./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-25 19:36:45,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:36:45,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:36:45,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:36:45,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:36:45,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:36:45,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:36:45,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:36:45,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:36:45,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:36:45,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:36:45,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:36:45,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:36:45,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:36:45,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:36:45,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:36:45,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:36:45,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:36:45,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:36:45,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:36:45,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:36:45,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:36:45,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:36:45,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:36:45,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:36:45,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:36:45,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:36:45,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:36:45,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:36:45,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:36:45,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:36:45,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:36:45,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:36:45,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:36:45,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:36:45,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:36:45,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:36:45,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:36:45,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:36:45,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:36:45,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:36:45,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:36:45,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:36:45,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:36:45,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:36:45,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:36:45,246 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:36:45,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:36:45,246 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:36:45,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:36:45,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:36:45,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:36:45,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:36:45,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:36:45,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:36:45,249 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:36:45,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:36:45,250 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:36:45,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:36:45,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:36:45,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:36:45,251 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:36:45,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:36:45,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:36:45,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:36:45,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:36:45,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:36:45,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:36:45,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:36:45,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:36:45,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:36:45,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-10-25 19:36:45,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:36:45,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:36:45,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:36:45,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:36:45,761 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:36:45,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-10-25 19:36:45,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67719a2c7/d8d8e2d155f646fda5351a80595ea9ed/FLAGb477bc80f [2020-10-25 19:36:46,536 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:36:46,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-10-25 19:36:46,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67719a2c7/d8d8e2d155f646fda5351a80595ea9ed/FLAGb477bc80f [2020-10-25 19:36:46,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67719a2c7/d8d8e2d155f646fda5351a80595ea9ed [2020-10-25 19:36:46,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:36:46,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:36:46,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:36:46,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:36:46,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:36:46,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:36:46" (1/1) ... [2020-10-25 19:36:46,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e1a64dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:46, skipping insertion in model container [2020-10-25 19:36:46,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:36:46" (1/1) ... [2020-10-25 19:36:46,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:36:46,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:36:47,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:36:47,222 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:36:47,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:36:47,360 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:36:47,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47 WrapperNode [2020-10-25 19:36:47,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:36:47,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:36:47,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:36:47,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:36:47,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:36:47,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:36:47,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:36:47,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:36:47,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (1/1) ... [2020-10-25 19:36:47,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:36:47,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:36:47,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:36:47,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:36:47,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (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 [2020-10-25 19:36:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:36:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:36:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:36:47,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:36:48,533 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:36:48,533 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-10-25 19:36:48,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:48 BoogieIcfgContainer [2020-10-25 19:36:48,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:36:48,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:36:48,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:36:48,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:36:48,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:36:46" (1/3) ... [2020-10-25 19:36:48,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc54389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:36:48, skipping insertion in model container [2020-10-25 19:36:48,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:47" (2/3) ... [2020-10-25 19:36:48,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc54389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:36:48, skipping insertion in model container [2020-10-25 19:36:48,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:48" (3/3) ... [2020-10-25 19:36:48,550 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-10-25 19:36:48,567 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:36:48,573 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-25 19:36:48,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-25 19:36:48,619 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:36:48,620 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:36:48,620 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:36:48,620 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:36:48,620 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:36:48,620 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:36:48,621 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:36:48,621 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:36:48,639 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-10-25 19:36:48,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 19:36:48,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:48,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:48,648 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:48,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:48,656 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-10-25 19:36:48,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:48,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216073039] [2020-10-25 19:36:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:49,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216073039] [2020-10-25 19:36:49,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:49,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-25 19:36:49,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189283513] [2020-10-25 19:36:49,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 19:36:49,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:49,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 19:36:49,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:49,041 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 7 states. [2020-10-25 19:36:49,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:49,614 INFO L93 Difference]: Finished difference Result 280 states and 407 transitions. [2020-10-25 19:36:49,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-25 19:36:49,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-25 19:36:49,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:49,632 INFO L225 Difference]: With dead ends: 280 [2020-10-25 19:36:49,633 INFO L226 Difference]: Without dead ends: 181 [2020-10-25 19:36:49,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-25 19:36:49,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-25 19:36:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 119. [2020-10-25 19:36:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-25 19:36:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-10-25 19:36:49,708 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 15 [2020-10-25 19:36:49,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:49,708 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-10-25 19:36:49,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 19:36:49,709 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-10-25 19:36:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-25 19:36:49,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:49,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:49,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:36:49,712 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:49,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:49,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1395490240, now seen corresponding path program 1 times [2020-10-25 19:36:49,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:49,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502294864] [2020-10-25 19:36:49,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:49,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502294864] [2020-10-25 19:36:49,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:49,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-25 19:36:49,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670432471] [2020-10-25 19:36:49,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 19:36:49,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:49,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 19:36:49,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:49,925 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2020-10-25 19:36:50,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:50,376 INFO L93 Difference]: Finished difference Result 214 states and 265 transitions. [2020-10-25 19:36:50,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-25 19:36:50,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-25 19:36:50,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:50,380 INFO L225 Difference]: With dead ends: 214 [2020-10-25 19:36:50,380 INFO L226 Difference]: Without dead ends: 185 [2020-10-25 19:36:50,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-25 19:36:50,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-25 19:36:50,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2020-10-25 19:36:50,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-25 19:36:50,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-10-25 19:36:50,396 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2020-10-25 19:36:50,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:50,396 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-10-25 19:36:50,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 19:36:50,396 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-10-25 19:36:50,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 19:36:50,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:50,398 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] [2020-10-25 19:36:50,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:36:50,399 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:50,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:50,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1831228676, now seen corresponding path program 1 times [2020-10-25 19:36:50,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:50,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058822474] [2020-10-25 19:36:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:50,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058822474] [2020-10-25 19:36:50,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:50,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-25 19:36:50,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717129471] [2020-10-25 19:36:50,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-25 19:36:50,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:50,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-25 19:36:50,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-25 19:36:50,717 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 14 states. [2020-10-25 19:36:51,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:51,213 INFO L93 Difference]: Finished difference Result 167 states and 210 transitions. [2020-10-25 19:36:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-25 19:36:51,214 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-10-25 19:36:51,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:51,215 INFO L225 Difference]: With dead ends: 167 [2020-10-25 19:36:51,216 INFO L226 Difference]: Without dead ends: 162 [2020-10-25 19:36:51,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-10-25 19:36:51,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-25 19:36:51,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 117. [2020-10-25 19:36:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-25 19:36:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 153 transitions. [2020-10-25 19:36:51,234 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 153 transitions. Word has length 23 [2020-10-25 19:36:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:51,235 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 153 transitions. [2020-10-25 19:36:51,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-25 19:36:51,235 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 153 transitions. [2020-10-25 19:36:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 19:36:51,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:51,238 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] [2020-10-25 19:36:51,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 19:36:51,238 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:51,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:51,240 INFO L82 PathProgramCache]: Analyzing trace with hash 384833474, now seen corresponding path program 1 times [2020-10-25 19:36:51,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:51,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30884139] [2020-10-25 19:36:51,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:51,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30884139] [2020-10-25 19:36:51,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:51,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-25 19:36:51,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051883739] [2020-10-25 19:36:51,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 19:36:51,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:51,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 19:36:51,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:51,342 INFO L87 Difference]: Start difference. First operand 117 states and 153 transitions. Second operand 7 states. [2020-10-25 19:36:51,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:51,523 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2020-10-25 19:36:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 19:36:51,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-25 19:36:51,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:51,526 INFO L225 Difference]: With dead ends: 183 [2020-10-25 19:36:51,526 INFO L226 Difference]: Without dead ends: 158 [2020-10-25 19:36:51,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-25 19:36:51,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-25 19:36:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 120. [2020-10-25 19:36:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-25 19:36:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2020-10-25 19:36:51,540 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 23 [2020-10-25 19:36:51,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:51,540 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2020-10-25 19:36:51,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 19:36:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2020-10-25 19:36:51,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 19:36:51,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:51,542 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] [2020-10-25 19:36:51,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 19:36:51,543 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:51,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:51,544 INFO L82 PathProgramCache]: Analyzing trace with hash 384893056, now seen corresponding path program 1 times [2020-10-25 19:36:51,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:51,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001532700] [2020-10-25 19:36:51,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:51,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001532700] [2020-10-25 19:36:51,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:51,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-25 19:36:51,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533239815] [2020-10-25 19:36:51,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 19:36:51,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:51,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 19:36:51,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:51,725 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand 7 states. [2020-10-25 19:36:51,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:51,915 INFO L93 Difference]: Finished difference Result 178 states and 223 transitions. [2020-10-25 19:36:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-25 19:36:51,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-25 19:36:51,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:51,920 INFO L225 Difference]: With dead ends: 178 [2020-10-25 19:36:51,920 INFO L226 Difference]: Without dead ends: 153 [2020-10-25 19:36:51,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-25 19:36:51,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-25 19:36:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-10-25 19:36:51,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-25 19:36:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2020-10-25 19:36:51,942 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 23 [2020-10-25 19:36:51,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:51,942 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2020-10-25 19:36:51,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 19:36:51,943 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2020-10-25 19:36:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 19:36:51,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:51,946 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] [2020-10-25 19:36:51,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 19:36:51,946 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:51,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:51,951 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-10-25 19:36:51,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:51,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548567906] [2020-10-25 19:36:51,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:52,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548567906] [2020-10-25 19:36:52,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:52,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-25 19:36:52,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8866596] [2020-10-25 19:36:52,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:36:52,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:52,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:36:52,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:36:52,137 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand 6 states. [2020-10-25 19:36:52,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:52,427 INFO L93 Difference]: Finished difference Result 342 states and 430 transitions. [2020-10-25 19:36:52,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 19:36:52,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-25 19:36:52,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:52,430 INFO L225 Difference]: With dead ends: 342 [2020-10-25 19:36:52,430 INFO L226 Difference]: Without dead ends: 296 [2020-10-25 19:36:52,431 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 [2020-10-25 19:36:52,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-25 19:36:52,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 134. [2020-10-25 19:36:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-25 19:36:52,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 177 transitions. [2020-10-25 19:36:52,454 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 177 transitions. Word has length 23 [2020-10-25 19:36:52,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:52,455 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 177 transitions. [2020-10-25 19:36:52,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:36:52,460 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 177 transitions. [2020-10-25 19:36:52,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 19:36:52,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:52,463 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] [2020-10-25 19:36:52,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 19:36:52,464 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:52,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:52,466 INFO L82 PathProgramCache]: Analyzing trace with hash 84509231, now seen corresponding path program 1 times [2020-10-25 19:36:52,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:52,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120529539] [2020-10-25 19:36:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:36:52,522 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:36:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:36:52,560 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:36:52,599 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 19:36:52,599 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 19:36:52,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 19:36:52,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:36:52 BoogieIcfgContainer [2020-10-25 19:36:52,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:36:52,699 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:36:52,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:36:52,700 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:36:52,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:48" (3/4) ... [2020-10-25 19:36:52,706 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 19:36:52,707 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:36:52,712 INFO L168 Benchmark]: Toolchain (without parser) took 5821.15 ms. Allocated memory was 39.8 MB in the beginning and 86.0 MB in the end (delta: 46.1 MB). Free memory was 16.9 MB in the beginning and 36.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:52,713 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 39.8 MB. Free memory was 27.0 MB in the beginning and 27.0 MB in the end (delta: 24.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:36:52,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 457.68 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 25.2 MB in the beginning and 31.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:52,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.27 ms. Allocated memory is still 48.2 MB. Free memory was 31.5 MB in the beginning and 29.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:52,725 INFO L168 Benchmark]: Boogie Preprocessor took 87.72 ms. Allocated memory is still 48.2 MB. Free memory was 29.2 MB in the beginning and 27.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:36:52,726 INFO L168 Benchmark]: RCFGBuilder took 964.36 ms. Allocated memory is still 48.2 MB. Free memory was 27.3 MB in the beginning and 19.7 MB in the end (delta: 7.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:52,727 INFO L168 Benchmark]: TraceAbstraction took 4156.54 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 31.5 MB in the beginning and 36.8 MB in the end (delta: -5.3 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:52,731 INFO L168 Benchmark]: Witness Printer took 7.57 ms. Allocated memory is still 86.0 MB. Free memory was 36.8 MB in the beginning and 36.1 MB in the end (delta: 780.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:52,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 39.8 MB. Free memory was 27.0 MB in the beginning and 27.0 MB in the end (delta: 24.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 457.68 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 25.2 MB in the beginning and 31.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 116.27 ms. Allocated memory is still 48.2 MB. Free memory was 31.5 MB in the beginning and 29.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.72 ms. Allocated memory is still 48.2 MB. Free memory was 29.2 MB in the beginning and 27.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 964.36 ms. Allocated memory is still 48.2 MB. Free memory was 27.3 MB in the beginning and 19.7 MB in the end (delta: 7.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4156.54 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 31.5 MB in the beginning and 36.8 MB in the end (delta: -5.3 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. * Witness Printer took 7.57 ms. Allocated memory is still 86.0 MB. Free memory was 36.8 MB in the beginning and 36.1 MB in the end (delta: 780.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] 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); [L234] 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); [L235] b = base2flt(mb, eb) [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_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 93 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 716 SDtfs, 1334 SDslu, 3546 SDs, 0 SdLazy, 662 SolverSat, 106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 417 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 6860 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 0.2.0-5485861 [2020-10-25 19:36:55,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:36:55,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:36:55,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:36:55,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:36:55,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:36:55,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:36:55,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:36:55,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:36:55,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:36:55,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:36:55,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:36:55,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:36:55,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:36:55,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:36:55,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:36:55,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:36:55,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:36:55,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:36:55,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:36:55,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:36:55,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:36:55,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:36:55,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:36:55,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:36:55,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:36:55,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:36:55,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:36:55,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:36:55,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:36:55,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:36:55,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:36:55,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:36:55,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:36:55,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:36:55,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:36:55,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:36:55,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:36:55,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:36:55,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:36:55,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:36:55,507 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 19:36:55,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:36:55,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:36:55,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:36:55,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:36:55,571 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:36:55,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:36:55,571 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:36:55,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:36:55,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:36:55,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:36:55,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:36:55,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:36:55,574 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 19:36:55,575 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 19:36:55,575 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:36:55,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:36:55,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:36:55,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:36:55,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:36:55,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:36:55,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:36:55,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:36:55,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:36:55,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:36:55,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:36:55,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:36:55,578 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 19:36:55,579 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 19:36:55,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:36:55,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:36:55,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 19:36:55,580 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-10-25 19:36:55,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:36:56,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:36:56,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:36:56,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:36:56,029 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:36:56,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-10-25 19:36:56,120 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90ca1bd9e/91ab58b24bbd4c0d954f8a4e379d55bb/FLAG3c569cb5d [2020-10-25 19:36:56,896 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:36:56,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-10-25 19:36:56,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90ca1bd9e/91ab58b24bbd4c0d954f8a4e379d55bb/FLAG3c569cb5d [2020-10-25 19:36:57,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90ca1bd9e/91ab58b24bbd4c0d954f8a4e379d55bb [2020-10-25 19:36:57,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:36:57,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:36:57,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:36:57,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:36:57,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:36:57,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:36:57" (1/1) ... [2020-10-25 19:36:57,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2743092d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:57, skipping insertion in model container [2020-10-25 19:36:57,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:36:57" (1/1) ... [2020-10-25 19:36:57,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:36:57,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:36:57,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:36:57,561 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:36:57,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:36:57,620 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:36:57,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:57 WrapperNode [2020-10-25 19:36:57,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:36:57,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:36:57,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:36:57,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:36:57,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:57" (1/1) ... [2020-10-25 19:36:57,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:57" (1/1) ... [2020-10-25 19:36:57,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:36:57,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:36:57,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:36:57,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:36:57,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:57" (1/1) ... [2020-10-25 19:36:57,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:57" (1/1) ... [2020-10-25 19:36:57,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:57" (1/1) ... [2020-10-25 19:36:57,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:57" (1/1) ... [2020-10-25 19:36:57,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:57" (1/1) ... [2020-10-25 19:36:57,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:57" (1/1) ... [2020-10-25 19:36:57,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:57" (1/1) ... [2020-10-25 19:36:57,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:36:57,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:36:57,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:36:57,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:36:57,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:57" (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 [2020-10-25 19:36:57,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 19:36:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:36:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:36:57,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:36:58,755 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:36:58,756 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-10-25 19:36:58,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:58 BoogieIcfgContainer [2020-10-25 19:36:58,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:36:58,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:36:58,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:36:58,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:36:58,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:36:57" (1/3) ... [2020-10-25 19:36:58,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565e6dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:36:58, skipping insertion in model container [2020-10-25 19:36:58,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:57" (2/3) ... [2020-10-25 19:36:58,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565e6dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:36:58, skipping insertion in model container [2020-10-25 19:36:58,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:58" (3/3) ... [2020-10-25 19:36:58,767 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-10-25 19:36:58,779 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:36:58,784 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-25 19:36:58,800 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-25 19:36:58,827 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:36:58,828 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:36:58,828 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:36:58,828 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:36:58,828 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:36:58,829 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:36:58,829 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:36:58,829 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:36:58,846 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-10-25 19:36:58,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 19:36:58,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:58,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:58,854 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:58,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:58,860 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-10-25 19:36:58,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:36:58,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518620049] [2020-10-25 19:36:58,873 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 [2020-10-25 19:36:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:59,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-25 19:36:59,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:59,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:36:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:59,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518620049] [2020-10-25 19:36:59,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:59,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-25 19:36:59,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578668579] [2020-10-25 19:36:59,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 19:36:59,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:36:59,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 19:36:59,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:36:59,292 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 5 states. [2020-10-25 19:36:59,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:59,598 INFO L93 Difference]: Finished difference Result 238 states and 340 transitions. [2020-10-25 19:36:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 19:36:59,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-25 19:36:59,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:59,617 INFO L225 Difference]: With dead ends: 238 [2020-10-25 19:36:59,617 INFO L226 Difference]: Without dead ends: 139 [2020-10-25 19:36:59,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:59,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-25 19:36:59,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-10-25 19:36:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-25 19:36:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2020-10-25 19:36:59,693 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 15 [2020-10-25 19:36:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:59,694 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2020-10-25 19:36:59,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 19:36:59,695 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2020-10-25 19:36:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-25 19:36:59,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:59,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:59,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 19:36:59,921 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:59,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:59,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1695814483, now seen corresponding path program 1 times [2020-10-25 19:36:59,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:36:59,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95910703] [2020-10-25 19:36:59,925 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 [2020-10-25 19:36:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:37:00,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-25 19:37:00,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:37:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:00,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:37:00,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:00,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95910703] [2020-10-25 19:37:00,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:37:00,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-10-25 19:37:00,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681668671] [2020-10-25 19:37:00,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:37:00,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:37:00,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:37:00,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:37:00,074 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 6 states. [2020-10-25 19:37:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:37:00,308 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2020-10-25 19:37:00,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-25 19:37:00,309 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-25 19:37:00,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:37:00,311 INFO L225 Difference]: With dead ends: 226 [2020-10-25 19:37:00,311 INFO L226 Difference]: Without dead ends: 200 [2020-10-25 19:37:00,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-25 19:37:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-25 19:37:00,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 119. [2020-10-25 19:37:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-25 19:37:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-10-25 19:37:00,334 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 19 [2020-10-25 19:37:00,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:37:00,334 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-10-25 19:37:00,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:37:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-10-25 19:37:00,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-25 19:37:00,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:37:00,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:37:00,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 19:37:00,547 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:37:00,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:37:00,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1395430658, now seen corresponding path program 1 times [2020-10-25 19:37:00,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:37:00,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962345858] [2020-10-25 19:37:00,551 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 [2020-10-25 19:37:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:37:00,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 19:37:00,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:37:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:00,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:37:00,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:00,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962345858] [2020-10-25 19:37:00,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:37:00,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-10-25 19:37:00,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706929899] [2020-10-25 19:37:00,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 19:37:00,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:37:00,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 19:37:00,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:37:00,714 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2020-10-25 19:37:01,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:37:01,075 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2020-10-25 19:37:01,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-25 19:37:01,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-25 19:37:01,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:37:01,077 INFO L225 Difference]: With dead ends: 214 [2020-10-25 19:37:01,078 INFO L226 Difference]: Without dead ends: 185 [2020-10-25 19:37:01,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-25 19:37:01,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-25 19:37:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2020-10-25 19:37:01,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-25 19:37:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-10-25 19:37:01,090 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2020-10-25 19:37:01,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:37:01,091 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-10-25 19:37:01,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 19:37:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-10-25 19:37:01,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 19:37:01,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:37:01,093 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] [2020-10-25 19:37:01,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-25 19:37:01,309 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:37:01,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:37:01,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1831228676, now seen corresponding path program 1 times [2020-10-25 19:37:01,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:37:01,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630822804] [2020-10-25 19:37:01,312 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 [2020-10-25 19:37:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:37:01,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-25 19:37:01,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:37:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:01,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:37:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:01,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630822804] [2020-10-25 19:37:01,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:37:01,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-10-25 19:37:01,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188852221] [2020-10-25 19:37:01,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 19:37:01,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:37:01,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 19:37:01,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:37:01,622 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 9 states. [2020-10-25 19:37:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:37:02,079 INFO L93 Difference]: Finished difference Result 183 states and 230 transitions. [2020-10-25 19:37:02,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 19:37:02,085 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-25 19:37:02,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:37:02,089 INFO L225 Difference]: With dead ends: 183 [2020-10-25 19:37:02,089 INFO L226 Difference]: Without dead ends: 179 [2020-10-25 19:37:02,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-25 19:37:02,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-25 19:37:02,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2020-10-25 19:37:02,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-25 19:37:02,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2020-10-25 19:37:02,108 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 23 [2020-10-25 19:37:02,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:37:02,108 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2020-10-25 19:37:02,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 19:37:02,109 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2020-10-25 19:37:02,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 19:37:02,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:37:02,110 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] [2020-10-25 19:37:02,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-25 19:37:02,325 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:37:02,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:37:02,326 INFO L82 PathProgramCache]: Analyzing trace with hash 384833474, now seen corresponding path program 1 times [2020-10-25 19:37:02,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:37:02,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106070995] [2020-10-25 19:37:02,327 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 [2020-10-25 19:37:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:37:02,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 19:37:02,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:37:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:02,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:37:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:02,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106070995] [2020-10-25 19:37:02,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:37:02,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-10-25 19:37:02,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002091672] [2020-10-25 19:37:02,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 19:37:02,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:37:02,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 19:37:02,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:37:02,483 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand 7 states. [2020-10-25 19:37:02,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:37:02,712 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2020-10-25 19:37:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-25 19:37:02,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-25 19:37:02,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:37:02,714 INFO L225 Difference]: With dead ends: 182 [2020-10-25 19:37:02,715 INFO L226 Difference]: Without dead ends: 149 [2020-10-25 19:37:02,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-25 19:37:02,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-25 19:37:02,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-10-25 19:37:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-25 19:37:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2020-10-25 19:37:02,725 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 23 [2020-10-25 19:37:02,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:37:02,726 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2020-10-25 19:37:02,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 19:37:02,726 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2020-10-25 19:37:02,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 19:37:02,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:37:02,728 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] [2020-10-25 19:37:02,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-25 19:37:02,941 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:37:02,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:37:02,942 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-10-25 19:37:02,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:37:02,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852239870] [2020-10-25 19:37:02,943 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 [2020-10-25 19:37:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:37:03,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-25 19:37:03,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:37:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:03,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:37:03,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:03,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852239870] [2020-10-25 19:37:03,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:37:03,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-10-25 19:37:03,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405816540] [2020-10-25 19:37:03,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 19:37:03,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:37:03,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 19:37:03,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-25 19:37:03,116 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand 8 states. [2020-10-25 19:37:04,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:37:04,038 INFO L93 Difference]: Finished difference Result 369 states and 481 transitions. [2020-10-25 19:37:04,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-25 19:37:04,040 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-25 19:37:04,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:37:04,044 INFO L225 Difference]: With dead ends: 369 [2020-10-25 19:37:04,044 INFO L226 Difference]: Without dead ends: 323 [2020-10-25 19:37:04,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2020-10-25 19:37:04,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-25 19:37:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 129. [2020-10-25 19:37:04,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-25 19:37:04,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2020-10-25 19:37:04,078 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 23 [2020-10-25 19:37:04,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:37:04,079 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2020-10-25 19:37:04,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 19:37:04,079 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2020-10-25 19:37:04,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-25 19:37:04,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:37:04,084 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] [2020-10-25 19:37:04,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-25 19:37:04,286 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:37:04,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:37:04,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1177408342, now seen corresponding path program 1 times [2020-10-25 19:37:04,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:37:04,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925133234] [2020-10-25 19:37:04,288 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 [2020-10-25 19:37:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:37:04,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-25 19:37:04,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:37:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:04,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:37:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:04,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925133234] [2020-10-25 19:37:04,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:37:04,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-10-25 19:37:04,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647622851] [2020-10-25 19:37:04,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 19:37:04,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:37:04,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 19:37:04,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:37:04,467 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand 9 states. [2020-10-25 19:37:04,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:37:04,932 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2020-10-25 19:37:04,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-25 19:37:04,932 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-25 19:37:04,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:37:04,934 INFO L225 Difference]: With dead ends: 179 [2020-10-25 19:37:04,935 INFO L226 Difference]: Without dead ends: 174 [2020-10-25 19:37:04,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-25 19:37:04,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-25 19:37:04,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2020-10-25 19:37:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-25 19:37:04,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2020-10-25 19:37:04,950 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 25 [2020-10-25 19:37:04,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:37:04,951 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2020-10-25 19:37:04,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 19:37:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2020-10-25 19:37:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-25 19:37:04,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:37:04,953 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] [2020-10-25 19:37:05,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-25 19:37:05,172 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:37:05,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:37:05,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1179255384, now seen corresponding path program 1 times [2020-10-25 19:37:05,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:37:05,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514159840] [2020-10-25 19:37:05,174 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 [2020-10-25 19:37:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:37:05,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-25 19:37:05,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:37:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:05,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 19:37:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:37:05,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514159840] [2020-10-25 19:37:05,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:37:05,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2020-10-25 19:37:05,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662971819] [2020-10-25 19:37:05,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:37:05,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 19:37:05,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:37:05,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:37:05,297 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand 6 states. [2020-10-25 19:37:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:37:05,458 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2020-10-25 19:37:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-25 19:37:05,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-25 19:37:05,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:37:05,461 INFO L225 Difference]: With dead ends: 159 [2020-10-25 19:37:05,461 INFO L226 Difference]: Without dead ends: 140 [2020-10-25 19:37:05,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-25 19:37:05,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-25 19:37:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2020-10-25 19:37:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-25 19:37:05,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2020-10-25 19:37:05,475 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 25 [2020-10-25 19:37:05,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:37:05,475 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2020-10-25 19:37:05,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:37:05,476 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2020-10-25 19:37:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-25 19:37:05,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:37:05,477 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] [2020-10-25 19:37:05,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-25 19:37:05,691 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:37:05,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:37:05,691 INFO L82 PathProgramCache]: Analyzing trace with hash -390784430, now seen corresponding path program 1 times [2020-10-25 19:37:05,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 19:37:05,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959705999] [2020-10-25 19:37:05,693 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 [2020-10-25 19:37:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:37:05,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:37:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 19:37:05,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 19:37:05,844 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 19:37:05,844 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 19:37:06,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-25 19:37:06,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:37:06 BoogieIcfgContainer [2020-10-25 19:37:06,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:37:06,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:37:06,126 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:37:06,126 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:37:06,127 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:58" (3/4) ... [2020-10-25 19:37:06,129 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 19:37:06,263 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:37:06,263 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:37:06,269 INFO L168 Benchmark]: Toolchain (without parser) took 9042.44 ms. Allocated memory was 46.1 MB in the beginning and 100.7 MB in the end (delta: 54.5 MB). Free memory was 23.6 MB in the beginning and 45.9 MB in the end (delta: -22.3 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. [2020-10-25 19:37:06,270 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 37.7 MB. Free memory was 18.1 MB in the beginning and 18.0 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:37:06,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.30 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 21.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:37:06,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.73 ms. Allocated memory is still 46.1 MB. Free memory was 21.6 MB in the beginning and 30.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:37:06,273 INFO L168 Benchmark]: Boogie Preprocessor took 89.15 ms. Allocated memory is still 46.1 MB. Free memory was 30.7 MB in the beginning and 28.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:37:06,277 INFO L168 Benchmark]: RCFGBuilder took 974.15 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 28.8 MB in the beginning and 32.6 MB in the end (delta: -3.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2020-10-25 19:37:06,278 INFO L168 Benchmark]: TraceAbstraction took 7365.60 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 32.1 MB in the beginning and 50.1 MB in the end (delta: -18.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2020-10-25 19:37:06,278 INFO L168 Benchmark]: Witness Printer took 137.05 ms. Allocated memory is still 100.7 MB. Free memory was 49.1 MB in the beginning and 45.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:37:06,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 37.7 MB. Free memory was 18.1 MB in the beginning and 18.0 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 392.30 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 21.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.73 ms. Allocated memory is still 46.1 MB. Free memory was 21.6 MB in the beginning and 30.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 89.15 ms. Allocated memory is still 46.1 MB. Free memory was 30.7 MB in the beginning and 28.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 974.15 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 28.8 MB in the beginning and 32.6 MB in the end (delta: -3.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7365.60 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 32.1 MB in the beginning and 50.1 MB in the end (delta: -18.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * Witness Printer took 137.05 ms. Allocated memory is still 100.7 MB. Free memory was 49.1 MB in the beginning and 45.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 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_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] 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); [L234] 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); [L235] b = base2flt(mb, eb) [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_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 93 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 944 SDtfs, 1516 SDslu, 4241 SDs, 0 SdLazy, 821 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 291 SyntacticMatches, 6 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred 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, 8 MinimizatonAttempts, 531 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 13170 SizeOfPredicates, 45 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...