22:13,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:13,180 INFO L93 Difference]: Finished difference Result 464 states and 698 transitions. [2020-10-19 22:22:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 22:22:13,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-19 22:22:13,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:13,204 INFO L225 Difference]: With dead ends: 464 [2020-10-19 22:22:13,204 INFO L226 Difference]: Without dead ends: 348 [2020-10-19 22:22:13,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-19 22:22:13,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-19 22:22:13,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 142. [2020-10-19 22:22:13,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-19 22:22:13,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 206 transitions. [2020-10-19 22:22:13,273 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 206 transitions. Word has length 18 [2020-10-19 22:22:13,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:13,274 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 206 transitions. [2020-10-19 22:22:13,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:13,274 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 206 transitions. [2020-10-19 22:22:13,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:22:13,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:13,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:13,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:22:13,277 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:13,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:13,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1626703378, now seen corresponding path program 1 times [2020-10-19 22:22:13,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:13,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189504753] [2020-10-19 22:22:13,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:13,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189504753] [2020-10-19 22:22:13,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:13,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 22:22:13,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251785281] [2020-10-19 22:22:13,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:13,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:13,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:13,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:13,438 INFO L87 Difference]: Start difference. First operand 142 states and 206 transitions. Second operand 6 states. [2020-10-19 22:22:13,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:13,598 INFO L93 Difference]: Finished difference Result 299 states and 427 transitions. [2020-10-19 22:22:13,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:13,598 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-19 22:22:13,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:13,601 INFO L225 Difference]: With dead ends: 299 [2020-10-19 22:22:13,601 INFO L226 Difference]: Without dead ends: 215 [2020-10-19 22:22:13,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:13,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-19 22:22:13,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 202. [2020-10-19 22:22:13,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-19 22:22:13,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 289 transitions. [2020-10-19 22:22:13,621 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 289 transitions. Word has length 18 [2020-10-19 22:22:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:13,622 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 289 transitions. [2020-10-19 22:22:13,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 289 transitions. [2020-10-19 22:22:13,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:22:13,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:13,624 INFO L422 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] [2020-10-19 22:22:13,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:22:13,625 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:13,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:13,625 INFO L82 PathProgramCache]: Analyzing trace with hash 442130173, now seen corresponding path program 1 times [2020-10-19 22:22:13,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:13,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812901341] [2020-10-19 22:22:13,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:13,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812901341] [2020-10-19 22:22:13,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:13,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 22:22:13,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141820281] [2020-10-19 22:22:13,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:13,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:13,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:13,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:13,792 INFO L87 Difference]: Start difference. First operand 202 states and 289 transitions. Second operand 7 states. [2020-10-19 22:22:14,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:14,090 INFO L93 Difference]: Finished difference Result 347 states and 465 transitions. [2020-10-19 22:22:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 22:22:14,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-19 22:22:14,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:14,092 INFO L225 Difference]: With dead ends: 347 [2020-10-19 22:22:14,092 INFO L226 Difference]: Without dead ends: 299 [2020-10-19 22:22:14,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-19 22:22:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-19 22:22:14,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 191. [2020-10-19 22:22:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-19 22:22:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 271 transitions. [2020-10-19 22:22:14,115 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 271 transitions. Word has length 22 [2020-10-19 22:22:14,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:14,115 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 271 transitions. [2020-10-19 22:22:14,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 271 transitions. [2020-10-19 22:22:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 22:22:14,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:14,118 INFO L422 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, 1, 1] [2020-10-19 22:22:14,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:22:14,118 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:14,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:14,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1963023460, now seen corresponding path program 1 times [2020-10-19 22:22:14,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:14,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678401658] [2020-10-19 22:22:14,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:14,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678401658] [2020-10-19 22:22:14,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:14,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:22:14,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071732122] [2020-10-19 22:22:14,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:22:14,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:14,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:22:14,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:14,160 INFO L87 Difference]: Start difference. First operand 191 states and 271 transitions. Second operand 3 states. [2020-10-19 22:22:14,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:14,181 INFO L93 Difference]: Finished difference Result 345 states and 487 transitions. [2020-10-19 22:22:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:22:14,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-19 22:22:14,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:14,184 INFO L225 Difference]: With dead ends: 345 [2020-10-19 22:22:14,184 INFO L226 Difference]: Without dead ends: 270 [2020-10-19 22:22:14,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:14,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-19 22:22:14,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 241. [2020-10-19 22:22:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-19 22:22:14,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 336 transitions. [2020-10-19 22:22:14,200 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 336 transitions. Word has length 26 [2020-10-19 22:22:14,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:14,201 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 336 transitions. [2020-10-19 22:22:14,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:22:14,201 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 336 transitions. [2020-10-19 22:22:14,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 22:22:14,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:14,204 INFO L422 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, 1, 1] [2020-10-19 22:22:14,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:22:14,204 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:14,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:14,205 INFO L82 PathProgramCache]: Analyzing trace with hash -855546000, now seen corresponding path program 1 times [2020-10-19 22:22:14,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:14,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261532019] [2020-10-19 22:22:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:14,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261532019] [2020-10-19 22:22:14,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:14,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:22:14,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807370087] [2020-10-19 22:22:14,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:14,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:14,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:14,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:14,300 INFO L87 Difference]: Start difference. First operand 241 states and 336 transitions. Second operand 5 states. [2020-10-19 22:22:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:14,434 INFO L93 Difference]: Finished difference Result 608 states and 834 transitions. [2020-10-19 22:22:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:22:14,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-19 22:22:14,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:14,437 INFO L225 Difference]: With dead ends: 608 [2020-10-19 22:22:14,437 INFO L226 Difference]: Without dead ends: 443 [2020-10-19 22:22:14,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:14,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-19 22:22:14,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 298. [2020-10-19 22:22:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-19 22:22:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 413 transitions. [2020-10-19 22:22:14,454 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 413 transitions. Word has length 26 [2020-10-19 22:22:14,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:14,455 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 413 transitions. [2020-10-19 22:22:14,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:14,455 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 413 transitions. [2020-10-19 22:22:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:22:14,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:14,468 INFO L422 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, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:14,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:22:14,469 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:14,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:14,469 INFO L82 PathProgramCache]: Analyzing trace with hash 397693116, now seen corresponding path program 1 times [2020-10-19 22:22:14,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:14,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277123013] [2020-10-19 22:22:14,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:14,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277123013] [2020-10-19 22:22:14,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:14,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:22:14,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999899028] [2020-10-19 22:22:14,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:22:14,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:14,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:22:14,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:22:14,516 INFO L87 Difference]: Start difference. First operand 298 states and 413 transitions. Second operand 4 states. [2020-10-19 22:22:14,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:14,551 INFO L93 Difference]: Finished difference Result 429 states and 595 transitions. [2020-10-19 22:22:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:22:14,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-19 22:22:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:14,555 INFO L225 Difference]: With dead ends: 429 [2020-10-19 22:22:14,555 INFO L226 Difference]: Without dead ends: 354 [2020-10-19 22:22:14,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:14,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-19 22:22:14,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 312. [2020-10-19 22:22:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-10-19 22:22:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 423 transitions. [2020-10-19 22:22:14,570 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 423 transitions. Word has length 30 [2020-10-19 22:22:14,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:14,571 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 423 transitions. [2020-10-19 22:22:14,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:22:14,572 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 423 transitions. [2020-10-19 22:22:14,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:22:14,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:14,573 INFO L422 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, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:14,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:22:14,574 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:14,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:14,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2020-10-19 22:22:14,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:14,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71995113] [2020-10-19 22:22:14,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:14,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71995113] [2020-10-19 22:22:14,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:14,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 22:22:14,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010527712] [2020-10-19 22:22:14,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:14,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:14,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:14,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:14,682 INFO L87 Difference]: Start difference. First operand 312 states and 423 transitions. Second operand 6 states. [2020-10-19 22:22:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:14,987 INFO L93 Difference]: Finished difference Result 813 states and 1106 transitions. [2020-10-19 22:22:14,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:22:14,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-19 22:22:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:14,992 INFO L225 Difference]: With dead ends: 813 [2020-10-19 22:22:14,992 INFO L226 Difference]: Without dead ends: 704 [2020-10-19 22:22:14,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-19 22:22:14,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-10-19 22:22:15,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 450. [2020-10-19 22:22:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-19 22:22:15,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 614 transitions. [2020-10-19 22:22:15,019 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 614 transitions. Word has length 30 [2020-10-19 22:22:15,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:15,019 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 614 transitions. [2020-10-19 22:22:15,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:15,020 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 614 transitions. [2020-10-19 22:22:15,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:22:15,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:15,021 INFO L422 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, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:15,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:22:15,022 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:15,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:15,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1878873742, now seen corresponding path program 1 times [2020-10-19 22:22:15,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:15,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463623230] [2020-10-19 22:22:15,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:22:15,063 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:22:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:22:15,122 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:22:15,150 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:22:15,150 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:22:15,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:22:15,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:22:15 BoogieIcfgContainer [2020-10-19 22:22:15,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:22:15,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:22:15,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:22:15,196 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:22:15,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:12" (3/4) ... [2020-10-19 22:22:15,200 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:22:15,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:22:15,203 INFO L168 Benchmark]: Toolchain (without parser) took 3937.85 ms. Allocated memory was 39.8 MB in the beginning and 61.3 MB in the end (delta: 21.5 MB). Free memory was 16.8 MB in the beginning and 33.8 MB in the end (delta: -16.9 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:15,207 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 30.9 MB. Free memory was 6.1 MB in the beginning and 6.1 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:22:15,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.55 ms. Allocated memory was 39.8 MB in the beginning and 40.9 MB in the end (delta: 1.0 MB). Free memory was 16.0 MB in the beginning and 12.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:15,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.53 ms. Allocated memory was 40.9 MB in the beginning and 41.4 MB in the end (delta: 524.3 kB). Free memory was 12.0 MB in the beginning and 23.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:15,211 INFO L168 Benchmark]: Boogie Preprocessor took 37.29 ms. Allocated memory is still 41.4 MB. Free memory was 23.9 MB in the beginning and 21.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:15,212 INFO L168 Benchmark]: RCFGBuilder took 591.23 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 21.8 MB in the beginning and 19.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:15,214 INFO L168 Benchmark]: TraceAbstraction took 2883.53 ms. Allocated memory was 43.5 MB in the beginning and 61.3 MB in the end (delta: 17.8 MB). Free memory was 18.8 MB in the beginning and 34.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:15,215 INFO L168 Benchmark]: Witness Printer took 5.23 ms. Allocated memory is still 61.3 MB. Free memory was 34.4 MB in the beginning and 33.8 MB in the end (delta: 656.5 kB). Peak memory consumption was 656.5 kB. Max. memory is 14.3 GB. [2020-10-19 22:22:15,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 30.9 MB. Free memory was 6.1 MB in the beginning and 6.1 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 348.55 ms. Allocated memory was 39.8 MB in the beginning and 40.9 MB in the end (delta: 1.0 MB). Free memory was 16.0 MB in the beginning and 12.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 61.53 ms. Allocated memory was 40.9 MB in the beginning and 41.4 MB in the end (delta: 524.3 kB). Free memory was 12.0 MB in the beginning and 23.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 37.29 ms. Allocated memory is still 41.4 MB. Free memory was 23.9 MB in the beginning and 21.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 591.23 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 21.8 MB in the beginning and 19.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2883.53 ms. Allocated memory was 43.5 MB in the beginning and 61.3 MB in the end (delta: 17.8 MB). Free memory was 18.8 MB in the beginning and 34.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.3 GB. * Witness Printer took 5.23 ms. Allocated memory is still 61.3 MB. Free memory was 34.4 MB in the beginning and 33.8 MB in the end (delta: 656.5 kB). Peak memory consumption was 656.5 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L244] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_1-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 102 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1043 SDtfs, 2629 SDslu, 3208 SDs, 0 SdLazy, 590 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=450occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 797 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 10347 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:22:17,259 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-19 22:22:17,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:22:17,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:22:17,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:22:17,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:22:17,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:22:17,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:22:17,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:22:17,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:22:17,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:22:17,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:22:17,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:22:17,341 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-19 22:22:17,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:22:17,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:22:17,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:22:17,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:22:17,393 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:22:17,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:22:17,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:22:17,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:22:17,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:22:17,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:22:17,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:22:17,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:22:17,395 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 22:22:17,395 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 22:22:17,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:22:17,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:22:17,397 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:22:17,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:22:17,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:22:17,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:22:17,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:22:17,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:22:17,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:22:17,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:22:17,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:22:17,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:22:17,400 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 22:22:17,401 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 22:22:17,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:22:17,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:22:17,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 22:22:17,403 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(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-10-19 22:22:17,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:22:17,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:22:17,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:22:17,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:22:17,614 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:22:17,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-10-19 22:22:17,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcce8a8ae/8023a399e6f247f48c5e0a81938dc8c5/FLAG188076f26 [2020-10-19 22:22:18,160 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:22:18,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-10-19 22:22:18,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcce8a8ae/8023a399e6f247f48c5e0a81938dc8c5/FLAG188076f26 [2020-10-19 22:22:18,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcce8a8ae/8023a399e6f247f48c5e0a81938dc8c5 [2020-10-19 22:22:18,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:22:18,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:22:18,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:18,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:22:18,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:22:18,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:18" (1/1) ... [2020-10-19 22:22:18,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66dc4a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:18, skipping insertion in model container [2020-10-19 22:22:18,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:18" (1/1) ... [2020-10-19 22:22:18,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:22:18,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:22:18,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:18,850 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:22:18,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:18,935 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:22:18,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:18 WrapperNode [2020-10-19 22:22:18,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:18,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:18,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:22:18,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:22:18,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:18" (1/1) ... [2020-10-19 22:22:18,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:18" (1/1) ... [2020-10-19 22:22:18,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:18,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:22:18,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:22:18,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:22:18,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:18" (1/1) ... [2020-10-19 22:22:18,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:18" (1/1) ... [2020-10-19 22:22:19,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:18" (1/1) ... [2020-10-19 22:22:19,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:18" (1/1) ... [2020-10-19 22:22:19,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:18" (1/1) ... [2020-10-19 22:22:19,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:18" (1/1) ... [2020-10-19 22:22:19,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:18" (1/1) ... [2020-10-19 22:22:19,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:22:19,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:22:19,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:22:19,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:22:19,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:18" (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 [2020-10-19 22:22:19,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 22:22:19,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:22:19,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:22:19,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:22:19,659 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:22:19,659 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-10-19 22:22:19,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:19 BoogieIcfgContainer [2020-10-19 22:22:19,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:22:19,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:22:19,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:22:19,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:22:19,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:22:18" (1/3) ... [2020-10-19 22:22:19,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d1566b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:19, skipping insertion in model container [2020-10-19 22:22:19,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:18" (2/3) ... [2020-10-19 22:22:19,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d1566b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:19, skipping insertion in model container [2020-10-19 22:22:19,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:19" (3/3) ... [2020-10-19 22:22:19,678 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-10-19 22:22:19,690 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:22:19,700 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-19 22:22:19,714 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-19 22:22:19,746 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:22:19,747 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:22:19,748 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:22:19,748 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:22:19,749 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:22:19,749 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:22:19,749 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:22:19,749 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:22:19,779 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-10-19 22:22:19,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:22:19,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:19,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:19,789 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:19,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:19,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2020-10-19 22:22:19,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:19,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600881373] [2020-10-19 22:22:19,812 INFO L95 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 [2020-10-19 22:22:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:19,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:22:19,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:19,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:20,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600881373] [2020-10-19 22:22:20,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:20,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 22:22:20,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454558929] [2020-10-19 22:22:20,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:20,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:20,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:20,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:20,040 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 5 states. [2020-10-19 22:22:20,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:20,289 INFO L93 Difference]: Finished difference Result 403 states and 613 transitions. [2020-10-19 22:22:20,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:22:20,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-19 22:22:20,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:20,307 INFO L225 Difference]: With dead ends: 403 [2020-10-19 22:22:20,308 INFO L226 Difference]: Without dead ends: 295 [2020-10-19 22:22:20,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:20,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-19 22:22:20,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 120. [2020-10-19 22:22:20,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-19 22:22:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2020-10-19 22:22:20,362 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 18 [2020-10-19 22:22:20,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:20,363 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2020-10-19 22:22:20,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:20,363 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2020-10-19 22:22:20,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:22:20,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:20,365 INFO L422 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] [2020-10-19 22:22:20,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 22:22:20,567 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:20,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:20,568 INFO L82 PathProgramCache]: Analyzing trace with hash -908455500, now seen corresponding path program 1 times [2020-10-19 22:22:20,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:20,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084556708] [2020-10-19 22:22:20,569 INFO L95 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 [2020-10-19 22:22:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:20,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:22:20,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:20,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:20,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084556708] [2020-10-19 22:22:20,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:20,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 22:22:20,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769638778] [2020-10-19 22:22:20,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:20,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:20,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:20,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:20,695 INFO L87 Difference]: Start difference. First operand 120 states and 172 transitions. Second operand 5 states. [2020-10-19 22:22:20,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:20,889 INFO L93 Difference]: Finished difference Result 394 states and 543 transitions. [2020-10-19 22:22:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:22:20,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-19 22:22:20,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:20,895 INFO L225 Difference]: With dead ends: 394 [2020-10-19 22:22:20,896 INFO L226 Difference]: Without dead ends: 337 [2020-10-19 22:22:20,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:20,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-19 22:22:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 186. [2020-10-19 22:22:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-19 22:22:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 269 transitions. [2020-10-19 22:22:20,924 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 269 transitions. Word has length 22 [2020-10-19 22:22:20,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:20,924 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 269 transitions. [2020-10-19 22:22:20,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:20,925 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 269 transitions. [2020-10-19 22:22:20,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:22:20,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:20,927 INFO L422 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] [2020-10-19 22:22:21,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 22:22:21,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:21,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:21,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1301482510, now seen corresponding path program 1 times [2020-10-19 22:22:21,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:21,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119796349] [2020-10-19 22:22:21,146 INFO L95 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 [2020-10-19 22:22:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:21,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:22:21,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:21,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:21,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:21,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:21,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119796349] [2020-10-19 22:22:21,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:21,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 22:22:21,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395616576] [2020-10-19 22:22:21,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:21,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:21,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:21,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:21,257 INFO L87 Difference]: Start difference. First operand 186 states and 269 transitions. Second operand 5 states. [2020-10-19 22:22:21,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:21,403 INFO L93 Difference]: Finished difference Result 378 states and 535 transitions. [2020-10-19 22:22:21,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:22:21,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-19 22:22:21,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:21,405 INFO L225 Difference]: With dead ends: 378 [2020-10-19 22:22:21,405 INFO L226 Difference]: Without dead ends: 295 [2020-10-19 22:22:21,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:21,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-19 22:22:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 278. [2020-10-19 22:22:21,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-19 22:22:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 401 transitions. [2020-10-19 22:22:21,429 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 401 transitions. Word has length 22 [2020-10-19 22:22:21,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:21,430 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 401 transitions. [2020-10-19 22:22:21,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 401 transitions. [2020-10-19 22:22:21,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:22:21,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:21,432 INFO L422 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] [2020-10-19 22:22:21,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 22:22:21,651 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:21,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:21,652 INFO L82 PathProgramCache]: Analyzing trace with hash 473524852, now seen corresponding path program 1 times [2020-10-19 22:22:21,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:21,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887021799] [2020-10-19 22:22:21,652 INFO L95 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 [2020-10-19 22:22:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:21,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:22:21,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:21,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:21,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887021799] [2020-10-19 22:22:21,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:21,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-10-19 22:22:21,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60669353] [2020-10-19 22:22:21,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:21,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:21,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:21,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:21,786 INFO L87 Difference]: Start difference. First operand 278 states and 401 transitions. Second operand 6 states. [2020-10-19 22:22:21,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:21,953 INFO L93 Difference]: Finished difference Result 395 states and 553 transitions. [2020-10-19 22:22:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:22:21,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-19 22:22:21,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:21,956 INFO L225 Difference]: With dead ends: 395 [2020-10-19 22:22:21,965 INFO L226 Difference]: Without dead ends: 318 [2020-10-19 22:22:21,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:21,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-19 22:22:21,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2020-10-19 22:22:21,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-19 22:22:21,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 365 transitions. [2020-10-19 22:22:21,986 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 365 transitions. Word has length 22 [2020-10-19 22:22:21,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:21,986 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 365 transitions. [2020-10-19 22:22:21,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 365 transitions. [2020-10-19 22:22:21,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 22:22:21,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:21,989 INFO L422 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, 1, 1] [2020-10-19 22:22:22,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 22:22:22,205 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:22,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:22,205 INFO L82 PathProgramCache]: Analyzing trace with hash 177561437, now seen corresponding path program 1 times [2020-10-19 22:22:22,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:22,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136503906] [2020-10-19 22:22:22,206 INFO L95 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 [2020-10-19 22:22:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:22,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:22:22,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:22,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:22,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:22,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136503906] [2020-10-19 22:22:22,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:22,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-10-19 22:22:22,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494452886] [2020-10-19 22:22:22,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:22,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:22,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:22,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:22,343 INFO L87 Difference]: Start difference. First operand 258 states and 365 transitions. Second operand 7 states. [2020-10-19 22:22:22,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:22,663 INFO L93 Difference]: Finished difference Result 402 states and 541 transitions. [2020-10-19 22:22:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 22:22:22,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-19 22:22:22,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:22,666 INFO L225 Difference]: With dead ends: 402 [2020-10-19 22:22:22,666 INFO L226 Difference]: Without dead ends: 354 [2020-10-19 22:22:22,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-19 22:22:22,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-19 22:22:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2020-10-19 22:22:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-19 22:22:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2020-10-19 22:22:22,681 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 26 [2020-10-19 22:22:22,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:22,681 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2020-10-19 22:22:22,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:22,682 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2020-10-19 22:22:22,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:22:22,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:22,684 INFO L422 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, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:22,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 22:22:22,901 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:22,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:22,901 INFO L82 PathProgramCache]: Analyzing trace with hash 397693116, now seen corresponding path program 1 times [2020-10-19 22:22:22,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:22,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467754681] [2020-10-19 22:22:22,902 INFO L95 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 [2020-10-19 22:22:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:22,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 22:22:22,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:22,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:22,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467754681] [2020-10-19 22:22:22,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:22,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-19 22:22:22,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358064230] [2020-10-19 22:22:22,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:22,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:22,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:22,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:22,999 INFO L87 Difference]: Start difference. First operand 248 states and 348 transitions. Second operand 6 states. [2020-10-19 22:22:23,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:23,105 INFO L93 Difference]: Finished difference Result 456 states and 635 transitions. [2020-10-19 22:22:23,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:23,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-19 22:22:23,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:23,108 INFO L225 Difference]: With dead ends: 456 [2020-10-19 22:22:23,108 INFO L226 Difference]: Without dead ends: 381 [2020-10-19 22:22:23,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:23,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-19 22:22:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 310. [2020-10-19 22:22:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-10-19 22:22:23,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 423 transitions. [2020-10-19 22:22:23,125 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 423 transitions. Word has length 30 [2020-10-19 22:22:23,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:23,126 INFO L481 AbstractCegarLoop]: Abstraction has 310 states and 423 transitions. [2020-10-19 22:22:23,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:23,126 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 423 transitions. [2020-10-19 22:22:23,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:22:23,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:23,127 INFO L422 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, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:23,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 22:22:23,347 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:23,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:23,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2020-10-19 22:22:23,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:23,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011029649] [2020-10-19 22:22:23,348 INFO L95 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 [2020-10-19 22:22:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:23,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 22:22:23,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:23,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:23,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011029649] [2020-10-19 22:22:23,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:23,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-10-19 22:22:23,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713335287] [2020-10-19 22:22:23,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 22:22:23,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:23,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 22:22:23,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:23,478 INFO L87 Difference]: Start difference. First operand 310 states and 423 transitions. Second operand 8 states. [2020-10-19 22:22:24,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:24,089 INFO L93 Difference]: Finished difference Result 912 states and 1264 transitions. [2020-10-19 22:22:24,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 22:22:24,090 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-19 22:22:24,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:24,096 INFO L225 Difference]: With dead ends: 912 [2020-10-19 22:22:24,097 INFO L226 Difference]: Without dead ends: 805 [2020-10-19 22:22:24,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-19 22:22:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-10-19 22:22:24,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 446. [2020-10-19 22:22:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-10-19 22:22:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 608 transitions. [2020-10-19 22:22:24,144 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 608 transitions. Word has length 30 [2020-10-19 22:22:24,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:24,145 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 608 transitions. [2020-10-19 22:22:24,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 22:22:24,146 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 608 transitions. [2020-10-19 22:22:24,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 22:22:24,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:24,148 INFO L422 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:24,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 22:22:24,371 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:24,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:24,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1434134121, now seen corresponding path program 1 times [2020-10-19 22:22:24,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:24,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479113244] [2020-10-19 22:22:24,372 INFO L95 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 [2020-10-19 22:22:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:24,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 22:22:24,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:24,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:24,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479113244] [2020-10-19 22:22:24,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:24,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2020-10-19 22:22:24,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89766683] [2020-10-19 22:22:24,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 22:22:24,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:24,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 22:22:24,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-19 22:22:24,611 INFO L87 Difference]: Start difference. First operand 446 states and 608 transitions. Second operand 13 states. [2020-10-19 22:22:25,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:25,648 INFO L93 Difference]: Finished difference Result 746 states and 1004 transitions. [2020-10-19 22:22:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-19 22:22:25,649 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-10-19 22:22:25,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:25,653 INFO L225 Difference]: With dead ends: 746 [2020-10-19 22:22:25,653 INFO L226 Difference]: Without dead ends: 705 [2020-10-19 22:22:25,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2020-10-19 22:22:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-10-19 22:22:25,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 444. [2020-10-19 22:22:25,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-10-19 22:22:25,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 606 transitions. [2020-10-19 22:22:25,686 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 606 transitions. Word has length 31 [2020-10-19 22:22:25,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:25,686 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 606 transitions. [2020-10-19 22:22:25,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 22:22:25,687 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 606 transitions. [2020-10-19 22:22:25,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 22:22:25,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:25,688 INFO L422 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:25,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 22:22:25,910 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:25,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:25,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1376875819, now seen corresponding path program 1 times [2020-10-19 22:22:25,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:25,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289625083] [2020-10-19 22:22:25,913 INFO L95 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 [2020-10-19 22:22:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:25,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:22:25,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:25,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:26,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289625083] [2020-10-19 22:22:26,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:26,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-19 22:22:26,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062526592] [2020-10-19 22:22:26,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:26,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:26,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:26,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:26,011 INFO L87 Difference]: Start difference. First operand 444 states and 606 transitions. Second operand 6 states. [2020-10-19 22:22:26,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:26,099 INFO L93 Difference]: Finished difference Result 501 states and 681 transitions. [2020-10-19 22:22:26,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:26,100 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-19 22:22:26,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:26,103 INFO L225 Difference]: With dead ends: 501 [2020-10-19 22:22:26,103 INFO L226 Difference]: Without dead ends: 496 [2020-10-19 22:22:26,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:26,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-10-19 22:22:26,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 444. [2020-10-19 22:22:26,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-10-19 22:22:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 601 transitions. [2020-10-19 22:22:26,130 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 601 transitions. Word has length 31 [2020-10-19 22:22:26,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:26,130 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 601 transitions. [2020-10-19 22:22:26,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 601 transitions. [2020-10-19 22:22:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 22:22:26,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:26,132 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:26,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-19 22:22:26,347 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:26,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:26,347 INFO L82 PathProgramCache]: Analyzing trace with hash 6505427, now seen corresponding path program 1 times [2020-10-19 22:22:26,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:26,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719327218] [2020-10-19 22:22:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:26,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 22:22:26,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:26,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:26,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719327218] [2020-10-19 22:22:26,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:26,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-19 22:22:26,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327971961] [2020-10-19 22:22:26,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:26,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:26,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:26,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:26,471 INFO L87 Difference]: Start difference. First operand 444 states and 601 transitions. Second operand 6 states. [2020-10-19 22:22:26,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:26,542 INFO L93 Difference]: Finished difference Result 901 states and 1199 transitions. [2020-10-19 22:22:26,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:26,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-19 22:22:26,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:26,547 INFO L225 Difference]: With dead ends: 901 [2020-10-19 22:22:26,547 INFO L226 Difference]: Without dead ends: 842 [2020-10-19 22:22:26,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:26,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-10-19 22:22:26,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 476. [2020-10-19 22:22:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-19 22:22:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 646 transitions. [2020-10-19 22:22:26,579 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 646 transitions. Word has length 32 [2020-10-19 22:22:26,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:26,580 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 646 transitions. [2020-10-19 22:22:26,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:26,580 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 646 transitions. [2020-10-19 22:22:26,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 22:22:26,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:26,581 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:26,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-19 22:22:26,802 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:26,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:26,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1711625809, now seen corresponding path program 1 times [2020-10-19 22:22:26,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:26,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116324126] [2020-10-19 22:22:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:22:26,861 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:22:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:22:26,911 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:22:26,958 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-19 22:22:26,959 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:22:27,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-19 22:22:27,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:22:27 BoogieIcfgContainer [2020-10-19 22:22:27,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:22:27,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:22:27,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:22:27,221 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:22:27,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:19" (3/4) ... [2020-10-19 22:22:27,223 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:22:27,311 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:22:27,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:22:27,314 INFO L168 Benchmark]: Toolchain (without parser) took 8809.88 ms. Allocated memory was 36.7 MB in the beginning and 77.1 MB in the end (delta: 40.4 MB). Free memory was 16.4 MB in the beginning and 41.2 MB in the end (delta: -24.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:27,315 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 34.1 MB. Free memory was 10.1 MB in the beginning and 10.1 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:22:27,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.02 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 15.6 MB in the beginning and 21.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:27,316 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.71 ms. Allocated memory is still 44.6 MB. Free memory was 21.5 MB in the beginning and 18.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:27,317 INFO L168 Benchmark]: Boogie Preprocessor took 40.88 ms. Allocated memory is still 44.6 MB. Free memory was 18.9 MB in the beginning and 16.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:27,318 INFO L168 Benchmark]: RCFGBuilder took 632.75 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 16.6 MB in the beginning and 11.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:27,318 INFO L168 Benchmark]: TraceAbstraction took 7557.88 ms. Allocated memory was 46.7 MB in the beginning and 77.1 MB in the end (delta: 30.4 MB). Free memory was 11.1 MB in the beginning and 45.9 MB in the end (delta: -34.8 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-19 22:22:27,319 INFO L168 Benchmark]: Witness Printer took 91.20 ms. Allocated memory is still 77.1 MB. Free memory was 45.9 MB in the beginning and 41.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:27,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 34.1 MB. Free memory was 10.1 MB in the beginning and 10.1 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 426.02 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 15.6 MB in the beginning and 21.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 50.71 ms. Allocated memory is still 44.6 MB. Free memory was 21.5 MB in the beginning and 18.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 40.88 ms. Allocated memory is still 44.6 MB. Free memory was 18.9 MB in the beginning and 16.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 632.75 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 16.6 MB in the beginning and 11.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 7557.88 ms. Allocated memory was 46.7 MB in the beginning and 77.1 MB in the end (delta: 30.4 MB). Free memory was 11.1 MB in the beginning and 45.9 MB in the end (delta: -34.8 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 91.20 ms. Allocated memory is still 77.1 MB. Free memory was 45.9 MB in the beginning and 41.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L244] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_1-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 102 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.4s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1434 SDtfs, 3934 SDslu, 5661 SDs, 0 SdLazy, 1202 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 465 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=476occurred in iteration=10, 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, 10 MinimizatonAttempts, 1618 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 26009 SizeOfPredicates, 41 NumberOfNonLiveVariables, 764 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...