./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0621b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0621b.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 53b93f4c2daa7fb311d5fc7342a0c6c62ac64fa8 ...................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0621b.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 53b93f4c2daa7fb311d5fc7342a0c6c62ac64fa8 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:27:49,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:27:49,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:27:49,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:27:49,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:27:49,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:27:49,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:27:49,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:27:49,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:27:49,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:27:49,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:27:49,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:27:49,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:27:49,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:27:49,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:27:49,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:27:49,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:27:49,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:27:49,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:27:49,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:27:49,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:27:49,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:27:49,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:27:49,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:27:49,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:27:49,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:27:49,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:27:49,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:27:49,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:27:49,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:27:49,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:27:49,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:27:49,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:27:49,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:27:49,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:27:49,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:27:49,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:27:49,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:27:49,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:27:49,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:27:49,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:27:49,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:27:49,631 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:27:49,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:27:49,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:27:49,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:27:49,634 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:27:49,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:27:49,635 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:27:49,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:27:49,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:27:49,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:27:49,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:27:49,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:27:49,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:27:49,638 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:27:49,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:27:49,638 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:27:49,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:27:49,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:27:49,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:27:49,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:27:49,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:27:49,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:27:49,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:27:49,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:27:49,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:27:49,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:27:49,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:27:49,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:27:49,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:27:49,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53b93f4c2daa7fb311d5fc7342a0c6c62ac64fa8 [2020-10-20 00:27:49,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:27:49,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:27:49,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:27:49,869 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:27:49,870 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:27:49,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0621b.c [2020-10-20 00:27:49,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c6ff6b15/e490959e7415435f90416c9119fcf2e3/FLAG8b0ea65be [2020-10-20 00:27:50,501 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:27:50,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0621b.c [2020-10-20 00:27:50,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c6ff6b15/e490959e7415435f90416c9119fcf2e3/FLAG8b0ea65be [2020-10-20 00:27:50,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c6ff6b15/e490959e7415435f90416c9119fcf2e3 [2020-10-20 00:27:50,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:27:50,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:27:50,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:27:50,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:27:50,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:27:50,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:27:50" (1/1) ... [2020-10-20 00:27:50,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@136703ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:50, skipping insertion in model container [2020-10-20 00:27:50,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:27:50" (1/1) ... [2020-10-20 00:27:50,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:27:50,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:27:51,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:27:51,215 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:27:51,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:27:51,282 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:27:51,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:51 WrapperNode [2020-10-20 00:27:51,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:27:51,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:27:51,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:27:51,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:27:51,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:51" (1/1) ... [2020-10-20 00:27:51,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:51" (1/1) ... [2020-10-20 00:27:51,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:27:51,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:27:51,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:27:51,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:27:51,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:51" (1/1) ... [2020-10-20 00:27:51,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:51" (1/1) ... [2020-10-20 00:27:51,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:51" (1/1) ... [2020-10-20 00:27:51,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:51" (1/1) ... [2020-10-20 00:27:51,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:51" (1/1) ... [2020-10-20 00:27:51,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:51" (1/1) ... [2020-10-20 00:27:51,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:51" (1/1) ... [2020-10-20 00:27:51,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:27:51,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:27:51,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:27:51,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:27:51,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:27:51,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:27:51,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:27:51,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:27:51,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:27:51,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:27:51,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:27:51,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:27:51,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:27:51,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-20 00:27:51,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:27:51,937 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:27:51,938 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-20 00:27:51,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:27:51 BoogieIcfgContainer [2020-10-20 00:27:51,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:27:51,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:27:51,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:27:51,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:27:51,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:27:50" (1/3) ... [2020-10-20 00:27:51,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9fe64b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:27:51, skipping insertion in model container [2020-10-20 00:27:51,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:51" (2/3) ... [2020-10-20 00:27:51,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9fe64b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:27:51, skipping insertion in model container [2020-10-20 00:27:51,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:27:51" (3/3) ... [2020-10-20 00:27:51,955 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0621b.c [2020-10-20 00:27:51,967 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:27:51,976 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:27:51,987 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:27:52,013 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:27:52,014 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:27:52,014 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:27:52,014 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:27:52,014 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:27:52,015 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:27:52,015 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:27:52,015 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:27:52,032 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-20 00:27:52,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:27:52,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:27:52,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:27:52,041 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:27:52,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:27:52,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1035664421, now seen corresponding path program 1 times [2020-10-20 00:27:52,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:27:52,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857822891] [2020-10-20 00:27:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:27:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:27:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:27:52,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857822891] [2020-10-20 00:27:52,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:27:52,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:27:52,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919683404] [2020-10-20 00:27:52,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:27:52,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:27:52,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:27:52,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:27:52,253 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-10-20 00:27:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:27:52,291 INFO L93 Difference]: Finished difference Result 67 states and 105 transitions. [2020-10-20 00:27:52,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:27:52,293 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 00:27:52,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:27:52,316 INFO L225 Difference]: With dead ends: 67 [2020-10-20 00:27:52,316 INFO L226 Difference]: Without dead ends: 31 [2020-10-20 00:27:52,319 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 [2020-10-20 00:27:52,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-20 00:27:52,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-20 00:27:52,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 00:27:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2020-10-20 00:27:52,355 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2020-10-20 00:27:52,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:27:52,355 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2020-10-20 00:27:52,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:27:52,356 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2020-10-20 00:27:52,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:27:52,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:27:52,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:27:52,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:27:52,357 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:27:52,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:27:52,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1843594333, now seen corresponding path program 1 times [2020-10-20 00:27:52,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:27:52,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241963022] [2020-10-20 00:27:52,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:27:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:27:52,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:27:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:27:52,514 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:27:52,573 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:27:52,574 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:27:52,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:27:52,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:27:52 BoogieIcfgContainer [2020-10-20 00:27:52,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:27:52,630 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:27:52,630 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:27:52,630 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:27:52,631 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:27:51" (3/4) ... [2020-10-20 00:27:52,635 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:27:52,635 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:27:52,638 INFO L168 Benchmark]: Toolchain (without parser) took 1743.72 ms. Allocated memory was 39.8 MB in the beginning and 46.1 MB in the end (delta: 6.3 MB). Free memory was 19.6 MB in the beginning and 6.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 19.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:27:52,639 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 30.9 MB. Free memory was 6.2 MB in the beginning and 6.1 MB in the end (delta: 43.4 kB). Peak memory consumption was 43.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:27:52,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.87 ms. Allocated memory was 39.8 MB in the beginning and 43.0 MB in the end (delta: 3.1 MB). Free memory was 18.6 MB in the beginning and 17.7 MB in the end (delta: 948.6 kB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:27:52,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.96 ms. Allocated memory is still 43.0 MB. Free memory was 17.7 MB in the beginning and 15.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:27:52,645 INFO L168 Benchmark]: Boogie Preprocessor took 45.52 ms. Allocated memory is still 43.0 MB. Free memory was 15.2 MB in the beginning and 13.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:27:52,646 INFO L168 Benchmark]: RCFGBuilder took 555.82 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 13.1 MB in the beginning and 24.6 MB in the end (delta: -11.5 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:27:52,647 INFO L168 Benchmark]: TraceAbstraction took 688.12 ms. Allocated memory was 45.6 MB in the beginning and 46.1 MB in the end (delta: 524.3 kB). Free memory was 24.2 MB in the beginning and 7.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:27:52,651 INFO L168 Benchmark]: Witness Printer took 5.58 ms. Allocated memory is still 46.1 MB. Free memory was 7.0 MB in the beginning and 6.7 MB in the end (delta: 374.5 kB). Peak memory consumption was 374.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:27:52,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 30.9 MB. Free memory was 6.2 MB in the beginning and 6.1 MB in the end (delta: 43.4 kB). Peak memory consumption was 43.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 382.87 ms. Allocated memory was 39.8 MB in the beginning and 43.0 MB in the end (delta: 3.1 MB). Free memory was 18.6 MB in the beginning and 17.7 MB in the end (delta: 948.6 kB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 54.96 ms. Allocated memory is still 43.0 MB. Free memory was 17.7 MB in the beginning and 15.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 45.52 ms. Allocated memory is still 43.0 MB. Free memory was 15.2 MB in the beginning and 13.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 555.82 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 13.1 MB in the beginning and 24.6 MB in the end (delta: -11.5 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 688.12 ms. Allocated memory was 45.6 MB in the beginning and 46.1 MB in the end (delta: 524.3 kB). Free memory was 24.2 MB in the beginning and 7.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. * Witness Printer took 5.58 ms. Allocated memory is still 46.1 MB. Free memory was 7.0 MB in the beginning and 6.7 MB in the end (delta: 374.5 kB). Peak memory consumption was 374.5 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 84, overapproximation of bitwiseAnd at line 75, overapproximation of someBinaryDOUBLEComparisonOperation at line 146. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L143] double x = -1.0 / 0.0; [L67] double w, s1, s2, z; [L68] __int32_t ix, hx, id; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (hx) = gh_u.parts.msw [L75] ix = hx & 0x7fffffff VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L76] COND TRUE ix >= 0x44100000 [L77] __uint32_t low; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L79] ieee_double_shape_type gl_u; [L80] gl_u.value = (x) [L81] EXPR gl_u.parts.lsw [L81] (low) = gl_u.parts.lsw [L83] COND TRUE ix > 0x7ff00000 || (ix == 0x7ff00000 && (low != 0)) [L84] return x + x; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L144] double res = atan_double(x); [L146] COND TRUE res != -pi_o_2 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L3] __assert_fail("0", "double_req_bl_0621b.c", 3, "reach_error") VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:27:54,936 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-20 00:27:55,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:27:55,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:27:55,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:27:55,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:27:55,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:27:55,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:27:55,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:27:55,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:27:55,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:27:55,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:27:55,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:27:55,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:27:55,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:27:55,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:27:55,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:27:55,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:27:55,106 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:27:55,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:27:55,107 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:27:55,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:27:55,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:27:55,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:27:55,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:27:55,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:27:55,109 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:27:55,110 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:27:55,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:27:55,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:27:55,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:27:55,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:27:55,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:27:55,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:27:55,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:27:55,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:27:55,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:27:55,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:27:55,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:27:55,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:27:55,113 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:27:55,114 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:27:55,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:27:55,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:27:55,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:27:55,115 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53b93f4c2daa7fb311d5fc7342a0c6c62ac64fa8 [2020-10-20 00:27:55,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:27:55,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:27:55,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:27:55,365 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:27:55,366 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:27:55,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0621b.c [2020-10-20 00:27:55,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929bb1737/b85964771bf045e1b21686b893057026/FLAGad1654545 [2020-10-20 00:27:55,935 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:27:55,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0621b.c [2020-10-20 00:27:55,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929bb1737/b85964771bf045e1b21686b893057026/FLAGad1654545 [2020-10-20 00:27:56,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929bb1737/b85964771bf045e1b21686b893057026 [2020-10-20 00:27:56,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:27:56,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:27:56,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:27:56,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:27:56,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:27:56,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:27:56" (1/1) ... [2020-10-20 00:27:56,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a2c466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:56, skipping insertion in model container [2020-10-20 00:27:56,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:27:56" (1/1) ... [2020-10-20 00:27:56,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:27:56,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:27:56,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:27:56,659 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:27:56,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:27:56,775 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:27:56,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:56 WrapperNode [2020-10-20 00:27:56,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:27:56,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:27:56,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:27:56,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:27:56,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:56" (1/1) ... [2020-10-20 00:27:56,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:56" (1/1) ... [2020-10-20 00:27:56,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:27:56,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:27:56,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:27:56,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:27:56,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:56" (1/1) ... [2020-10-20 00:27:56,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:56" (1/1) ... [2020-10-20 00:27:56,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:56" (1/1) ... [2020-10-20 00:27:56,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:56" (1/1) ... [2020-10-20 00:27:56,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:56" (1/1) ... [2020-10-20 00:27:56,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:56" (1/1) ... [2020-10-20 00:27:56,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:56" (1/1) ... [2020-10-20 00:27:56,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:27:56,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:27:56,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:27:56,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:27:56,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:27:56,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:27:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:27:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:27:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:27:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-10-20 00:27:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:27:56,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:27:56,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:27:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:27:56,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:28:16,636 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:28:16,638 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-20 00:28:16,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:28:16 BoogieIcfgContainer [2020-10-20 00:28:16,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:28:16,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:28:16,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:28:16,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:28:16,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:27:56" (1/3) ... [2020-10-20 00:28:16,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fbc8d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:28:16, skipping insertion in model container [2020-10-20 00:28:16,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:56" (2/3) ... [2020-10-20 00:28:16,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fbc8d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:28:16, skipping insertion in model container [2020-10-20 00:28:16,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:28:16" (3/3) ... [2020-10-20 00:28:16,660 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0621b.c [2020-10-20 00:28:16,675 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:28:16,689 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:28:16,707 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:28:16,747 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:28:16,748 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:28:16,748 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:28:16,748 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:28:16,749 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:28:16,749 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:28:16,749 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:28:16,750 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:28:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-20 00:28:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:28:16,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:28:16,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:28:16,785 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:28:16,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:28:16,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1035664421, now seen corresponding path program 1 times [2020-10-20 00:28:16,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:28:16,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477163137] [2020-10-20 00:28:16,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 00:28:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:28:17,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:28:17,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:28:17,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:28:17,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:28:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:28:17,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477163137] [2020-10-20 00:28:17,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:28:17,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:28:17,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671767006] [2020-10-20 00:28:17,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:28:17,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:28:17,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:28:17,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:28:17,469 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-10-20 00:28:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:28:17,500 INFO L93 Difference]: Finished difference Result 67 states and 105 transitions. [2020-10-20 00:28:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:28:17,502 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 00:28:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:28:17,524 INFO L225 Difference]: With dead ends: 67 [2020-10-20 00:28:17,524 INFO L226 Difference]: Without dead ends: 31 [2020-10-20 00:28:17,530 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 [2020-10-20 00:28:17,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-20 00:28:17,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-20 00:28:17,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 00:28:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2020-10-20 00:28:17,585 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2020-10-20 00:28:17,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:28:17,586 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2020-10-20 00:28:17,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:28:17,587 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2020-10-20 00:28:17,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:28:17,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:28:17,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:28:17,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:28:17,790 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:28:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:28:17,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1843594333, now seen corresponding path program 1 times [2020-10-20 00:28:17,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:28:17,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815503748] [2020-10-20 00:28:17,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 00:28:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:28:18,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 00:28:18,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:28:19,324 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2020-10-20 00:28:19,357 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:28:19,366 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:28:19,367 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:28:19,442 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:28:19,458 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-20 00:28:19,462 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:52, output treesize:41 [2020-10-20 00:28:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:28:19,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:28:19,771 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 00:28:19,809 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2020-10-20 00:28:19,824 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:28:19,832 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:28:19,833 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:28:19,915 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:28:19,918 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-10-20 00:28:19,919 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:48, output treesize:37 [2020-10-20 00:28:20,146 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 23 [2020-10-20 00:28:20,329 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 00:28:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:28:20,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815503748] [2020-10-20 00:28:20,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:28:20,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-20 00:28:20,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897446043] [2020-10-20 00:28:20,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 00:28:20,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:28:20,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 00:28:20,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:28:20,524 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand 10 states. [2020-10-20 00:28:21,184 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-20 00:28:21,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:28:21,670 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2020-10-20 00:28:21,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:28:21,692 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-20 00:28:21,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:28:21,694 INFO L225 Difference]: With dead ends: 35 [2020-10-20 00:28:21,694 INFO L226 Difference]: Without dead ends: 14 [2020-10-20 00:28:21,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-20 00:28:21,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-20 00:28:21,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-20 00:28:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 00:28:21,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-10-20 00:28:21,704 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 12 [2020-10-20 00:28:21,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:28:21,704 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-10-20 00:28:21,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 00:28:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-10-20 00:28:21,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:28:21,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:28:21,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:28:21,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:28:21,921 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:28:21,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:28:21,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1317299133, now seen corresponding path program 1 times [2020-10-20 00:28:21,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:28:21,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153821312] [2020-10-20 00:28:21,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 00:28:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:28:23,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-20 00:28:23,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:28:23,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:28:23,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:28:24,415 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 39 [2020-10-20 00:28:24,417 INFO L350 Elim1Store]: treesize reduction 339, result has 16.7 percent of original size [2020-10-20 00:28:24,418 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 489 treesize of output 513 [2020-10-20 00:28:24,457 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 5, 2, 2, 2, 2, 2, 2, 1] term [2020-10-20 00:28:24,459 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:24,462 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 2, 2, 2, 2, 2, 2, 1] term [2020-10-20 00:28:24,463 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:24,470 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-10-20 00:28:24,472 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:24,477 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 5, 2, 5, 2, 4, 2, 3, 2, 3, 2, 3, 2, 2, 1] term [2020-10-20 00:28:24,478 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:24,486 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 3, 5, 2, 4, 2, 3, 2, 3, 2, 2, 1] term [2020-10-20 00:28:24,487 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:24,491 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 3, 5, 2, 4, 2, 3, 2, 2, 1] term [2020-10-20 00:28:24,492 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:24,496 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 3, 5, 2, 4, 2, 2, 2, 2, 1] term [2020-10-20 00:28:24,497 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:24,501 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 3, 5, 2, 4, 2, 2, 2, 2, 1] term [2020-10-20 00:28:24,502 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:24,506 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 3, 5, 2, 4, 2, 2, 2, 2, 1] term [2020-10-20 00:28:24,507 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:24,511 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 3, 5, 2, 4, 2, 2, 2, 2, 1] term [2020-10-20 00:28:24,512 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:24,516 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 3, 5, 2, 4, 2, 2, 2, 2, 1] term [2020-10-20 00:28:24,517 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:24,520 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 3, 5, 2, 4, 2, 2, 2, 2, 1] term [2020-10-20 00:28:24,521 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:24,527 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:28:26,941 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 172 DAG size of output: 124 [2020-10-20 00:28:26,944 INFO L625 ElimStorePlain]: treesize reduction 2569, result has 7.3 percent of original size [2020-10-20 00:28:26,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153821312] [2020-10-20 00:28:26,970 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:28:26,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1929248024] [2020-10-20 00:28:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:28:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:28:38,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-20 00:28:38,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:28:38,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:28:38,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:28:38,341 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 39 [2020-10-20 00:28:38,343 INFO L350 Elim1Store]: treesize reduction 339, result has 16.7 percent of original size [2020-10-20 00:28:38,344 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 119 treesize of output 163 [2020-10-20 00:28:38,346 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-10-20 00:28:38,347 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:38,352 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 7, 1] term [2020-10-20 00:28:38,353 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:38,355 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:28:38,838 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2020-10-20 00:28:38,841 INFO L625 ElimStorePlain]: treesize reduction 174, result has 48.4 percent of original size [2020-10-20 00:28:38,846 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:28:38,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853534639] [2020-10-20 00:28:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:28:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:28:39,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 00:28:39,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:28:39,662 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2020-10-20 00:28:39,663 INFO L350 Elim1Store]: treesize reduction 355, result has 14.5 percent of original size [2020-10-20 00:28:39,664 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 118 [2020-10-20 00:28:39,668 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:28:40,110 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-10-20 00:28:40,112 INFO L625 ElimStorePlain]: treesize reduction 40, result has 78.4 percent of original size [2020-10-20 00:28:40,115 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:28:40,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:28:40,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:28:40,116 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:28:40,116 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:28:40,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:28:40,747 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:28:40,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:28:40 BoogieIcfgContainer [2020-10-20 00:28:40,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:28:40,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:28:40,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:28:40,749 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:28:40,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:28:16" (3/4) ... [2020-10-20 00:28:40,752 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:28:40,752 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:28:40,754 INFO L168 Benchmark]: Toolchain (without parser) took 44515.46 ms. Allocated memory was 34.6 MB in the beginning and 61.9 MB in the end (delta: 27.3 MB). Free memory was 15.4 MB in the beginning and 40.1 MB in the end (delta: -24.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:28:40,755 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 33.6 MB. Free memory was 9.9 MB in the beginning and 9.8 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:28:40,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 529.77 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 14.6 MB in the beginning and 19.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:28:40,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.26 ms. Allocated memory is still 43.5 MB. Free memory was 19.7 MB in the beginning and 17.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:28:40,757 INFO L168 Benchmark]: Boogie Preprocessor took 60.43 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 17.2 MB in the beginning and 26.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 6.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:28:40,758 INFO L168 Benchmark]: RCFGBuilder took 19740.09 ms. Allocated memory was 45.1 MB in the beginning and 46.1 MB in the end (delta: 1.0 MB). Free memory was 26.7 MB in the beginning and 26.0 MB in the end (delta: 667.1 kB). Peak memory consumption was 16.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:28:40,759 INFO L168 Benchmark]: TraceAbstraction took 24104.11 ms. Allocated memory was 46.1 MB in the beginning and 61.9 MB in the end (delta: 15.7 MB). Free memory was 25.4 MB in the beginning and 40.7 MB in the end (delta: -15.3 MB). Peak memory consumption was 32.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:28:40,760 INFO L168 Benchmark]: Witness Printer took 4.02 ms. Allocated memory is still 61.9 MB. Free memory was 40.7 MB in the beginning and 40.1 MB in the end (delta: 625.4 kB). Peak memory consumption was 625.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:28:40,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 33.6 MB. Free memory was 9.9 MB in the beginning and 9.8 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 529.77 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 14.6 MB in the beginning and 19.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 65.26 ms. Allocated memory is still 43.5 MB. Free memory was 19.7 MB in the beginning and 17.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 60.43 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 17.2 MB in the beginning and 26.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 6.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 19740.09 ms. Allocated memory was 45.1 MB in the beginning and 46.1 MB in the end (delta: 1.0 MB). Free memory was 26.7 MB in the beginning and 26.0 MB in the end (delta: 667.1 kB). Peak memory consumption was 16.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 24104.11 ms. Allocated memory was 46.1 MB in the beginning and 61.9 MB in the end (delta: 15.7 MB). Free memory was 25.4 MB in the beginning and 40.7 MB in the end (delta: -15.3 MB). Peak memory consumption was 32.5 MB. Max. memory is 14.3 GB. * Witness Printer took 4.02 ms. Allocated memory is still 61.9 MB. Free memory was 40.7 MB in the beginning and 40.1 MB in the end (delta: 625.4 kB). Peak memory consumption was 625.4 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L143] double x = -1.0 / 0.0; [L67] double w, s1, s2, z; [L68] __int32_t ix, hx, id; [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (hx) = gh_u.parts.msw [L75] ix = hx & 0x7fffffff [L76] COND TRUE ix >= 0x44100000 [L77] __uint32_t low; [L79] ieee_double_shape_type gl_u; [L80] gl_u.value = (x) [L81] EXPR gl_u.parts.lsw [L81] (low) = gl_u.parts.lsw [L83] COND FALSE !(ix > 0x7ff00000 || (ix == 0x7ff00000 && (low != 0))) [L85] COND FALSE !(hx > 0) [L88] EXPR atanhi_atan[3] [L88] EXPR atanlo_atan[3] [L88] return -atanhi_atan[3] - atanlo_atan[3]; [L144] double res = atan_double(x); [L146] COND TRUE res != -pi_o_2 [L3] __assert_fail("0", "double_req_bl_0621b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 23.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 39 SDslu, 9 SDs, 0 SdLazy, 15 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 12 QuantifiedInterpolants, 4331 SizeOfPredicates, 10 NumberOfNonLiveVariables, 236 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...