./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e1a00cf 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 ../../../trunk/examples/svcomp/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.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 18a7fa5d929aa4f94783ce4ac14d173e66069fd4 ............................................................................................................................................................................................................................................................................... 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 ../../../trunk/examples/svcomp/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.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 18a7fa5d929aa4f94783ce4ac14d173e66069fd4 .............................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.2.0-0e1a00c [2020-11-29 12:31:36,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 12:31:36,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 12:31:36,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 12:31:36,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 12:31:36,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 12:31:36,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 12:31:36,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 12:31:36,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 12:31:36,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 12:31:36,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 12:31:36,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 12:31:36,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 12:31:36,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 12:31:36,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 12:31:36,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 12:31:36,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 12:31:37,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 12:31:37,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 12:31:37,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 12:31:37,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 12:31:37,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 12:31:37,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 12:31:37,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 12:31:37,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 12:31:37,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 12:31:37,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 12:31:37,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 12:31:37,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 12:31:37,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 12:31:37,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 12:31:37,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 12:31:37,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 12:31:37,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 12:31:37,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 12:31:37,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 12:31:37,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 12:31:37,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 12:31:37,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 12:31:37,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 12:31:37,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 12:31:37,058 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 12:31:37,119 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 12:31:37,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 12:31:37,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 12:31:37,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 12:31:37,124 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 12:31:37,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 12:31:37,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 12:31:37,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 12:31:37,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 12:31:37,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 12:31:37,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 12:31:37,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 12:31:37,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 12:31:37,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 12:31:37,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 12:31:37,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 12:31:37,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 12:31:37,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 12:31:37,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 12:31:37,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 12:31:37,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 12:31:37,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 12:31:37,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 12:31:37,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 12:31:37,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 12:31:37,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 12:31:37,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 12:31:37,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 12:31:37,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 12:31:37,132 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18a7fa5d929aa4f94783ce4ac14d173e66069fd4 [2020-11-29 12:31:37,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 12:31:37,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 12:31:37,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 12:31:37,674 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 12:31:37,675 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 12:31:37,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2020-11-29 12:31:37,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e26cff0bd/17dea5b96ffb468b8f30683321c43159/FLAG262dd40d1 [2020-11-29 12:31:38,383 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 12:31:38,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2020-11-29 12:31:38,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e26cff0bd/17dea5b96ffb468b8f30683321c43159/FLAG262dd40d1 [2020-11-29 12:31:38,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e26cff0bd/17dea5b96ffb468b8f30683321c43159 [2020-11-29 12:31:38,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 12:31:38,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 12:31:38,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 12:31:38,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 12:31:38,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 12:31:38,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:31:38" (1/1) ... [2020-11-29 12:31:38,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21dcf9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:38, skipping insertion in model container [2020-11-29 12:31:38,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:31:38" (1/1) ... [2020-11-29 12:31:38,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 12:31:38,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 12:31:39,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 12:31:39,072 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 12:31:39,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 12:31:39,123 INFO L208 MainTranslator]: Completed translation [2020-11-29 12:31:39,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:39 WrapperNode [2020-11-29 12:31:39,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 12:31:39,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 12:31:39,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 12:31:39,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 12:31:39,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:39" (1/1) ... [2020-11-29 12:31:39,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:39" (1/1) ... [2020-11-29 12:31:39,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 12:31:39,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 12:31:39,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 12:31:39,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 12:31:39,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:39" (1/1) ... [2020-11-29 12:31:39,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:39" (1/1) ... [2020-11-29 12:31:39,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:39" (1/1) ... [2020-11-29 12:31:39,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:39" (1/1) ... [2020-11-29 12:31:39,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:39" (1/1) ... [2020-11-29 12:31:39,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:39" (1/1) ... [2020-11-29 12:31:39,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:39" (1/1) ... [2020-11-29 12:31:39,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 12:31:39,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 12:31:39,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 12:31:39,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 12:31:39,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:39" (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 [2020-11-29 12:31:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 12:31:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 12:31:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 12:31:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 12:31:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 12:31:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 12:31:39,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 12:31:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 12:31:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 12:31:39,604 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 12:31:39,604 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 12:31:39,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:31:39 BoogieIcfgContainer [2020-11-29 12:31:39,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 12:31:39,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 12:31:39,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 12:31:39,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 12:31:39,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:31:38" (1/3) ... [2020-11-29 12:31:39,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1d5591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:31:39, skipping insertion in model container [2020-11-29 12:31:39,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:39" (2/3) ... [2020-11-29 12:31:39,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1d5591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:31:39, skipping insertion in model container [2020-11-29 12:31:39,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:31:39" (3/3) ... [2020-11-29 12:31:39,623 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c.v+cfa-reducer.c [2020-11-29 12:31:39,647 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 12:31:39,652 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 12:31:39,671 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 12:31:39,713 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 12:31:39,717 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 12:31:39,718 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 12:31:39,718 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 12:31:39,718 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 12:31:39,718 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 12:31:39,718 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 12:31:39,719 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 12:31:39,755 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-29 12:31:39,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 12:31:39,771 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 12:31:39,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 12:31:39,773 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 12:31:39,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 12:31:39,784 INFO L82 PathProgramCache]: Analyzing trace with hash -2135388399, now seen corresponding path program 1 times [2020-11-29 12:31:39,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 12:31:39,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681818997] [2020-11-29 12:31:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 12:31:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 12:31:40,010 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 12:31:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 12:31:40,077 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 12:31:40,122 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 12:31:40,123 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 12:31:40,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 12:31:40,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:31:40 BoogieIcfgContainer [2020-11-29 12:31:40,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 12:31:40,187 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 12:31:40,188 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 12:31:40,188 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 12:31:40,189 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:31:39" (3/4) ... [2020-11-29 12:31:40,194 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 12:31:40,195 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 12:31:40,200 INFO L168 Benchmark]: Toolchain (without parser) took 1434.30 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 33.6 MB in the beginning and 37.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2020-11-29 12:31:40,204 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 56.6 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 12:31:40,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.87 ms. Allocated memory is still 56.6 MB. Free memory was 33.0 MB in the beginning and 36.2 MB in the end (delta: -3.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-11-29 12:31:40,207 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.94 ms. Allocated memory is still 56.6 MB. Free memory was 36.1 MB in the beginning and 34.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 12:31:40,209 INFO L168 Benchmark]: Boogie Preprocessor took 35.97 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 33.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 12:31:40,211 INFO L168 Benchmark]: RCFGBuilder took 396.24 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 33.4 MB in the beginning and 51.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 12:31:40,212 INFO L168 Benchmark]: TraceAbstraction took 573.71 ms. Allocated memory is still 73.4 MB. Free memory was 51.0 MB in the beginning and 37.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 12:31:40,214 INFO L168 Benchmark]: Witness Printer took 7.61 ms. Allocated memory is still 73.4 MB. Free memory was 37.6 MB in the beginning and 37.3 MB in the end (delta: 286.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 12:31:40,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 56.6 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.87 ms. Allocated memory is still 56.6 MB. Free memory was 33.0 MB in the beginning and 36.2 MB in the end (delta: -3.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.94 ms. Allocated memory is still 56.6 MB. Free memory was 36.1 MB in the beginning and 34.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.97 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 33.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 396.24 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 33.4 MB in the beginning and 51.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 573.71 ms. Allocated memory is still 73.4 MB. Free memory was 51.0 MB in the beginning and 37.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 7.61 ms. Allocated memory is still 73.4 MB. Free memory was 37.6 MB in the beginning and 37.3 MB in the end (delta: 286.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 46, overapproximation of someBinaryArithmeticDOUBLEoperation at line 37. Possible FailurePath: [L1] int __return_main; [L17] float __return_72; [L18] int __return_87; VAL [__return_72=0, __return_87=0, __return_main=0] [L21] float main__a; [L22] float main__r; [L23] main__a = __VERIFIER_nondet_float() [L24] int main____CPAchecker_TMP_0; VAL [__return_72=0, __return_87=0, __return_main=0] [L25] COND TRUE main__a >= 0.10000000149011612 VAL [__return_72=0, __return_87=0, __return_main=0] [L27] COND TRUE main__a <= 100.0 [L29] main____CPAchecker_TMP_0 = 1 VAL [__return_72=0, __return_87=0, __return_main=0] [L30] COND TRUE main____CPAchecker_TMP_0 != 0 [L33] float __tmp_1; [L34] __tmp_1 = main__a [L35] float InvSqrt__x; [L36] InvSqrt__x = __tmp_1 [L37] float InvSqrt__xhalf = 0.5 * InvSqrt__x; [L38] union float_int InvSqrt__i; [L39] InvSqrt__i.f = InvSqrt__x [L40] EXPR InvSqrt__i.i [L40] InvSqrt__i.i = 1597463007 - ((InvSqrt__i.i) >> 1) [L41] EXPR InvSqrt__i.f [L41] InvSqrt__x = InvSqrt__i.f [L42] InvSqrt__x = InvSqrt__x * (1.5 - ((InvSqrt__xhalf * InvSqrt__x) * InvSqrt__x)) [L43] __return_72 = InvSqrt__x [L44] main__r = __return_72 [L45] int main____CPAchecker_TMP_1; VAL [__return_72=50, __return_87=0, __return_main=0] [L46] COND FALSE !(main__r >= 0.0) VAL [__return_72=50, __return_87=0, __return_main=0] [L72] main____CPAchecker_TMP_1 = 0 VAL [__return_72=50, __return_87=0, __return_main=0] [L53] int __tmp_2; [L54] __tmp_2 = main____CPAchecker_TMP_1 [L55] int __VERIFIER_assert__cond; [L56] __VERIFIER_assert__cond = __tmp_2 VAL [__return_72=50, __return_87=0, __return_main=0] [L57] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_72=50, __return_87=0, __return_main=0] [L4] __assert_fail("0", "inv_sqrt_Quake.c.v+cfa-reducer.c", 4, "reach_error") VAL [__return_72=50, __return_87=0, __return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.2.0-0e1a00c [2020-11-29 12:31:42,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 12:31:42,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 12:31:43,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 12:31:43,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 12:31:43,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 12:31:43,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 12:31:43,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 12:31:43,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 12:31:43,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 12:31:43,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 12:31:43,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 12:31:43,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 12:31:43,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 12:31:43,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 12:31:43,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 12:31:43,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 12:31:43,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 12:31:43,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 12:31:43,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 12:31:43,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 12:31:43,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 12:31:43,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 12:31:43,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 12:31:43,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 12:31:43,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 12:31:43,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 12:31:43,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 12:31:43,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 12:31:43,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 12:31:43,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 12:31:43,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 12:31:43,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 12:31:43,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 12:31:43,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 12:31:43,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 12:31:43,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 12:31:43,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 12:31:43,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 12:31:43,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 12:31:43,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 12:31:43,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 12:31:43,205 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 12:31:43,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 12:31:43,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 12:31:43,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 12:31:43,210 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 12:31:43,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 12:31:43,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 12:31:43,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 12:31:43,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 12:31:43,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 12:31:43,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 12:31:43,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 12:31:43,214 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 12:31:43,214 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 12:31:43,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 12:31:43,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 12:31:43,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 12:31:43,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 12:31:43,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 12:31:43,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 12:31:43,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 12:31:43,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 12:31:43,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 12:31:43,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 12:31:43,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 12:31:43,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 12:31:43,218 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 12:31:43,218 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 12:31:43,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 12:31:43,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 12:31:43,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 12:31:43,219 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18a7fa5d929aa4f94783ce4ac14d173e66069fd4 [2020-11-29 12:31:43,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 12:31:43,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 12:31:43,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 12:31:43,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 12:31:43,735 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 12:31:43,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2020-11-29 12:31:43,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616a6c397/b4d6c9fda9be416aa4a1b8cdcdd3406e/FLAG1e0c71d42 [2020-11-29 12:31:44,584 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 12:31:44,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2020-11-29 12:31:44,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616a6c397/b4d6c9fda9be416aa4a1b8cdcdd3406e/FLAG1e0c71d42 [2020-11-29 12:31:44,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616a6c397/b4d6c9fda9be416aa4a1b8cdcdd3406e [2020-11-29 12:31:44,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 12:31:44,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 12:31:44,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 12:31:44,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 12:31:44,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 12:31:44,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:31:44" (1/1) ... [2020-11-29 12:31:44,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb96a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:44, skipping insertion in model container [2020-11-29 12:31:44,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:31:44" (1/1) ... [2020-11-29 12:31:44,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 12:31:44,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 12:31:45,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 12:31:45,223 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 12:31:45,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 12:31:45,275 INFO L208 MainTranslator]: Completed translation [2020-11-29 12:31:45,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:45 WrapperNode [2020-11-29 12:31:45,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 12:31:45,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 12:31:45,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 12:31:45,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 12:31:45,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:45" (1/1) ... [2020-11-29 12:31:45,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:45" (1/1) ... [2020-11-29 12:31:45,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 12:31:45,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 12:31:45,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 12:31:45,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 12:31:45,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:45" (1/1) ... [2020-11-29 12:31:45,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:45" (1/1) ... [2020-11-29 12:31:45,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:45" (1/1) ... [2020-11-29 12:31:45,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:45" (1/1) ... [2020-11-29 12:31:45,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:45" (1/1) ... [2020-11-29 12:31:45,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:45" (1/1) ... [2020-11-29 12:31:45,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:45" (1/1) ... [2020-11-29 12:31:45,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 12:31:45,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 12:31:45,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 12:31:45,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 12:31:45,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:45" (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 [2020-11-29 12:31:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 12:31:45,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 12:31:45,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-29 12:31:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 12:31:45,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 12:31:45,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 12:31:45,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 12:31:45,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 12:31:45,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 12:31:49,066 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 12:31:49,066 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 12:31:49,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:31:49 BoogieIcfgContainer [2020-11-29 12:31:49,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 12:31:49,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 12:31:49,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 12:31:49,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 12:31:49,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:31:44" (1/3) ... [2020-11-29 12:31:49,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d5a33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:31:49, skipping insertion in model container [2020-11-29 12:31:49,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:31:45" (2/3) ... [2020-11-29 12:31:49,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d5a33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:31:49, skipping insertion in model container [2020-11-29 12:31:49,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:31:49" (3/3) ... [2020-11-29 12:31:49,085 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c.v+cfa-reducer.c [2020-11-29 12:31:49,102 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 12:31:49,107 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 12:31:49,120 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 12:31:49,147 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 12:31:49,147 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 12:31:49,148 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 12:31:49,148 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 12:31:49,148 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 12:31:49,148 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 12:31:49,149 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 12:31:49,149 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 12:31:49,162 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-29 12:31:49,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 12:31:49,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 12:31:49,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 12:31:49,170 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 12:31:49,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 12:31:49,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2135388399, now seen corresponding path program 1 times [2020-11-29 12:31:49,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 12:31:49,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160003443] [2020-11-29 12:31:49,193 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 [2020-11-29 12:31:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 12:31:51,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 12:31:51,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 12:31:52,740 WARN L197 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-11-29 12:31:54,737 WARN L197 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 12 [2020-11-29 12:31:56,899 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|))))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 100.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))) (= c_ULTIMATE.start_main_~main__r~0 ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse1 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse1) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))))))) is different from false [2020-11-29 12:32:03,299 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|))))) (and (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 100.0)) (fp.geq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 2500000037252903.0 25000000000000000.0))) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (let ((.cse1 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven .cse1) (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (_ +zero 11 53)))))) is different from false [2020-11-29 12:32:05,401 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|))))) (and (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 100.0)) (fp.geq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 2500000037252903.0 25000000000000000.0))) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (let ((.cse1 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven .cse1) (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (_ +zero 11 53)))))) is different from true [2020-11-29 12:32:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 12:32:18,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 12:32:19,942 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-11-29 12:32:22,031 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 (let ((.cse1 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__a~0))) .cse0) .cse0))))))) (_ +zero 11 53)) (not (= c_ULTIMATE.start_main_~main__a~0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))))) is different from false [2020-11-29 12:32:24,176 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 (let ((.cse1 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__a~0))) .cse0) .cse0))))))) (_ +zero 11 53)) (not (= c_ULTIMATE.start_main_~main__a~0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))))) is different from true [2020-11-29 12:32:26,829 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 (let ((.cse1 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__a~0))) .cse0) .cse0))))))) (_ +zero 11 53)) (not (= c_ULTIMATE.start_main_~main__a~0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))))) (not (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__a~0) ((_ to_fp 11 53) c_currentRoundingMode 100.0)))) is different from false [2020-11-29 12:32:29,000 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 (let ((.cse1 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__a~0))) .cse0) .cse0))))))) (_ +zero 11 53)) (not (= c_ULTIMATE.start_main_~main__a~0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))))) (not (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__a~0) ((_ to_fp 11 53) c_currentRoundingMode 100.0)))) is different from true [2020-11-29 12:32:31,105 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|))))) (or (not (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse1 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse1) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (_ +zero 11 53)) (not (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 100.0)))))) is different from false [2020-11-29 12:32:33,260 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|))))) (or (not (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse1 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse1) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (_ +zero 11 53)) (not (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 100.0)))))) is different from true [2020-11-29 12:32:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 12:32:33,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160003443] [2020-11-29 12:32:33,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 12:32:33,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2020-11-29 12:32:33,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042585037] [2020-11-29 12:32:33,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 12:32:33,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 12:32:33,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 12:32:33,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=19, Unknown=9, NotChecked=60, Total=110 [2020-11-29 12:32:33,313 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 11 states. [2020-11-29 12:32:36,229 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|))))) (or (not (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse1 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse1) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (_ +zero 11 53)) (not (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 100.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2020-11-29 12:32:38,382 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|))))) (or (not (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse1 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse1) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (_ +zero 11 53)) (not (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 100.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-11-29 12:32:40,539 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__a~0))) (and (or (forall ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 (let ((.cse1 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__a~0))) .cse0) .cse0))))))) (_ +zero 11 53)) (not (= c_ULTIMATE.start_main_~main__a~0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))))) (not (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 100.0)))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))) is different from false [2020-11-29 12:32:42,689 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__a~0))) (and (or (forall ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 (let ((.cse1 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__a~0))) .cse0) .cse0))))))) (_ +zero 11 53)) (not (= c_ULTIMATE.start_main_~main__a~0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))))) (not (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 100.0)))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.geq .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))) is different from true [2020-11-29 12:32:50,429 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-29 12:32:50,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 12:32:50,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 12:32:50,633 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:829) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 45 more [2020-11-29 12:32:50,644 INFO L168 Benchmark]: Toolchain (without parser) took 65737.83 ms. Allocated memory is still 50.3 MB. Free memory was 27.4 MB in the beginning and 21.6 MB in the end (delta: 5.8 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-11-29 12:32:50,645 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 41.9 MB. Free memory was 21.9 MB in the beginning and 21.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 12:32:50,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.22 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 27.1 MB in the end (delta: -285.5 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-11-29 12:32:50,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.75 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 25.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 12:32:50,649 INFO L168 Benchmark]: Boogie Preprocessor took 35.26 ms. Allocated memory is still 50.3 MB. Free memory was 25.5 MB in the beginning and 24.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 12:32:50,650 INFO L168 Benchmark]: RCFGBuilder took 3695.00 ms. Allocated memory is still 50.3 MB. Free memory was 24.0 MB in the beginning and 22.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-11-29 12:32:50,651 INFO L168 Benchmark]: TraceAbstraction took 61571.41 ms. Allocated memory is still 50.3 MB. Free memory was 21.8 MB in the beginning and 21.6 MB in the end (delta: 168.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 16.1 GB. [2020-11-29 12:32:50,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 41.9 MB. Free memory was 21.9 MB in the beginning and 21.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 363.22 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 27.1 MB in the end (delta: -285.5 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.75 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 25.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.26 ms. Allocated memory is still 50.3 MB. Free memory was 25.5 MB in the beginning and 24.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3695.00 ms. Allocated memory is still 50.3 MB. Free memory was 24.0 MB in the beginning and 22.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 61571.41 ms. Allocated memory is still 50.3 MB. Free memory was 21.8 MB in the beginning and 21.6 MB in the end (delta: 168.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...