./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e1a00cf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.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 588c8ae05db5b455b7a642d0c86b0e222c46f03c ................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.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 588c8ae05db5b455b7a642d0c86b0e222c46f03c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-0e1a00c [2020-11-29 15:54:44,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 15:54:44,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 15:54:44,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 15:54:44,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 15:54:44,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 15:54:44,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 15:54:44,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 15:54:44,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 15:54:44,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 15:54:44,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 15:54:44,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 15:54:44,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 15:54:44,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 15:54:44,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 15:54:44,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 15:54:44,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 15:54:44,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 15:54:44,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 15:54:44,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 15:54:44,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 15:54:44,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 15:54:44,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 15:54:44,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 15:54:44,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 15:54:44,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 15:54:44,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 15:54:44,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 15:54:44,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 15:54:44,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 15:54:44,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 15:54:44,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 15:54:44,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 15:54:44,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 15:54:44,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 15:54:44,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 15:54:44,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 15:54:44,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 15:54:44,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 15:54:44,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 15:54:44,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 15:54:44,551 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 15:54:44,605 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 15:54:44,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 15:54:44,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 15:54:44,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 15:54:44,611 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 15:54:44,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 15:54:44,611 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 15:54:44,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 15:54:44,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 15:54:44,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 15:54:44,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 15:54:44,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 15:54:44,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 15:54:44,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 15:54:44,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 15:54:44,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 15:54:44,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 15:54:44,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 15:54:44,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 15:54:44,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 15:54:44,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 15:54:44,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:54:44,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 15:54:44,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 15:54:44,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 15:54:44,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 15:54:44,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 15:54:44,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 15:54:44,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 15:54:44,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588c8ae05db5b455b7a642d0c86b0e222c46f03c [2020-11-29 15:54:45,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 15:54:45,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 15:54:45,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 15:54:45,112 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 15:54:45,114 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 15:54:45,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2020-11-29 15:54:45,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7262ce2a/bdd4c331d376473caa384576e38e90c7/FLAG1706d2da7 [2020-11-29 15:54:45,793 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 15:54:45,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2020-11-29 15:54:45,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7262ce2a/bdd4c331d376473caa384576e38e90c7/FLAG1706d2da7 [2020-11-29 15:54:46,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7262ce2a/bdd4c331d376473caa384576e38e90c7 [2020-11-29 15:54:46,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 15:54:46,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 15:54:46,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 15:54:46,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 15:54:46,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 15:54:46,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:54:46" (1/1) ... [2020-11-29 15:54:46,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b04d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:46, skipping insertion in model container [2020-11-29 15:54:46,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:54:46" (1/1) ... [2020-11-29 15:54:46,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 15:54:46,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 15:54:46,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:54:46,509 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 15:54:46,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:54:46,567 INFO L208 MainTranslator]: Completed translation [2020-11-29 15:54:46,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:46 WrapperNode [2020-11-29 15:54:46,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 15:54:46,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 15:54:46,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 15:54:46,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 15:54:46,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:46" (1/1) ... [2020-11-29 15:54:46,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:46" (1/1) ... [2020-11-29 15:54:46,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 15:54:46,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 15:54:46,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 15:54:46,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 15:54:46,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:46" (1/1) ... [2020-11-29 15:54:46,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:46" (1/1) ... [2020-11-29 15:54:46,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:46" (1/1) ... [2020-11-29 15:54:46,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:46" (1/1) ... [2020-11-29 15:54:46,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:46" (1/1) ... [2020-11-29 15:54:46,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:46" (1/1) ... [2020-11-29 15:54:46,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:46" (1/1) ... [2020-11-29 15:54:46,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 15:54:46,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 15:54:46,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 15:54:46,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 15:54:46,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:54:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 15:54:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 15:54:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 15:54:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 15:54:46,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 15:54:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 15:54:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 15:54:47,153 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 15:54:47,154 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 15:54:47,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:54:47 BoogieIcfgContainer [2020-11-29 15:54:47,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 15:54:47,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 15:54:47,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 15:54:47,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 15:54:47,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:54:46" (1/3) ... [2020-11-29 15:54:47,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47428418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:54:47, skipping insertion in model container [2020-11-29 15:54:47,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:46" (2/3) ... [2020-11-29 15:54:47,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47428418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:54:47, skipping insertion in model container [2020-11-29 15:54:47,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:54:47" (3/3) ... [2020-11-29 15:54:47,166 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2020-11-29 15:54:47,184 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 15:54:47,189 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 15:54:47,204 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 15:54:47,245 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 15:54:47,246 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 15:54:47,246 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 15:54:47,246 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 15:54:47,247 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 15:54:47,247 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 15:54:47,247 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 15:54:47,248 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 15:54:47,267 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 15:54:47,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 15:54:47,274 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:54:47,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:54:47,276 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:54:47,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:54:47,288 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-29 15:54:47,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:54:47,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662059019] [2020-11-29 15:54:47,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:54:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:54:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:47,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662059019] [2020-11-29 15:54:47,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:54:47,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 15:54:47,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883965966] [2020-11-29 15:54:47,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 15:54:47,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 15:54:47,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 15:54:47,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:54:47,549 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-29 15:54:47,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:54:47,573 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-29 15:54:47,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 15:54:47,575 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 15:54:47,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:54:47,587 INFO L225 Difference]: With dead ends: 63 [2020-11-29 15:54:47,588 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 15:54:47,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:54:47,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 15:54:47,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 15:54:47,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 15:54:47,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-29 15:54:47,638 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-29 15:54:47,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:54:47,638 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-29 15:54:47,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 15:54:47,639 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-29 15:54:47,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 15:54:47,640 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:54:47,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:54:47,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 15:54:47,641 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:54:47,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:54:47,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-29 15:54:47,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:54:47,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236433322] [2020-11-29 15:54:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:54:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:54:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:47,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236433322] [2020-11-29 15:54:47,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:54:47,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 15:54:47,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899216312] [2020-11-29 15:54:47,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 15:54:47,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 15:54:47,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 15:54:47,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 15:54:47,826 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-11-29 15:54:47,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:54:47,902 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-11-29 15:54:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 15:54:47,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 15:54:47,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:54:47,906 INFO L225 Difference]: With dead ends: 53 [2020-11-29 15:54:47,908 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 15:54:47,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 15:54:47,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 15:54:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-11-29 15:54:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 15:54:47,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 15:54:47,924 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-29 15:54:47,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:54:47,926 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 15:54:47,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 15:54:47,926 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 15:54:47,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 15:54:47,928 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:54:47,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:54:47,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 15:54:47,931 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:54:47,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:54:47,934 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-11-29 15:54:47,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:54:47,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707852798] [2020-11-29 15:54:47,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:54:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:54:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:48,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707852798] [2020-11-29 15:54:48,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:54:48,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 15:54:48,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324738494] [2020-11-29 15:54:48,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 15:54:48,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 15:54:48,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 15:54:48,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 15:54:48,015 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-29 15:54:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:54:48,073 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-11-29 15:54:48,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 15:54:48,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 15:54:48,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:54:48,077 INFO L225 Difference]: With dead ends: 55 [2020-11-29 15:54:48,078 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 15:54:48,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 15:54:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 15:54:48,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-11-29 15:54:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 15:54:48,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 15:54:48,091 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-11-29 15:54:48,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:54:48,093 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 15:54:48,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 15:54:48,093 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 15:54:48,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 15:54:48,096 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:54:48,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:54:48,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 15:54:48,098 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:54:48,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:54:48,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-11-29 15:54:48,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:54:48,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382027381] [2020-11-29 15:54:48,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:54:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:54:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:48,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382027381] [2020-11-29 15:54:48,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:54:48,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 15:54:48,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092720254] [2020-11-29 15:54:48,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 15:54:48,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 15:54:48,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 15:54:48,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 15:54:48,217 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-29 15:54:48,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:54:48,274 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-11-29 15:54:48,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 15:54:48,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 15:54:48,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:54:48,278 INFO L225 Difference]: With dead ends: 57 [2020-11-29 15:54:48,278 INFO L226 Difference]: Without dead ends: 48 [2020-11-29 15:54:48,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 15:54:48,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-29 15:54:48,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-11-29 15:54:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 15:54:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 15:54:48,290 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-11-29 15:54:48,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:54:48,290 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 15:54:48,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 15:54:48,290 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 15:54:48,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 15:54:48,292 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:54:48,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:54:48,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 15:54:48,294 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:54:48,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:54:48,296 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-11-29 15:54:48,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:54:48,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431123080] [2020-11-29 15:54:48,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:54:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:54:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:48,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431123080] [2020-11-29 15:54:48,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:54:48,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 15:54:48,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150613804] [2020-11-29 15:54:48,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 15:54:48,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 15:54:48,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 15:54:48,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 15:54:48,393 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-29 15:54:48,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:54:48,471 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-11-29 15:54:48,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 15:54:48,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 15:54:48,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:54:48,475 INFO L225 Difference]: With dead ends: 55 [2020-11-29 15:54:48,476 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 15:54:48,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 15:54:48,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 15:54:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-11-29 15:54:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 15:54:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 15:54:48,486 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-11-29 15:54:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:54:48,487 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 15:54:48,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 15:54:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 15:54:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 15:54:48,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:54:48,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:54:48,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 15:54:48,489 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:54:48,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:54:48,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-29 15:54:48,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 15:54:48,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146716795] [2020-11-29 15:54:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 15:54:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 15:54:48,522 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 15:54:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 15:54:48,542 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 15:54:48,573 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 15:54:48,573 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 15:54:48,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 15:54:48,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:54:48 BoogieIcfgContainer [2020-11-29 15:54:48,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 15:54:48,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 15:54:48,611 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 15:54:48,611 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 15:54:48,612 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:54:47" (3/4) ... [2020-11-29 15:54:48,615 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 15:54:48,616 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 15:54:48,619 INFO L168 Benchmark]: Toolchain (without parser) took 2427.10 ms. Allocated memory was 52.4 MB in the beginning and 79.7 MB in the end (delta: 27.3 MB). Free memory was 29.1 MB in the beginning and 56.1 MB in the end (delta: -27.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 16.1 GB. [2020-11-29 15:54:48,620 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 52.4 MB. Free memory was 34.1 MB in the beginning and 34.0 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:54:48,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.76 ms. Allocated memory is still 52.4 MB. Free memory was 28.5 MB in the beginning and 31.6 MB in the end (delta: -3.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-11-29 15:54:48,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.95 ms. Allocated memory is still 52.4 MB. Free memory was 31.6 MB in the beginning and 30.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:54:48,622 INFO L168 Benchmark]: Boogie Preprocessor took 34.42 ms. Allocated memory is still 52.4 MB. Free memory was 29.8 MB in the beginning and 28.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:54:48,624 INFO L168 Benchmark]: RCFGBuilder took 464.41 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 28.4 MB in the beginning and 35.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-11-29 15:54:48,624 INFO L168 Benchmark]: TraceAbstraction took 1451.48 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 34.5 MB in the beginning and 56.6 MB in the end (delta: -22.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:54:48,625 INFO L168 Benchmark]: Witness Printer took 5.60 ms. Allocated memory is still 79.7 MB. Free memory was 56.6 MB in the beginning and 56.1 MB in the end (delta: 470.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:54:48,630 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 52.4 MB. Free memory was 34.1 MB in the beginning and 34.0 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 368.76 ms. Allocated memory is still 52.4 MB. Free memory was 28.5 MB in the beginning and 31.6 MB in the end (delta: -3.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.95 ms. Allocated memory is still 52.4 MB. Free memory was 31.6 MB in the beginning and 30.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.42 ms. Allocated memory is still 52.4 MB. Free memory was 29.8 MB in the beginning and 28.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 464.41 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 28.4 MB in the beginning and 35.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1451.48 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 34.5 MB in the beginning and 56.6 MB in the end (delta: -22.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.60 ms. Allocated memory is still 79.7 MB. Free memory was 56.6 MB in the beginning and 56.1 MB in the end (delta: 470.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 71, overapproximation of someUnaryFLOAToperation at line 67. Possible FailurePath: [L66] float x = 0.0f; [L67] float y = -0.0f; [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L3] __assert_fail("0", "float_req_bl_1232a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-0e1a00c [2020-11-29 15:54:51,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 15:54:51,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 15:54:51,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 15:54:51,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 15:54:51,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 15:54:51,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 15:54:51,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 15:54:51,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 15:54:51,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 15:54:51,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 15:54:51,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 15:54:51,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 15:54:51,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 15:54:51,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 15:54:51,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 15:54:51,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 15:54:51,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 15:54:51,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 15:54:51,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 15:54:51,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 15:54:51,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 15:54:51,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 15:54:51,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 15:54:51,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 15:54:51,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 15:54:51,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 15:54:51,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 15:54:51,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 15:54:51,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 15:54:51,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 15:54:51,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 15:54:51,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 15:54:51,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 15:54:51,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 15:54:51,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 15:54:51,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 15:54:51,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 15:54:51,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 15:54:51,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 15:54:51,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 15:54:51,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 15:54:51,344 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 15:54:51,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 15:54:51,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 15:54:51,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 15:54:51,348 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 15:54:51,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 15:54:51,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 15:54:51,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 15:54:51,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 15:54:51,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 15:54:51,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 15:54:51,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 15:54:51,350 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 15:54:51,350 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 15:54:51,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 15:54:51,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 15:54:51,351 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 15:54:51,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 15:54:51,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 15:54:51,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 15:54:51,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 15:54:51,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 15:54:51,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:54:51,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 15:54:51,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 15:54:51,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 15:54:51,354 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 15:54:51,354 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 15:54:51,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 15:54:51,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 15:54:51,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 15:54:51,355 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588c8ae05db5b455b7a642d0c86b0e222c46f03c [2020-11-29 15:54:51,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 15:54:51,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 15:54:51,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 15:54:51,775 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 15:54:51,775 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 15:54:51,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2020-11-29 15:54:51,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362aa1bb2/0523cd93ea0b42d8aecc97dbb1c318c1/FLAGad70db38d [2020-11-29 15:54:52,372 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 15:54:52,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2020-11-29 15:54:52,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362aa1bb2/0523cd93ea0b42d8aecc97dbb1c318c1/FLAGad70db38d [2020-11-29 15:54:52,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362aa1bb2/0523cd93ea0b42d8aecc97dbb1c318c1 [2020-11-29 15:54:52,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 15:54:52,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 15:54:52,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 15:54:52,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 15:54:52,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 15:54:52,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:54:52" (1/1) ... [2020-11-29 15:54:52,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e136978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:52, skipping insertion in model container [2020-11-29 15:54:52,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:54:52" (1/1) ... [2020-11-29 15:54:52,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 15:54:52,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 15:54:52,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:54:53,000 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 15:54:53,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 15:54:53,051 INFO L208 MainTranslator]: Completed translation [2020-11-29 15:54:53,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:53 WrapperNode [2020-11-29 15:54:53,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 15:54:53,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 15:54:53,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 15:54:53,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 15:54:53,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:53" (1/1) ... [2020-11-29 15:54:53,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:53" (1/1) ... [2020-11-29 15:54:53,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 15:54:53,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 15:54:53,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 15:54:53,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 15:54:53,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:53" (1/1) ... [2020-11-29 15:54:53,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:53" (1/1) ... [2020-11-29 15:54:53,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:53" (1/1) ... [2020-11-29 15:54:53,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:53" (1/1) ... [2020-11-29 15:54:53,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:53" (1/1) ... [2020-11-29 15:54:53,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:53" (1/1) ... [2020-11-29 15:54:53,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:53" (1/1) ... [2020-11-29 15:54:53,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 15:54:53,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 15:54:53,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 15:54:53,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 15:54:53,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 15:54:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 15:54:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 15:54:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 15:54:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 15:54:53,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 15:54:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 15:54:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 15:54:53,611 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 15:54:53,611 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 15:54:53,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:54:53 BoogieIcfgContainer [2020-11-29 15:54:53,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 15:54:53,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 15:54:53,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 15:54:53,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 15:54:53,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:54:52" (1/3) ... [2020-11-29 15:54:53,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42be55ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:54:53, skipping insertion in model container [2020-11-29 15:54:53,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:54:53" (2/3) ... [2020-11-29 15:54:53,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42be55ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:54:53, skipping insertion in model container [2020-11-29 15:54:53,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:54:53" (3/3) ... [2020-11-29 15:54:53,626 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2020-11-29 15:54:53,645 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 15:54:53,650 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 15:54:53,666 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 15:54:53,737 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 15:54:53,737 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 15:54:53,738 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 15:54:53,738 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 15:54:53,738 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 15:54:53,738 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 15:54:53,741 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 15:54:53,741 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 15:54:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 15:54:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 15:54:53,785 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:54:53,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:54:53,786 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:54:53,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:54:53,792 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-29 15:54:53,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:54:53,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715868512] [2020-11-29 15:54:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 15:54:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:54:53,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 15:54:53,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:54:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:53,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:54:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:53,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715868512] [2020-11-29 15:54:53,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:54:53,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 15:54:53,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712410462] [2020-11-29 15:54:53,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 15:54:53,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:54:53,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 15:54:53,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:54:53,981 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-29 15:54:54,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:54:54,004 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-29 15:54:54,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 15:54:54,006 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 15:54:54,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:54:54,023 INFO L225 Difference]: With dead ends: 63 [2020-11-29 15:54:54,024 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 15:54:54,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 15:54:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 15:54:54,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 15:54:54,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 15:54:54,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-29 15:54:54,072 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-29 15:54:54,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:54:54,073 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-29 15:54:54,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 15:54:54,073 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-29 15:54:54,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 15:54:54,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:54:54,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:54:54,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 15:54:54,293 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:54:54,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:54:54,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-29 15:54:54,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:54:54,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953368522] [2020-11-29 15:54:54,306 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 [2020-11-29 15:54:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:54:54,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 15:54:54,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:54:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:54,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:54:54,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:54,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953368522] [2020-11-29 15:54:54,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:54:54,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 15:54:54,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553360200] [2020-11-29 15:54:54,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 15:54:54,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:54:54,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 15:54:54,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 15:54:54,520 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-29 15:54:54,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:54:54,631 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-29 15:54:54,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 15:54:54,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 15:54:54,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:54:54,633 INFO L225 Difference]: With dead ends: 68 [2020-11-29 15:54:54,633 INFO L226 Difference]: Without dead ends: 59 [2020-11-29 15:54:54,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 15:54:54,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-29 15:54:54,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-29 15:54:54,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 15:54:54,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 15:54:54,644 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-29 15:54:54,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:54:54,644 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 15:54:54,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 15:54:54,645 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 15:54:54,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 15:54:54,645 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:54:54,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:54:54,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 15:54:54,860 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:54:54,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:54:54,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-29 15:54:54,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:54:54,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445949283] [2020-11-29 15:54:54,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 15:54:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:54:54,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 15:54:54,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:54:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:54,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:54:55,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:55,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445949283] [2020-11-29 15:54:55,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:54:55,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-29 15:54:55,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387091365] [2020-11-29 15:54:55,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 15:54:55,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:54:55,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 15:54:55,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 15:54:55,049 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-29 15:54:55,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:54:55,106 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-29 15:54:55,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 15:54:55,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 15:54:55,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:54:55,108 INFO L225 Difference]: With dead ends: 52 [2020-11-29 15:54:55,108 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 15:54:55,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 15:54:55,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 15:54:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-29 15:54:55,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 15:54:55,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-11-29 15:54:55,114 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2020-11-29 15:54:55,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:54:55,114 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-11-29 15:54:55,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 15:54:55,115 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-11-29 15:54:55,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 15:54:55,116 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:54:55,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:54:55,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 15:54:55,330 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:54:55,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:54:55,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-29 15:54:55,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:54:55,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250302121] [2020-11-29 15:54:55,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 15:54:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:54:55,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 15:54:55,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:54:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:55,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:54:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:55,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250302121] [2020-11-29 15:54:55,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:54:55,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 15:54:55,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452035962] [2020-11-29 15:54:55,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 15:54:55,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:54:55,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 15:54:55,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 15:54:55,490 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2020-11-29 15:54:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:54:55,567 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-11-29 15:54:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 15:54:55,568 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-29 15:54:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:54:55,572 INFO L225 Difference]: With dead ends: 61 [2020-11-29 15:54:55,572 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 15:54:55,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 15:54:55,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 15:54:55,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2020-11-29 15:54:55,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 15:54:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-11-29 15:54:55,586 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-11-29 15:54:55,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:54:55,586 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-11-29 15:54:55,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 15:54:55,586 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-11-29 15:54:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 15:54:55,589 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:54:55,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:54:55,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 15:54:55,806 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:54:55,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:54:55,807 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-29 15:54:55,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:54:55,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638948565] [2020-11-29 15:54:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 15:54:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:54:55,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 15:54:55,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:54:55,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:55,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:54:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:55,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638948565] [2020-11-29 15:54:55,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:54:55,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 15:54:55,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448524289] [2020-11-29 15:54:55,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 15:54:55,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:54:55,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 15:54:55,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 15:54:55,981 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-11-29 15:54:55,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:54:55,993 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-29 15:54:55,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 15:54:55,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-29 15:54:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:54:55,994 INFO L225 Difference]: With dead ends: 38 [2020-11-29 15:54:55,994 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 15:54:55,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 15:54:55,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 15:54:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 15:54:55,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 15:54:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-11-29 15:54:55,999 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-11-29 15:54:56,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:54:56,000 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-11-29 15:54:56,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 15:54:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-11-29 15:54:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 15:54:56,001 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:54:56,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:54:56,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 15:54:56,215 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:54:56,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:54:56,216 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-29 15:54:56,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:54:56,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953926733] [2020-11-29 15:54:56,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-29 15:54:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:54:56,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 15:54:56,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:54:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:56,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:54:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:56,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953926733] [2020-11-29 15:54:56,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:54:56,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-29 15:54:56,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426803509] [2020-11-29 15:54:56,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 15:54:56,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:54:56,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 15:54:56,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-29 15:54:56,436 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2020-11-29 15:54:56,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:54:56,533 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-11-29 15:54:56,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 15:54:56,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-29 15:54:56,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:54:56,535 INFO L225 Difference]: With dead ends: 40 [2020-11-29 15:54:56,535 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 15:54:56,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-29 15:54:56,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 15:54:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-11-29 15:54:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 15:54:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-11-29 15:54:56,540 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2020-11-29 15:54:56,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:54:56,540 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-11-29 15:54:56,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 15:54:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-11-29 15:54:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 15:54:56,541 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:54:56,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:54:56,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 15:54:56,763 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:54:56,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:54:56,764 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-29 15:54:56,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:54:56,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437867387] [2020-11-29 15:54:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-29 15:54:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:54:56,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 15:54:56,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:54:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:56,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:54:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:56,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437867387] [2020-11-29 15:54:56,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:54:56,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-29 15:54:56,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151191349] [2020-11-29 15:54:56,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 15:54:56,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:54:56,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 15:54:56,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 15:54:56,941 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-11-29 15:54:57,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:54:57,005 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-11-29 15:54:57,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 15:54:57,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-29 15:54:57,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:54:57,007 INFO L225 Difference]: With dead ends: 43 [2020-11-29 15:54:57,007 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 15:54:57,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 15:54:57,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 15:54:57,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 15:54:57,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 15:54:57,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-11-29 15:54:57,012 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2020-11-29 15:54:57,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:54:57,013 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-11-29 15:54:57,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 15:54:57,013 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-11-29 15:54:57,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 15:54:57,014 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 15:54:57,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 15:54:57,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-29 15:54:57,230 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 15:54:57,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 15:54:57,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-29 15:54:57,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 15:54:57,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104808075] [2020-11-29 15:54:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-29 15:54:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 15:54:57,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 15:54:57,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 15:54:57,427 INFO L626 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 15:54:57,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:57,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 15:54:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 15:54:57,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104808075] [2020-11-29 15:54:57,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 15:54:57,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2020-11-29 15:54:57,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916589776] [2020-11-29 15:54:57,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 15:54:57,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 15:54:57,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 15:54:57,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-11-29 15:54:57,811 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2020-11-29 15:54:58,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 15:54:58,039 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-11-29 15:54:58,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 15:54:58,040 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-11-29 15:54:58,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 15:54:58,041 INFO L225 Difference]: With dead ends: 23 [2020-11-29 15:54:58,041 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 15:54:58,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2020-11-29 15:54:58,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 15:54:58,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 15:54:58,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 15:54:58,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 15:54:58,043 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-29 15:54:58,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 15:54:58,043 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 15:54:58,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 15:54:58,043 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 15:54:58,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 15:54:58,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-29 15:54:58,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 15:54:58,497 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 15:54:58,497 INFO L262 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 15:54:58,497 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 15:54:58,498 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 15:54:58,498 INFO L262 CegarLoopResult]: For program point L28(lines 28 34) no Hoare annotation was computed. [2020-11-29 15:54:58,498 INFO L262 CegarLoopResult]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2020-11-29 15:54:58,498 INFO L262 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-11-29 15:54:58,498 INFO L262 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-11-29 15:54:58,498 INFO L262 CegarLoopResult]: For program point L71-2(lines 71 74) no Hoare annotation was computed. [2020-11-29 15:54:58,499 INFO L258 CegarLoopResult]: At program point L55(lines 46 56) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and |ULTIMATE.start_main_#t~short16| (= (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32)) (_ bv0 32)) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= .cse0 ULTIMATE.start___signbit_float_~x) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= .cse0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y .cse0) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))))) [2020-11-29 15:54:58,499 INFO L262 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2020-11-29 15:54:58,499 INFO L262 CegarLoopResult]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2020-11-29 15:54:58,499 INFO L262 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-11-29 15:54:58,499 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 15:54:58,499 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 15:54:58,500 INFO L262 CegarLoopResult]: For program point L49-1(lines 49 53) no Hoare annotation was computed. [2020-11-29 15:54:58,500 INFO L258 CegarLoopResult]: At program point L49-2(lines 49 53) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and |ULTIMATE.start_main_#t~short16| (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= .cse0 ULTIMATE.start___signbit_float_~x) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= .cse0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2020-11-29 15:54:58,500 INFO L262 CegarLoopResult]: For program point L49-3(lines 49 53) no Hoare annotation was computed. [2020-11-29 15:54:58,500 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 15:54:58,500 INFO L262 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2020-11-29 15:54:58,500 INFO L262 CegarLoopResult]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2020-11-29 15:54:58,500 INFO L262 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2020-11-29 15:54:58,501 INFO L258 CegarLoopResult]: At program point L17-2(lines 17 21) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2020-11-29 15:54:58,501 INFO L262 CegarLoopResult]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2020-11-29 15:54:58,501 INFO L262 CegarLoopResult]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2020-11-29 15:54:58,501 INFO L258 CegarLoopResult]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2020-11-29 15:54:58,501 INFO L262 CegarLoopResult]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2020-11-29 15:54:58,501 INFO L258 CegarLoopResult]: At program point L34(lines 14 35) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24))) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2020-11-29 15:54:58,501 INFO L258 CegarLoopResult]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2020-11-29 15:54:58,502 INFO L265 CegarLoopResult]: At program point L76(lines 58 77) the Hoare annotation is: true [2020-11-29 15:54:58,502 INFO L262 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-11-29 15:54:58,502 INFO L262 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2020-11-29 15:54:58,502 INFO L258 CegarLoopResult]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2020-11-29 15:54:58,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:54:58 BoogieIcfgContainer [2020-11-29 15:54:58,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 15:54:58,526 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 15:54:58,526 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 15:54:58,526 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 15:54:58,527 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:54:53" (3/4) ... [2020-11-29 15:54:58,531 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 15:54:58,545 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-29 15:54:58,545 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 15:54:58,545 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 15:54:58,546 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 15:54:58,576 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && 2bv32 == \result) && ~Pluszero~LONGDOUBLE() == x [2020-11-29 15:54:58,577 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2020-11-29 15:54:58,578 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((aux-res == -0.0f && __signbit_float(res) == 1-aux && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2020-11-29 15:54:58,578 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && !(0bv32 == \result)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2020-11-29 15:54:58,579 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((aux-res == -0.0f && __signbit_float(res) == 1-aux && ~bvadd64(\result, 4294967295bv32) == 0bv32) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) [2020-11-29 15:54:58,609 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-29 15:54:58,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 15:54:58,612 INFO L168 Benchmark]: Toolchain (without parser) took 5889.47 ms. Allocated memory was 54.5 MB in the beginning and 83.9 MB in the end (delta: 29.4 MB). Free memory was 37.8 MB in the beginning and 43.6 MB in the end (delta: -5.7 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2020-11-29 15:54:58,612 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 54.5 MB. Free memory is still 38.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:54:58,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.78 ms. Allocated memory is still 54.5 MB. Free memory was 37.2 MB in the beginning and 34.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 15:54:58,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.19 ms. Allocated memory is still 54.5 MB. Free memory was 34.8 MB in the beginning and 32.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 15:54:58,614 INFO L168 Benchmark]: Boogie Preprocessor took 40.28 ms. Allocated memory is still 54.5 MB. Free memory was 32.9 MB in the beginning and 31.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 15:54:58,614 INFO L168 Benchmark]: RCFGBuilder took 469.64 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 31.3 MB in the beginning and 41.5 MB in the end (delta: -10.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-11-29 15:54:58,615 INFO L168 Benchmark]: TraceAbstraction took 4909.00 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 41.2 MB in the beginning and 47.8 MB in the end (delta: -6.6 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2020-11-29 15:54:58,616 INFO L168 Benchmark]: Witness Printer took 83.56 ms. Allocated memory is still 83.9 MB. Free memory was 47.8 MB in the beginning and 43.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 15:54:58,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 54.5 MB. Free memory is still 38.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.78 ms. Allocated memory is still 54.5 MB. Free memory was 37.2 MB in the beginning and 34.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.19 ms. Allocated memory is still 54.5 MB. Free memory was 34.8 MB in the beginning and 32.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.28 ms. Allocated memory is still 54.5 MB. Free memory was 32.9 MB in the beginning and 31.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 469.64 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 31.3 MB in the beginning and 41.5 MB in the end (delta: -10.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4909.00 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 41.2 MB in the beginning and 47.8 MB in the end (delta: -6.6 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. * Witness Printer took 83.56 ms. Allocated memory is still 83.9 MB. Free memory was 47.8 MB in the beginning and 43.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((aux-res == -0.0f && __signbit_float(res) == 1-aux && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && !(0bv32 == \result)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((aux-res == -0.0f && __signbit_float(res) == 1-aux && ~bvadd64(\result, 4294967295bv32) == 0bv32) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && 2bv32 == \result) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 204 SDslu, 399 SDs, 0 SdLazy, 150 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 184 HoareAnnotationTreeSize, 8 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 16152 SizeOfPredicates, 38 NumberOfNonLiveVariables, 519 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...