./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cbb939d5 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/floats-esbmc-regression/Double_div.i.p+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 fb5ab7eb36d10dfdf42ecc1671ac3f1599a6bed2 ............................................................................................................................................................................................................................................. 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/floats-esbmc-regression/Double_div.i.p+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 fb5ab7eb36d10dfdf42ecc1671ac3f1599a6bed2 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-cbb939d [2020-11-23 16:04:32,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 16:04:32,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 16:04:32,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 16:04:32,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 16:04:32,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 16:04:32,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 16:04:32,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 16:04:32,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 16:04:32,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 16:04:32,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 16:04:32,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 16:04:32,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 16:04:32,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 16:04:32,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 16:04:32,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 16:04:32,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 16:04:32,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 16:04:32,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 16:04:32,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 16:04:32,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 16:04:32,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 16:04:32,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 16:04:32,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 16:04:32,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 16:04:32,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 16:04:32,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 16:04:32,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 16:04:32,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 16:04:32,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 16:04:32,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 16:04:32,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 16:04:32,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 16:04:32,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 16:04:32,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 16:04:32,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 16:04:32,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 16:04:32,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 16:04:32,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 16:04:32,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 16:04:32,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 16:04:32,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-23 16:04:32,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 16:04:32,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 16:04:32,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 16:04:32,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 16:04:32,553 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 16:04:32,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 16:04:32,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 16:04:32,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-23 16:04:32,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 16:04:32,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 16:04:32,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 16:04:32,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 16:04:32,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 16:04:32,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 16:04:32,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 16:04:32,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 16:04:32,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 16:04:32,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 16:04:32,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 16:04:32,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 16:04:32,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 16:04:32,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 16:04:32,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 16:04:32,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 16:04:32,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 16:04:32,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-23 16:04:32,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-23 16:04:32,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 16:04:32,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 16:04:32,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb5ab7eb36d10dfdf42ecc1671ac3f1599a6bed2 [2020-11-23 16:04:32,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 16:04:33,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 16:04:33,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 16:04:33,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 16:04:33,063 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 16:04:33,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2020-11-23 16:04:33,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09def1e12/22735d6991eb4cfa8fa473655fb5efea/FLAGe128fcba7 [2020-11-23 16:04:33,892 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 16:04:33,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2020-11-23 16:04:33,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09def1e12/22735d6991eb4cfa8fa473655fb5efea/FLAGe128fcba7 [2020-11-23 16:04:34,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09def1e12/22735d6991eb4cfa8fa473655fb5efea [2020-11-23 16:04:34,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 16:04:34,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 16:04:34,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 16:04:34,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 16:04:34,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 16:04:34,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:04:34" (1/1) ... [2020-11-23 16:04:34,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16e9f15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:34, skipping insertion in model container [2020-11-23 16:04:34,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:04:34" (1/1) ... [2020-11-23 16:04:34,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 16:04:34,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-23 16:04:34,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:04:34,535 INFO L203 MainTranslator]: Completed pre-run [2020-11-23 16:04:34,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:04:34,572 INFO L208 MainTranslator]: Completed translation [2020-11-23 16:04:34,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:34 WrapperNode [2020-11-23 16:04:34,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 16:04:34,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 16:04:34,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 16:04:34,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 16:04:34,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:34" (1/1) ... [2020-11-23 16:04:34,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:34" (1/1) ... [2020-11-23 16:04:34,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 16:04:34,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 16:04:34,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 16:04:34,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 16:04:34,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:34" (1/1) ... [2020-11-23 16:04:34,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:34" (1/1) ... [2020-11-23 16:04:34,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:34" (1/1) ... [2020-11-23 16:04:34,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:34" (1/1) ... [2020-11-23 16:04:34,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:34" (1/1) ... [2020-11-23 16:04:34,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:34" (1/1) ... [2020-11-23 16:04:34,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:34" (1/1) ... [2020-11-23 16:04:34,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 16:04:34,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 16:04:34,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 16:04:34,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 16:04:34,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:34" (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 [2020-11-23 16:04:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 16:04:34,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 16:04:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-23 16:04:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 16:04:34,961 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 16:04:34,962 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-23 16:04:34,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:04:34 BoogieIcfgContainer [2020-11-23 16:04:34,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 16:04:34,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 16:04:34,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 16:04:34,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 16:04:34,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:04:34" (1/3) ... [2020-11-23 16:04:34,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31dfde44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:04:34, skipping insertion in model container [2020-11-23 16:04:34,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:34" (2/3) ... [2020-11-23 16:04:34,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31dfde44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:04:34, skipping insertion in model container [2020-11-23 16:04:34,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:04:34" (3/3) ... [2020-11-23 16:04:34,977 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div.i.p+cfa-reducer.c [2020-11-23 16:04:34,996 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 16:04:34,999 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 16:04:35,015 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 16:04:35,049 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 16:04:35,049 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 16:04:35,049 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 16:04:35,049 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 16:04:35,050 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 16:04:35,050 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 16:04:35,050 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 16:04:35,050 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 16:04:35,068 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-23 16:04:35,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-23 16:04:35,075 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:04:35,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-23 16:04:35,077 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:04:35,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:04:35,089 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2020-11-23 16:04:35,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 16:04:35,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592158696] [2020-11-23 16:04:35,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 16:04:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:04:35,235 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:04:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:04:35,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:04:35,295 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-23 16:04:35,296 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-23 16:04:35,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-23 16:04:35,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:04:35 BoogieIcfgContainer [2020-11-23 16:04:35,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-23 16:04:35,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-23 16:04:35,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-23 16:04:35,342 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-23 16:04:35,343 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:04:34" (3/4) ... [2020-11-23 16:04:35,348 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-23 16:04:35,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-23 16:04:35,355 INFO L168 Benchmark]: Toolchain (without parser) took 1110.19 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 27.4 MB in the beginning and 33.6 MB in the end (delta: -6.2 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2020-11-23 16:04:35,359 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 50.3 MB. Free memory is still 34.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:04:35,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.88 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 31.0 MB in the end (delta: -4.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-11-23 16:04:35,363 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.36 ms. Allocated memory is still 50.3 MB. Free memory was 31.0 MB in the beginning and 29.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:04:35,365 INFO L168 Benchmark]: Boogie Preprocessor took 25.53 ms. Allocated memory is still 50.3 MB. Free memory was 29.6 MB in the beginning and 28.7 MB in the end (delta: 934.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:04:35,366 INFO L168 Benchmark]: RCFGBuilder took 320.37 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 28.5 MB in the beginning and 46.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-11-23 16:04:35,368 INFO L168 Benchmark]: TraceAbstraction took 372.23 ms. Allocated memory is still 65.0 MB. Free memory was 46.2 MB in the beginning and 34.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-23 16:04:35,370 INFO L168 Benchmark]: Witness Printer took 8.01 ms. Allocated memory is still 65.0 MB. Free memory was 34.1 MB in the beginning and 33.6 MB in the end (delta: 517.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:04:35,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 50.3 MB. Free memory is still 34.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.88 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 31.0 MB in the end (delta: -4.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.36 ms. Allocated memory is still 50.3 MB. Free memory was 31.0 MB in the beginning and 29.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.53 ms. Allocated memory is still 50.3 MB. Free memory was 29.6 MB in the beginning and 28.7 MB in the end (delta: 934.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 320.37 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 28.5 MB in the beginning and 46.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 372.23 ms. Allocated memory is still 65.0 MB. Free memory was 46.2 MB in the beginning and 34.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 8.01 ms. Allocated memory is still 65.0 MB. Free memory was 34.1 MB in the beginning and 33.6 MB in the end (delta: 517.5 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 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L9] double main__x = 1.0; [L10] double main__x1 = main__x / 2.5; VAL [__return_main=0] [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L4] __assert_fail("0", "Double_div.i.p+cfa-reducer.c", 4, "reach_error") VAL [__return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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=10occurred 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, 5 NumberOfCodeBlocks, 5 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-cbb939d [2020-11-23 16:04:38,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 16:04:38,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 16:04:38,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 16:04:38,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 16:04:38,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 16:04:38,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 16:04:38,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 16:04:38,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 16:04:38,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 16:04:38,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 16:04:38,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 16:04:38,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 16:04:38,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 16:04:38,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 16:04:38,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 16:04:38,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 16:04:38,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 16:04:38,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 16:04:38,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 16:04:38,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 16:04:38,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 16:04:38,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 16:04:38,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 16:04:38,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 16:04:38,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 16:04:38,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 16:04:38,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 16:04:38,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 16:04:38,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 16:04:38,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 16:04:38,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 16:04:38,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 16:04:38,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 16:04:38,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 16:04:38,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 16:04:38,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 16:04:38,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 16:04:38,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 16:04:38,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 16:04:38,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 16:04:38,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-23 16:04:38,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 16:04:38,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 16:04:38,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 16:04:38,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 16:04:38,321 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 16:04:38,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 16:04:38,322 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 16:04:38,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 16:04:38,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 16:04:38,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 16:04:38,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 16:04:38,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 16:04:38,324 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-23 16:04:38,325 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-23 16:04:38,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 16:04:38,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 16:04:38,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 16:04:38,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 16:04:38,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 16:04:38,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 16:04:38,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 16:04:38,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 16:04:38,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 16:04:38,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 16:04:38,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 16:04:38,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 16:04:38,328 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-23 16:04:38,328 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-23 16:04:38,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 16:04:38,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 16:04:38,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-23 16:04:38,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb5ab7eb36d10dfdf42ecc1671ac3f1599a6bed2 [2020-11-23 16:04:38,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 16:04:38,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 16:04:38,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 16:04:38,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 16:04:38,882 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 16:04:38,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2020-11-23 16:04:38,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e32d8330/458d4afa8f4244e78a55b591f3a12d94/FLAG040daab21 [2020-11-23 16:04:39,607 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 16:04:39,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2020-11-23 16:04:39,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e32d8330/458d4afa8f4244e78a55b591f3a12d94/FLAG040daab21 [2020-11-23 16:04:39,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e32d8330/458d4afa8f4244e78a55b591f3a12d94 [2020-11-23 16:04:39,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 16:04:39,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 16:04:39,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 16:04:39,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 16:04:39,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 16:04:39,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:04:39" (1/1) ... [2020-11-23 16:04:39,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296d436c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:39, skipping insertion in model container [2020-11-23 16:04:39,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:04:39" (1/1) ... [2020-11-23 16:04:39,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 16:04:40,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-23 16:04:40,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:04:40,262 INFO L203 MainTranslator]: Completed pre-run [2020-11-23 16:04:40,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:04:40,305 INFO L208 MainTranslator]: Completed translation [2020-11-23 16:04:40,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:40 WrapperNode [2020-11-23 16:04:40,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 16:04:40,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 16:04:40,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 16:04:40,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 16:04:40,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:40" (1/1) ... [2020-11-23 16:04:40,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:40" (1/1) ... [2020-11-23 16:04:40,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 16:04:40,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 16:04:40,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 16:04:40,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 16:04:40,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:40" (1/1) ... [2020-11-23 16:04:40,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:40" (1/1) ... [2020-11-23 16:04:40,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:40" (1/1) ... [2020-11-23 16:04:40,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:40" (1/1) ... [2020-11-23 16:04:40,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:40" (1/1) ... [2020-11-23 16:04:40,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:40" (1/1) ... [2020-11-23 16:04:40,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:40" (1/1) ... [2020-11-23 16:04:40,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 16:04:40,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 16:04:40,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 16:04:40,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 16:04:40,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:40" (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 [2020-11-23 16:04:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 16:04:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 16:04:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-23 16:04:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 16:04:43,368 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 16:04:43,368 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-23 16:04:43,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:04:43 BoogieIcfgContainer [2020-11-23 16:04:43,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 16:04:43,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 16:04:43,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 16:04:43,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 16:04:43,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:04:39" (1/3) ... [2020-11-23 16:04:43,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bcdce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:04:43, skipping insertion in model container [2020-11-23 16:04:43,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:40" (2/3) ... [2020-11-23 16:04:43,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bcdce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:04:43, skipping insertion in model container [2020-11-23 16:04:43,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:04:43" (3/3) ... [2020-11-23 16:04:43,385 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div.i.p+cfa-reducer.c [2020-11-23 16:04:43,406 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 16:04:43,410 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 16:04:43,422 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 16:04:43,448 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 16:04:43,449 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 16:04:43,449 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 16:04:43,449 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 16:04:43,450 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 16:04:43,450 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 16:04:43,450 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 16:04:43,450 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 16:04:43,463 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-23 16:04:43,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-23 16:04:43,468 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:04:43,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-23 16:04:43,469 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:04:43,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:04:43,475 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2020-11-23 16:04:43,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:04:43,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901423024] [2020-11-23 16:04:43,489 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 [2020-11-23 16:04:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:04:43,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-23 16:04:43,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:04:46,659 WARN L194 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 11 [2020-11-23 16:04:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:04:46,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 16:04:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:04:48,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901423024] [2020-11-23 16:04:48,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-23 16:04:48,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-23 16:04:48,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683658839] [2020-11-23 16:04:48,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-23 16:04:48,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 16:04:48,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-23 16:04:48,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-23 16:04:48,710 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 5 states. [2020-11-23 16:04:53,473 WARN L194 SmtUtils]: Spent 3.68 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-23 16:05:03,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:05:03,806 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2020-11-23 16:05:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-23 16:05:03,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-23 16:05:03,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:05:03,831 INFO L225 Difference]: With dead ends: 18 [2020-11-23 16:05:03,831 INFO L226 Difference]: Without dead ends: 8 [2020-11-23 16:05:03,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=18, Invalid=22, Unknown=2, NotChecked=0, Total=42 [2020-11-23 16:05:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-23 16:05:03,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-23 16:05:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-23 16:05:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-23 16:05:03,881 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2020-11-23 16:05:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:05:03,881 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-23 16:05:03,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-23 16:05:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-23 16:05:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-23 16:05:03,883 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:05:03,884 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-11-23 16:05:04,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-23 16:05:04,100 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:05:04,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:05:04,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1805796550, now seen corresponding path program 1 times [2020-11-23 16:05:04,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:05:04,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107929953] [2020-11-23 16:05:04,104 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 [2020-11-23 16:05:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:05:04,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-23 16:05:04,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:05:07,119 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-11-23 16:05:11,684 WARN L194 SmtUtils]: Spent 3.22 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-23 16:05:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-11-23 16:05:11,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 16:05:29,491 WARN L194 SmtUtils]: Spent 2.60 s on a formula simplification that was a NOOP. DAG size: 7 [2020-11-23 16:05:32,000 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-11-23 16:05:34,518 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-11-23 16:05:37,038 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-11-23 16:05:39,467 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2020-11-23 16:05:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-11-23 16:05:39,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107929953] [2020-11-23 16:05:39,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-23 16:05:39,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-23 16:05:39,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465784770] [2020-11-23 16:05:39,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-23 16:05:39,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 16:05:39,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-23 16:05:39,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=25, Unknown=8, NotChecked=36, Total=90 [2020-11-23 16:05:39,473 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 10 states. [2020-11-23 16:05:42,819 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-11-23 16:05:45,347 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)) (not (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0))) (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1))))) is different from true [2020-11-23 16:05:50,371 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)))) is different from true [2020-11-23 16:06:02,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:06:02,692 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-11-23 16:06:02,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-23 16:06:02,940 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2020-11-23 16:06:02,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:06:02,941 INFO L225 Difference]: With dead ends: 13 [2020-11-23 16:06:02,941 INFO L226 Difference]: Without dead ends: 10 [2020-11-23 16:06:02,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 44.9s TimeCoverageRelationStatistics Valid=27, Invalid=28, Unknown=11, NotChecked=90, Total=156 [2020-11-23 16:06:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-23 16:06:02,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-23 16:06:02,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-23 16:06:02,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-23 16:06:02,947 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2020-11-23 16:06:02,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:06:02,947 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-23 16:06:02,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-23 16:06:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-23 16:06:02,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-23 16:06:02,948 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:06:02,949 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2020-11-23 16:06:03,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-23 16:06:03,159 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:06:03,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:06:03,160 INFO L82 PathProgramCache]: Analyzing trace with hash 201697478, now seen corresponding path program 2 times [2020-11-23 16:06:03,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:06:03,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350508365] [2020-11-23 16:06:03,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-11-23 16:06:04,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-23 16:06:04,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-23 16:06:04,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-23 16:06:04,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:06:06,723 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-11-23 16:06:09,440 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)))) is different from true [2020-11-23 16:06:11,552 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~main__x1~0)) is different from true [2020-11-23 16:06:13,992 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~main__x~0) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse0)))) is different from true [2020-11-23 16:06:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2020-11-23 16:06:14,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 16:06:17,122 WARN L860 $PredicateComparison]: unable to prove that (or (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~main__x1~0))) is different from true [2020-11-23 16:06:19,645 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-11-23 16:06:24,383 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-11-23 16:06:27,158 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-11-23 16:06:30,520 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-11-23 16:06:33,705 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-11-23 16:06:36,735 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-11-23 16:06:39,771 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-11-23 16:06:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2020-11-23 16:06:39,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350508365] [2020-11-23 16:06:39,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-23 16:06:39,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2020-11-23 16:06:39,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817368076] [2020-11-23 16:06:39,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-23 16:06:39,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 16:06:39,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-23 16:06:39,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=26, Unknown=12, NotChecked=144, Total=210 [2020-11-23 16:06:39,776 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 15 states. [2020-11-23 16:06:42,865 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-11-23 16:06:45,919 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from false [2020-11-23 16:06:49,219 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from true [2020-11-23 16:06:52,590 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2020-11-23 16:06:55,109 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))))) is different from true [2020-11-23 16:06:58,813 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (or (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0))) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~main__x1~0))) is different from true [2020-11-23 16:07:00,866 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~main__x~0) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse0)) (or (fp.eq c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0))))) is different from true [2020-11-23 16:07:03,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:07:03,826 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-23 16:07:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-23 16:07:03,827 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 9 [2020-11-23 16:07:03,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:07:03,828 INFO L225 Difference]: With dead ends: 14 [2020-11-23 16:07:03,828 INFO L226 Difference]: Without dead ends: 11 [2020-11-23 16:07:03,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 56.5s TimeCoverageRelationStatistics Valid=40, Invalid=31, Unknown=19, NotChecked=330, Total=420 [2020-11-23 16:07:03,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-23 16:07:03,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-23 16:07:03,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-23 16:07:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-23 16:07:03,833 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-11-23 16:07:03,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:07:03,833 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-23 16:07:03,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-23 16:07:03,834 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-23 16:07:03,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-23 16:07:03,834 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:07:03,834 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1] [2020-11-23 16:07:04,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-23 16:07:04,037 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:07:04,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:07:04,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1957592038, now seen corresponding path program 3 times [2020-11-23 16:07:04,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:07:04,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868531256] [2020-11-23 16:07:04,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-11-23 16:07:05,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-23 16:07:05,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-23 16:07:05,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-23 16:07:05,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:07:22,367 WARN L194 SmtUtils]: Spent 11.21 s on a formula simplification that was a NOOP. DAG size: 10 [2020-11-23 16:07:24,906 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (= .cse0 c_ULTIMATE.start_main_~main__x~0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_16)))))) is different from false [2020-11-23 16:07:27,831 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (= .cse0 c_ULTIMATE.start_main_~main__x~0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_16)))))) is different from true [2020-11-23 16:07:27,841 INFO L615 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-23 16:07:40,821 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse1))) (and (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_16)))))) (= (bvadd c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv4294967295 32)) (_ bv0 32))) (and (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse3))) (and (not (fp.eq .cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2) (not (fp.eq .cse2 v_ULTIMATE.start_main_~main__x~0_16)))))) (= c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv0 32)))) is different from false [2020-11-23 16:07:48,407 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_16)))))) is different from false [2020-11-23 16:07:50,851 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_16)))))) is different from true [2020-11-23 16:07:50,852 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 5 not checked. [2020-11-23 16:07:50,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 16:08:28,100 WARN L194 SmtUtils]: Spent 13.47 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-23 16:08:30,622 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) is different from false [2020-11-23 16:08:33,134 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) is different from true [2020-11-23 16:08:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 6 trivial. 8 not checked. [2020-11-23 16:08:33,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868531256] [2020-11-23 16:08:33,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-23 16:08:33,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-11-23 16:08:33,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480514865] [2020-11-23 16:08:33,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-23 16:08:33,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 16:08:33,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-23 16:08:33,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=16, NotChecked=52, Total=110 [2020-11-23 16:08:33,152 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 11 states. [2020-11-23 16:08:39,225 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))))) is different from false [2020-11-23 16:08:41,744 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))))) is different from true [2020-11-23 16:08:44,242 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (or (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse0)) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse2))) (or (fp.eq .cse1 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse2) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))))) is different from false [2020-11-23 16:08:47,004 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (or (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse0)) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse2))) (or (fp.eq .cse1 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse2) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))))) is different from true [2020-11-23 16:08:49,801 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse2 (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0))) (and (or (fp.eq c_ULTIMATE.start_main_~main__x1~0 .cse0) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) c_ULTIMATE.start_main_~main__x1~0)) .cse2) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse1)) (or (fp.eq c_ULTIMATE.start_main_~main__x~0 .cse0) (not .cse2)) (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse3 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (= .cse3 c_ULTIMATE.start_main_~main__x~0) (not (fp.eq .cse3 v_ULTIMATE.start_main_~main__x~0_16))))) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse4 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse5))) (or (fp.eq .cse4 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse5) .cse4)) (fp.eq .cse4 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))))) is different from false [2020-11-23 16:08:52,560 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse2 (fp.eq c_ULTIMATE.start_main_~main__x1~0 c_ULTIMATE.start_main_~main__x~0))) (and (or (fp.eq c_ULTIMATE.start_main_~main__x1~0 .cse0) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) c_ULTIMATE.start_main_~main__x1~0)) .cse2) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse1)) (or (fp.eq c_ULTIMATE.start_main_~main__x~0 .cse0) (not .cse2)) (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse3 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_16 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))))) (and (= .cse3 c_ULTIMATE.start_main_~main__x~0) (not (fp.eq .cse3 v_ULTIMATE.start_main_~main__x~0_16))))) (forall ((v_ULTIMATE.start_main_~main__x~0_18 (_ FloatingPoint 11 53))) (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse4 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~main__x~0_18 .cse5))) (or (fp.eq .cse4 v_ULTIMATE.start_main_~main__x~0_18) (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse5) .cse4)) (fp.eq .cse4 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))))) is different from true [2020-11-23 16:08:55,108 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv0 32)))) (and (not .cse0) (or (and (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse1 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse2))) (and (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse2) .cse1) (not (fp.eq .cse1 v_ULTIMATE.start_main_~main__x~0_16)))))) (= (bvadd c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0 (_ bv4294967295 32)) (_ bv0 32))) (and (exists ((v_ULTIMATE.start_main_~main__x~0_16 (_ FloatingPoint 11 53))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse3 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~main__x~0_16 .cse4))) (and (not (fp.eq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse3 .cse4) .cse3) (not (fp.eq .cse3 v_ULTIMATE.start_main_~main__x~0_16)))))) .cse0)))) is different from false [2020-11-23 16:08:55,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:08:55,118 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-23 16:08:55,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-23 16:08:55,118 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-11-23 16:08:55,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:08:55,119 INFO L225 Difference]: With dead ends: 11 [2020-11-23 16:08:55,119 INFO L226 Difference]: Without dead ends: 0 [2020-11-23 16:08:55,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 91.5s TimeCoverageRelationStatistics Valid=28, Invalid=23, Unknown=23, NotChecked=136, Total=210 [2020-11-23 16:08:55,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-23 16:08:55,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-23 16:08:55,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-23 16:08:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-23 16:08:55,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-23 16:08:55,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:08:55,121 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-23 16:08:55,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-23 16:08:55,121 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-23 16:08:55,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-23 16:08:55,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-23 16:08:55,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-23 16:09:53,245 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-23 16:09:53,246 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.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:393) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeCFGHoareAnnotation(BasicCegarLoop.java:1052) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:176) 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) ... 34 more [2020-11-23 16:09:53,253 INFO L168 Benchmark]: Toolchain (without parser) took 313299.04 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.0 MB in the beginning and 19.4 MB in the end (delta: 7.6 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2020-11-23 16:09:53,253 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 50.3 MB. Free memory is still 27.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:09:53,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.42 ms. Allocated memory is still 50.3 MB. Free memory was 26.3 MB in the beginning and 30.0 MB in the end (delta: -3.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-11-23 16:09:53,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.95 ms. Allocated memory is still 50.3 MB. Free memory was 30.0 MB in the beginning and 28.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:09:53,256 INFO L168 Benchmark]: Boogie Preprocessor took 27.50 ms. Allocated memory is still 50.3 MB. Free memory was 28.5 MB in the beginning and 27.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:09:53,257 INFO L168 Benchmark]: RCFGBuilder took 2996.32 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.5 MB in the beginning and 38.4 MB in the end (delta: -10.9 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-11-23 16:09:53,258 INFO L168 Benchmark]: TraceAbstraction took 309875.58 ms. Allocated memory is still 60.8 MB. Free memory was 37.9 MB in the beginning and 19.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2020-11-23 16:09:53,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 50.3 MB. Free memory is still 27.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 343.42 ms. Allocated memory is still 50.3 MB. Free memory was 26.3 MB in the beginning and 30.0 MB in the end (delta: -3.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.95 ms. Allocated memory is still 50.3 MB. Free memory was 30.0 MB in the beginning and 28.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.50 ms. Allocated memory is still 50.3 MB. Free memory was 28.5 MB in the beginning and 27.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2996.32 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.5 MB in the beginning and 38.4 MB in the end (delta: -10.9 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 309875.58 ms. Allocated memory is still 60.8 MB. Free memory was 37.9 MB in the beginning and 19.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 17.6 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...