./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0663a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0663a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e7d0b868b35716dc1f516fc758062372899bb27 ............................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0663a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e7d0b868b35716dc1f516fc758062372899bb27 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 20:43:50,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:43:50,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:43:50,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:43:50,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:43:50,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:43:50,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:43:50,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:43:50,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:43:50,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:43:50,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:43:50,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:43:50,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:43:50,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:43:50,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:43:50,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:43:50,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:43:50,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:43:50,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:43:50,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:43:50,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:43:50,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:43:50,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:43:50,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:43:50,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:43:50,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:43:50,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:43:50,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:43:50,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:43:50,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:43:50,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:43:50,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:43:50,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:43:50,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:43:50,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:43:50,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:43:50,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:43:50,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:43:50,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:43:50,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:43:50,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:43:50,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 20:43:50,837 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:43:50,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:43:50,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:43:50,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:43:50,849 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:43:50,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:43:50,850 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:43:50,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:43:50,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:43:50,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:43:50,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 20:43:50,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:43:50,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 20:43:50,852 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:43:50,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:43:50,852 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:43:50,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 20:43:50,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:43:50,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:43:50,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:43:50,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:43:50,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:43:50,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:43:50,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:43:50,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 20:43:50,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:43:50,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:43:50,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 20:43:50,856 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer 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(__VERIFIER_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 -> 3e7d0b868b35716dc1f516fc758062372899bb27 [2019-11-15 20:43:50,889 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:43:50,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:43:50,905 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:43:50,907 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:43:50,907 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:43:50,908 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0663a.c [2019-11-15 20:43:50,965 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/data/951ae1214/d4f4172234f04442b2ba247d7e133f19/FLAG64761c2ff [2019-11-15 20:43:51,411 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:43:51,412 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/sv-benchmarks/c/float-newlib/double_req_bl_0663a.c [2019-11-15 20:43:51,421 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/data/951ae1214/d4f4172234f04442b2ba247d7e133f19/FLAG64761c2ff [2019-11-15 20:43:51,764 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/data/951ae1214/d4f4172234f04442b2ba247d7e133f19 [2019-11-15 20:43:51,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:43:51,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:43:51,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:43:51,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:43:51,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:43:51,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:43:51" (1/1) ... [2019-11-15 20:43:51,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43625fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:51, skipping insertion in model container [2019-11-15 20:43:51,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:43:51" (1/1) ... [2019-11-15 20:43:51,784 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:43:51,809 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:43:52,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:43:52,091 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:43:52,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:43:52,170 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:43:52,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:52 WrapperNode [2019-11-15 20:43:52,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:43:52,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:43:52,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:43:52,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:43:52,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:52" (1/1) ... [2019-11-15 20:43:52,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:52" (1/1) ... [2019-11-15 20:43:52,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:43:52,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:43:52,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:43:52,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:43:52,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:52" (1/1) ... [2019-11-15 20:43:52,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:52" (1/1) ... [2019-11-15 20:43:52,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:52" (1/1) ... [2019-11-15 20:43:52,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:52" (1/1) ... [2019-11-15 20:43:52,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:52" (1/1) ... [2019-11-15 20:43:52,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:52" (1/1) ... [2019-11-15 20:43:52,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:52" (1/1) ... [2019-11-15 20:43:52,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:43:52,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:43:52,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:43:52,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:43:52,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/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 [2019-11-15 20:43:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 20:43:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-15 20:43:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 20:43:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 20:43:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:43:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:43:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 20:43:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-11-15 20:43:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 20:43:53,168 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:43:53,169 INFO L284 CfgBuilder]: Removed 44 assume(true) statements. [2019-11-15 20:43:53,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:43:53 BoogieIcfgContainer [2019-11-15 20:43:53,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:43:53,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:43:53,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:43:53,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:43:53,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:43:51" (1/3) ... [2019-11-15 20:43:53,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7eb463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:43:53, skipping insertion in model container [2019-11-15 20:43:53,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:52" (2/3) ... [2019-11-15 20:43:53,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7eb463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:43:53, skipping insertion in model container [2019-11-15 20:43:53,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:43:53" (3/3) ... [2019-11-15 20:43:53,177 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0663a.c [2019-11-15 20:43:53,186 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:43:53,195 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 20:43:53,205 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 20:43:53,234 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:43:53,235 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 20:43:53,235 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:43:53,235 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:43:53,236 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:43:53,236 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:43:53,236 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:43:53,236 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:43:53,258 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2019-11-15 20:43:53,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 20:43:53,265 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:43:53,266 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:43:53,267 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:43:53,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:43:53,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1059427896, now seen corresponding path program 1 times [2019-11-15 20:43:53,281 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:43:53,281 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160964264] [2019-11-15 20:43:53,281 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:43:53,281 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:43:53,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:43:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:43:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:43:53,473 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160964264] [2019-11-15 20:43:53,474 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:43:53,474 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 20:43:53,474 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717824949] [2019-11-15 20:43:53,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 20:43:53,479 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:43:53,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 20:43:53,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 20:43:53,494 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 2 states. [2019-11-15 20:43:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:43:53,525 INFO L93 Difference]: Finished difference Result 227 states and 382 transitions. [2019-11-15 20:43:53,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 20:43:53,527 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-15 20:43:53,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:43:53,537 INFO L225 Difference]: With dead ends: 227 [2019-11-15 20:43:53,537 INFO L226 Difference]: Without dead ends: 111 [2019-11-15 20:43:53,540 INFO L600 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 [2019-11-15 20:43:53,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-11-15 20:43:53,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2019-11-15 20:43:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-11-15 20:43:53,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2019-11-15 20:43:53,582 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 11 [2019-11-15 20:43:53,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:43:53,583 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2019-11-15 20:43:53,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 20:43:53,583 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2019-11-15 20:43:53,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 20:43:53,584 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:43:53,584 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:43:53,585 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:43:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:43:53,585 INFO L82 PathProgramCache]: Analyzing trace with hash -7417919, now seen corresponding path program 1 times [2019-11-15 20:43:53,586 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:43:53,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297659085] [2019-11-15 20:43:53,586 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:43:53,586 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:43:53,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:43:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:43:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:43:53,795 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:43:53,795 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 20:43:53,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:43:53 BoogieIcfgContainer [2019-11-15 20:43:53,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:43:53,846 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:43:53,846 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:43:53,846 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:43:53,847 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:43:53" (3/4) ... [2019-11-15 20:43:53,850 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 20:43:53,850 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:43:53,852 INFO L168 Benchmark]: Toolchain (without parser) took 2083.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 950.2 MB in the beginning and 1.0 GB in the end (delta: -51.9 MB). Peak memory consumption was 70.3 MB. Max. memory is 11.5 GB. [2019-11-15 20:43:53,852 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:43:53,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -161.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 20:43:53,854 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:43:53,854 INFO L168 Benchmark]: Boogie Preprocessor took 118.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-15 20:43:53,855 INFO L168 Benchmark]: RCFGBuilder took 803.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-11-15 20:43:53,855 INFO L168 Benchmark]: TraceAbstraction took 674.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 11.5 GB. [2019-11-15 20:43:53,856 INFO L168 Benchmark]: Witness Printer took 4.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:43:53,859 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 400.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -161.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 75.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 118.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 803.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 674.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 260]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 251, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of someBinaryDOUBLEComparisonOperation at line 259. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] 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, }; [L60-L62] 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; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L251] double x = -0.0; [L252] double y = __VERIFIER_nondet_double(); [L254] COND TRUE y > 0.0 [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L256] double res = __ieee754_atan2(y, x); [L259] COND TRUE res != pi_o_2 VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L260] __VERIFIER_error() VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 115 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 164 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=115occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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, 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 0.1.24-cad4683 [2019-11-15 20:43:55,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:43:56,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:43:56,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:43:56,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:43:56,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:43:56,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:43:56,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:43:56,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:43:56,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:43:56,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:43:56,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:43:56,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:43:56,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:43:56,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:43:56,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:43:56,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:43:56,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:43:56,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:43:56,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:43:56,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:43:56,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:43:56,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:43:56,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:43:56,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:43:56,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:43:56,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:43:56,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:43:56,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:43:56,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:43:56,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:43:56,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:43:56,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:43:56,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:43:56,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:43:56,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:43:56,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:43:56,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:43:56,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:43:56,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:43:56,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:43:56,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 20:43:56,062 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:43:56,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:43:56,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:43:56,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:43:56,064 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:43:56,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:43:56,064 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:43:56,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:43:56,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:43:56,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 20:43:56,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:43:56,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 20:43:56,066 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 20:43:56,066 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 20:43:56,066 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:43:56,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:43:56,066 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:43:56,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 20:43:56,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:43:56,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:43:56,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:43:56,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:43:56,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:43:56,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:43:56,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:43:56,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 20:43:56,068 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 20:43:56,068 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 20:43:56,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 20:43:56,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 20:43:56,069 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer 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(__VERIFIER_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 -> 3e7d0b868b35716dc1f516fc758062372899bb27 [2019-11-15 20:43:56,115 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:43:56,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:43:56,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:43:56,134 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:43:56,138 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:43:56,139 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0663a.c [2019-11-15 20:43:56,199 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/data/572105859/e497c3b1561f4470a76c8ba4608fe5e7/FLAG5bd174f23 [2019-11-15 20:43:56,612 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:43:56,613 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/sv-benchmarks/c/float-newlib/double_req_bl_0663a.c [2019-11-15 20:43:56,620 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/data/572105859/e497c3b1561f4470a76c8ba4608fe5e7/FLAG5bd174f23 [2019-11-15 20:43:57,014 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/data/572105859/e497c3b1561f4470a76c8ba4608fe5e7 [2019-11-15 20:43:57,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:43:57,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:43:57,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:43:57,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:43:57,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:43:57,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:43:57" (1/1) ... [2019-11-15 20:43:57,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76ec38f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:57, skipping insertion in model container [2019-11-15 20:43:57,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:43:57" (1/1) ... [2019-11-15 20:43:57,032 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:43:57,072 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:43:57,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:43:57,435 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:43:57,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:43:57,520 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:43:57,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:57 WrapperNode [2019-11-15 20:43:57,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:43:57,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:43:57,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:43:57,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:43:57,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:57" (1/1) ... [2019-11-15 20:43:57,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:57" (1/1) ... [2019-11-15 20:43:57,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:43:57,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:43:57,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:43:57,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:43:57,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:57" (1/1) ... [2019-11-15 20:43:57,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:57" (1/1) ... [2019-11-15 20:43:57,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:57" (1/1) ... [2019-11-15 20:43:57,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:57" (1/1) ... [2019-11-15 20:43:57,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:57" (1/1) ... [2019-11-15 20:43:57,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:57" (1/1) ... [2019-11-15 20:43:57,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:57" (1/1) ... [2019-11-15 20:43:57,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:43:57,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:43:57,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:43:57,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:43:57,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/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 [2019-11-15 20:43:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-15 20:43:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-15 20:43:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 20:43:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-11-15 20:43:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 20:43:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:43:57,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:43:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 20:43:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 20:44:34,683 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:44:34,684 INFO L284 CfgBuilder]: Removed 44 assume(true) statements. [2019-11-15 20:44:34,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:44:34 BoogieIcfgContainer [2019-11-15 20:44:34,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:44:34,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:44:34,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:44:34,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:44:34,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:43:57" (1/3) ... [2019-11-15 20:44:34,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20bd6a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:44:34, skipping insertion in model container [2019-11-15 20:44:34,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:43:57" (2/3) ... [2019-11-15 20:44:34,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20bd6a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:44:34, skipping insertion in model container [2019-11-15 20:44:34,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:44:34" (3/3) ... [2019-11-15 20:44:34,692 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0663a.c [2019-11-15 20:44:34,701 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:44:34,709 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 20:44:34,720 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 20:44:34,743 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:44:34,743 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 20:44:34,743 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:44:34,744 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:44:34,744 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:44:34,744 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:44:34,744 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:44:34,744 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:44:34,760 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2019-11-15 20:44:34,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 20:44:34,765 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:44:34,766 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:44:34,768 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:44:34,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:44:34,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1059427896, now seen corresponding path program 1 times [2019-11-15 20:44:34,784 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:44:34,784 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517011649] [2019-11-15 20:44:34,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/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 [2019-11-15 20:44:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:44:35,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 20:44:35,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:44:35,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:44:35,134 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 20:44:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:44:35,139 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517011649] [2019-11-15 20:44:35,140 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:44:35,140 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 20:44:35,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965114502] [2019-11-15 20:44:35,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 20:44:35,144 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 20:44:35,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 20:44:35,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 20:44:35,156 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 2 states. [2019-11-15 20:44:35,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:44:35,185 INFO L93 Difference]: Finished difference Result 227 states and 382 transitions. [2019-11-15 20:44:35,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 20:44:35,186 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-15 20:44:35,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:44:35,197 INFO L225 Difference]: With dead ends: 227 [2019-11-15 20:44:35,198 INFO L226 Difference]: Without dead ends: 111 [2019-11-15 20:44:35,201 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 20:44:35,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-11-15 20:44:35,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2019-11-15 20:44:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-11-15 20:44:35,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2019-11-15 20:44:35,245 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 11 [2019-11-15 20:44:35,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:44:35,245 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2019-11-15 20:44:35,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 20:44:35,246 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2019-11-15 20:44:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 20:44:35,247 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:44:35,247 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:44:35,469 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 20:44:35,470 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:44:35,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:44:35,470 INFO L82 PathProgramCache]: Analyzing trace with hash -7417919, now seen corresponding path program 1 times [2019-11-15 20:44:35,471 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:44:35,471 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659036130] [2019-11-15 20:44:35,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/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 [2019-11-15 20:44:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:44:35,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-15 20:44:35,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:44:36,150 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2019-11-15 20:44:36,185 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2019-11-15 20:44:36,186 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 20:44:36,206 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:44:36,216 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:44:36,216 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2019-11-15 20:44:36,217 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-15 20:44:36,221 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:44:36,221 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 20:44:36,252 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:44:36,253 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 20:44:36,253 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:62, output treesize:34 [2019-11-15 20:44:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:44:36,457 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 20:44:36,615 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:44:36,676 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:44:36,677 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 63 treesize of output 61 [2019-11-15 20:44:36,712 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:44:36,713 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 41 [2019-11-15 20:44:36,713 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 20:44:36,749 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:44:36,763 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2019-11-15 20:44:36,764 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-15 20:44:36,774 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:44:36,775 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 20:44:36,801 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:44:36,801 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 44 [2019-11-15 20:44:36,820 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:44:36,820 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2019-11-15 20:44:36,821 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-15 20:44:36,839 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:44:36,839 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 20:44:36,875 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:44:36,876 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2019-11-15 20:44:36,876 INFO L221 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:108, output treesize:50 [2019-11-15 20:44:37,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:44:37,227 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:44:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:44:37,297 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659036130] [2019-11-15 20:44:37,297 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:44:37,297 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2019-11-15 20:44:37,297 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221814081] [2019-11-15 20:44:37,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-15 20:44:37,299 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 20:44:37,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-15 20:44:37,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-11-15 20:44:37,300 INFO L87 Difference]: Start difference. First operand 111 states and 159 transitions. Second operand 14 states. [2019-11-15 20:44:38,432 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2019-11-15 20:44:39,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:44:39,987 INFO L93 Difference]: Finished difference Result 167 states and 236 transitions. [2019-11-15 20:44:40,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 20:44:40,341 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2019-11-15 20:44:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:44:40,342 INFO L225 Difference]: With dead ends: 167 [2019-11-15 20:44:40,343 INFO L226 Difference]: Without dead ends: 68 [2019-11-15 20:44:40,344 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2019-11-15 20:44:40,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-15 20:44:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-15 20:44:40,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-15 20:44:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2019-11-15 20:44:40,355 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 13 [2019-11-15 20:44:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:44:40,355 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2019-11-15 20:44:40,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-15 20:44:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2019-11-15 20:44:40,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 20:44:40,356 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:44:40,357 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:44:40,563 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 20:44:40,563 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:44:40,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:44:40,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1228186055, now seen corresponding path program 1 times [2019-11-15 20:44:40,564 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:44:40,564 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710416603] [2019-11-15 20:44:40,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/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 [2019-11-15 20:44:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:44:40,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 20:44:40,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:44:41,330 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-11-15 20:44:41,634 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-11-15 20:44:42,007 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-11-15 20:44:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:44:42,010 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 20:44:43,165 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2019-11-15 20:44:43,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:44:43,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710416603] [2019-11-15 20:44:43,169 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:44:43,169 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-15 20:44:43,169 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469293668] [2019-11-15 20:44:43,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 20:44:43,170 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 20:44:43,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 20:44:43,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-15 20:44:43,170 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand 10 states. [2019-11-15 20:44:43,925 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-11-15 20:44:45,132 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-15 20:44:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:44:46,474 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2019-11-15 20:44:46,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:44:46,475 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2019-11-15 20:44:46,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:44:46,476 INFO L225 Difference]: With dead ends: 72 [2019-11-15 20:44:46,476 INFO L226 Difference]: Without dead ends: 66 [2019-11-15 20:44:46,477 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-15 20:44:46,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-15 20:44:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2019-11-15 20:44:46,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-15 20:44:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2019-11-15 20:44:46,486 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 18 [2019-11-15 20:44:46,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:44:46,486 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2019-11-15 20:44:46,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 20:44:46,487 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2019-11-15 20:44:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-15 20:44:46,488 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:44:46,488 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:44:46,701 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 20:44:46,702 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:44:46,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:44:46,702 INFO L82 PathProgramCache]: Analyzing trace with hash 50256570, now seen corresponding path program 1 times [2019-11-15 20:44:46,703 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:44:46,704 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082423362] [2019-11-15 20:44:46,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-15 20:44:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:44:47,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 20:44:47,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:44:47,285 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-11-15 20:44:47,603 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-11-15 20:44:47,914 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-11-15 20:44:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:44:47,917 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 20:44:49,894 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2019-11-15 20:44:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:44:49,896 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082423362] [2019-11-15 20:44:49,896 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:44:49,897 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-15 20:44:49,897 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444031315] [2019-11-15 20:44:49,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 20:44:49,897 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 20:44:49,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 20:44:49,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-15 20:44:49,897 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand 10 states. [2019-11-15 20:44:50,402 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-11-15 20:44:51,292 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-11-15 20:44:51,559 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-15 20:44:52,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:44:52,642 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2019-11-15 20:44:52,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:44:52,655 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-11-15 20:44:52,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:44:52,656 INFO L225 Difference]: With dead ends: 70 [2019-11-15 20:44:52,657 INFO L226 Difference]: Without dead ends: 64 [2019-11-15 20:44:52,657 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-15 20:44:52,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-15 20:44:52,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2019-11-15 20:44:52,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-15 20:44:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2019-11-15 20:44:52,665 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 20 [2019-11-15 20:44:52,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:44:52,665 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2019-11-15 20:44:52,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 20:44:52,665 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2019-11-15 20:44:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-15 20:44:52,666 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:44:52,666 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:44:52,883 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-15 20:44:52,884 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:44:52,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:44:52,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1297758981, now seen corresponding path program 1 times [2019-11-15 20:44:52,884 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:44:52,884 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047989219] [2019-11-15 20:44:52,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-15 20:44:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:44:53,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 20:44:53,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:44:53,321 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:44:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:44:53,338 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 20:44:53,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:44:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:44:53,553 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047989219] [2019-11-15 20:44:53,553 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:44:53,553 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2019-11-15 20:44:53,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031128764] [2019-11-15 20:44:53,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 20:44:53,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 20:44:53,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 20:44:53,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-15 20:44:53,555 INFO L87 Difference]: Start difference. First operand 64 states and 80 transitions. Second operand 11 states. [2019-11-15 20:44:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:44:56,632 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2019-11-15 20:44:56,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 20:44:56,633 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2019-11-15 20:44:56,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:44:56,634 INFO L225 Difference]: With dead ends: 68 [2019-11-15 20:44:56,634 INFO L226 Difference]: Without dead ends: 59 [2019-11-15 20:44:56,635 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-11-15 20:44:56,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-15 20:44:56,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-15 20:44:56,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-15 20:44:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2019-11-15 20:44:56,648 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 21 [2019-11-15 20:44:56,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:44:56,648 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2019-11-15 20:44:56,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 20:44:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2019-11-15 20:44:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 20:44:56,650 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:44:56,650 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:44:56,865 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-15 20:44:56,865 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:44:56,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:44:56,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1649788032, now seen corresponding path program 1 times [2019-11-15 20:44:56,866 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:44:56,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808955330] [2019-11-15 20:44:56,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23b9dcc9-6cdc-4a04-b935-c9f98778e6f6/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-15 20:44:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:44:57,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 20:44:57,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:44:57,705 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-15 20:44:57,706 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 20:44:57,710 INFO L168 Benchmark]: Toolchain (without parser) took 60691.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 216.5 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -118.2 MB). Peak memory consumption was 98.3 MB. Max. memory is 11.5 GB. [2019-11-15 20:44:57,710 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:44:57,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 501.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -189.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-15 20:44:57,711 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:44:57,712 INFO L168 Benchmark]: Boogie Preprocessor took 59.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-15 20:44:57,712 INFO L168 Benchmark]: RCFGBuilder took 37044.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 78.6 MB). Peak memory consumption was 78.6 MB. Max. memory is 11.5 GB. [2019-11-15 20:44:57,712 INFO L168 Benchmark]: TraceAbstraction took 23022.54 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 57.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -13.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 11.5 GB. [2019-11-15 20:44:57,716 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 501.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -189.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 59.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 37044.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 78.6 MB). Peak memory consumption was 78.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 23022.54 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 57.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -13.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) RESULT: Ultimate could not prove your program: Toolchain returned no result. [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...