./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/freire2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 65a59966 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/freire2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 30689778d55a79f9fe352193122f8e3d18bcc1bb ................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/freire2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 30689778d55a79f9fe352193122f8e3d18bcc1bb ................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-65a5996 [2019-11-20 19:02:05,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 19:02:05,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 19:02:06,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 19:02:06,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 19:02:06,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 19:02:06,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 19:02:06,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 19:02:06,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 19:02:06,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 19:02:06,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 19:02:06,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 19:02:06,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 19:02:06,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 19:02:06,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 19:02:06,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 19:02:06,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 19:02:06,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 19:02:06,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 19:02:06,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 19:02:06,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 19:02:06,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 19:02:06,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 19:02:06,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 19:02:06,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 19:02:06,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 19:02:06,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 19:02:06,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 19:02:06,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 19:02:06,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 19:02:06,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 19:02:06,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 19:02:06,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 19:02:06,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 19:02:06,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 19:02:06,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 19:02:06,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 19:02:06,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 19:02:06,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 19:02:06,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 19:02:06,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 19:02:06,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2019-11-20 19:02:06,125 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 19:02:06,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 19:02:06,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 19:02:06,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 19:02:06,130 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 19:02:06,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 19:02:06,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 19:02:06,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 19:02:06,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 19:02:06,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 19:02:06,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 19:02:06,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 19:02:06,135 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 19:02:06,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 19:02:06,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 19:02:06,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 19:02:06,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 19:02:06,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 19:02:06,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 19:02:06,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 19:02:06,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 19:02:06,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 19:02:06,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 19:02:06,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 19:02:06,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 19:02:06,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 19:02:06,140 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-20 19:02:06,477 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 19:02:06,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 19:02:06,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 19:02:06,502 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 19:02:06,503 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 19:02:06,504 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-20 19:02:06,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/780e7d524/e188da4241344450abb53b5f4aa919e1/FLAGfa03970e4 [2019-11-20 19:02:07,033 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 19:02:07,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-20 19:02:07,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/780e7d524/e188da4241344450abb53b5f4aa919e1/FLAGfa03970e4 [2019-11-20 19:02:07,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/780e7d524/e188da4241344450abb53b5f4aa919e1 [2019-11-20 19:02:07,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 19:02:07,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 19:02:07,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 19:02:07,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 19:02:07,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 19:02:07,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:02:07" (1/1) ... [2019-11-20 19:02:07,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f931714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:07, skipping insertion in model container [2019-11-20 19:02:07,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:02:07" (1/1) ... [2019-11-20 19:02:07,415 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 19:02:07,433 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 19:02:07,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 19:02:07,598 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 19:02:07,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 19:02:07,636 INFO L192 MainTranslator]: Completed translation [2019-11-20 19:02:07,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:07 WrapperNode [2019-11-20 19:02:07,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 19:02:07,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 19:02:07,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 19:02:07,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 19:02:07,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:07" (1/1) ... [2019-11-20 19:02:07,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:07" (1/1) ... [2019-11-20 19:02:07,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 19:02:07,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 19:02:07,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 19:02:07,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 19:02:07,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:07" (1/1) ... [2019-11-20 19:02:07,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:07" (1/1) ... [2019-11-20 19:02:07,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:07" (1/1) ... [2019-11-20 19:02:07,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:07" (1/1) ... [2019-11-20 19:02:07,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:07" (1/1) ... [2019-11-20 19:02:07,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:07" (1/1) ... [2019-11-20 19:02:07,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:07" (1/1) ... [2019-11-20 19:02:07,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 19:02:07,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 19:02:07,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 19:02:07,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 19:02:07,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 19:02:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 19:02:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 19:02:08,044 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 19:02:08,046 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-20 19:02:08,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:02:08 BoogieIcfgContainer [2019-11-20 19:02:08,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 19:02:08,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 19:02:08,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 19:02:08,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 19:02:08,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:02:07" (1/3) ... [2019-11-20 19:02:08,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c64c71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:02:08, skipping insertion in model container [2019-11-20 19:02:08,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:07" (2/3) ... [2019-11-20 19:02:08,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c64c71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:02:08, skipping insertion in model container [2019-11-20 19:02:08,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:02:08" (3/3) ... [2019-11-20 19:02:08,075 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-20 19:02:08,100 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 19:02:08,113 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-20 19:02:08,143 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-20 19:02:08,177 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 19:02:08,177 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 19:02:08,177 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 19:02:08,178 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 19:02:08,178 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 19:02:08,178 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 19:02:08,178 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 19:02:08,179 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 19:02:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-20 19:02:08,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 19:02:08,200 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 19:02:08,201 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 19:02:08,202 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 19:02:08,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 19:02:08,209 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-20 19:02:08,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 19:02:08,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521902755] [2019-11-20 19:02:08,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 19:02:08,290 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 19:02:08,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314585119] [2019-11-20 19:02:08,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 19:02:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 19:02:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 19:02:08,352 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 19:02:08,353 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 19:02:08,555 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 19:02:08,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:02:08 BoogieIcfgContainer [2019-11-20 19:02:08,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 19:02:08,575 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 19:02:08,575 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 19:02:08,575 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 19:02:08,576 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:02:08" (3/4) ... [2019-11-20 19:02:08,580 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 19:02:08,580 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 19:02:08,583 INFO L168 Benchmark]: Toolchain (without parser) took 1183.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -117.8 MB). Peak memory consumption was 4.9 MB. Max. memory is 11.5 GB. [2019-11-20 19:02:08,584 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 19:02:08,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.34 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 19:02:08,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2019-11-20 19:02:08,590 INFO L168 Benchmark]: Boogie Preprocessor took 33.65 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-20 19:02:08,591 INFO L168 Benchmark]: RCFGBuilder took 290.67 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: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-11-20 19:02:08,592 INFO L168 Benchmark]: TraceAbstraction took 522.05 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: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-20 19:02:08,593 INFO L168 Benchmark]: Witness Printer took 5.62 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. [2019-11-20 19:02:08,599 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 238.34 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 88.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.65 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 290.67 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: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 522.05 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: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.62 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 28. Possible FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 0.1.24-65a5996 [2019-11-20 19:02:10,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 19:02:10,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 19:02:10,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 19:02:10,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 19:02:10,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 19:02:10,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 19:02:10,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 19:02:10,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 19:02:10,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 19:02:10,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 19:02:10,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 19:02:10,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 19:02:10,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 19:02:10,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 19:02:10,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 19:02:10,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 19:02:10,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 19:02:10,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 19:02:10,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 19:02:10,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 19:02:10,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 19:02:10,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 19:02:10,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 19:02:10,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 19:02:10,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 19:02:10,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 19:02:10,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 19:02:10,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 19:02:10,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 19:02:10,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 19:02:10,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 19:02:10,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 19:02:10,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 19:02:10,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 19:02:10,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 19:02:10,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 19:02:10,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 19:02:10,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 19:02:10,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 19:02:10,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 19:02:10,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2019-11-20 19:02:10,743 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 19:02:10,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 19:02:10,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 19:02:10,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 19:02:10,746 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 19:02:10,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 19:02:10,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 19:02:10,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 19:02:10,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 19:02:10,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 19:02:10,747 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 19:02:10,748 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 19:02:10,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 19:02:10,748 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 19:02:10,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 19:02:10,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 19:02:10,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 19:02:10,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 19:02:10,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 19:02:10,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 19:02:10,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 19:02:10,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 19:02:10,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 19:02:10,751 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 19:02:10,751 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 19:02:10,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 19:02:10,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 19:02:10,752 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2019-11-20 19:02:10,752 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-20 19:02:11,044 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 19:02:11,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 19:02:11,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 19:02:11,067 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 19:02:11,067 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 19:02:11,069 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-20 19:02:11,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e5d030d6/3b4b08fff3e44e6e908c8aaff2cc09c3/FLAG5b685f29c [2019-11-20 19:02:11,615 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 19:02:11,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-20 19:02:11,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e5d030d6/3b4b08fff3e44e6e908c8aaff2cc09c3/FLAG5b685f29c [2019-11-20 19:02:11,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e5d030d6/3b4b08fff3e44e6e908c8aaff2cc09c3 [2019-11-20 19:02:11,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 19:02:11,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 19:02:11,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 19:02:11,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 19:02:11,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 19:02:11,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:02:11" (1/1) ... [2019-11-20 19:02:11,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e10ea0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:11, skipping insertion in model container [2019-11-20 19:02:11,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:02:11" (1/1) ... [2019-11-20 19:02:12,007 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 19:02:12,026 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 19:02:12,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 19:02:12,221 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 19:02:12,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 19:02:12,332 INFO L192 MainTranslator]: Completed translation [2019-11-20 19:02:12,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:12 WrapperNode [2019-11-20 19:02:12,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 19:02:12,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 19:02:12,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 19:02:12,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 19:02:12,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:12" (1/1) ... [2019-11-20 19:02:12,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:12" (1/1) ... [2019-11-20 19:02:12,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 19:02:12,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 19:02:12,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 19:02:12,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 19:02:12,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:12" (1/1) ... [2019-11-20 19:02:12,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:12" (1/1) ... [2019-11-20 19:02:12,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:12" (1/1) ... [2019-11-20 19:02:12,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:12" (1/1) ... [2019-11-20 19:02:12,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:12" (1/1) ... [2019-11-20 19:02:12,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:12" (1/1) ... [2019-11-20 19:02:12,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:12" (1/1) ... [2019-11-20 19:02:12,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 19:02:12,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 19:02:12,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 19:02:12,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 19:02:12,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 19:02:12,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 19:02:12,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 19:02:23,413 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 19:02:23,414 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-20 19:02:23,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:02:23 BoogieIcfgContainer [2019-11-20 19:02:23,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 19:02:23,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 19:02:23,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 19:02:23,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 19:02:23,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:02:11" (1/3) ... [2019-11-20 19:02:23,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d70848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:02:23, skipping insertion in model container [2019-11-20 19:02:23,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:12" (2/3) ... [2019-11-20 19:02:23,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d70848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:02:23, skipping insertion in model container [2019-11-20 19:02:23,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:02:23" (3/3) ... [2019-11-20 19:02:23,424 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-20 19:02:23,431 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 19:02:23,438 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-20 19:02:23,449 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-20 19:02:23,472 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 19:02:23,473 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 19:02:23,473 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 19:02:23,473 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 19:02:23,473 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 19:02:23,474 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 19:02:23,474 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 19:02:23,474 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 19:02:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-20 19:02:23,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 19:02:23,495 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 19:02:23,495 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 19:02:23,496 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 19:02:23,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 19:02:23,503 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-20 19:02:23,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 19:02:23,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175174782] [2019-11-20 19:02:23,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-20 19:02:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 19:02:23,647 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 19:02:23,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 19:02:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 19:02:23,739 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 19:02:26,100 WARN L192 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-11-20 19:02:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 19:02:26,103 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175174782] [2019-11-20 19:02:26,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 19:02:26,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-20 19:02:26,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947761256] [2019-11-20 19:02:26,110 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 19:02:26,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 19:02:26,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 19:02:26,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 19:02:26,122 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2019-11-20 19:02:46,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 19:02:46,387 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2019-11-20 19:02:46,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 19:02:46,388 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-20 19:02:46,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 19:02:46,397 INFO L225 Difference]: With dead ends: 66 [2019-11-20 19:02:46,397 INFO L226 Difference]: Without dead ends: 33 [2019-11-20 19:02:46,400 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-20 19:02:46,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-20 19:02:46,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-11-20 19:02:46,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 19:02:46,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-11-20 19:02:46,433 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 4 [2019-11-20 19:02:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 19:02:46,433 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-11-20 19:02:46,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 19:02:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-11-20 19:02:46,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 19:02:46,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 19:02:46,434 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-20 19:02:46,635 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 19:02:46,636 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 19:02:46,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 19:02:46,637 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-20 19:02:46,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 19:02:46,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349688139] [2019-11-20 19:02:46,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-20 19:02:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 19:02:47,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 19:02:47,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 19:02:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 19:02:48,527 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 19:03:00,476 WARN L192 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 23 [2019-11-20 19:03:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 19:03:00,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349688139] [2019-11-20 19:03:00,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 19:03:00,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2019-11-20 19:03:00,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144793865] [2019-11-20 19:03:00,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 19:03:00,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 19:03:00,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 19:03:00,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 19:03:00,483 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2019-11-20 19:03:07,797 WARN L192 SmtUtils]: Spent 4.43 s on a formula simplification that was a NOOP. DAG size: 26 [2019-11-20 19:03:12,368 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~a~0) (or (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= (_ bv1 32) (bvadd (bvmul (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv4 32)) c_ULTIMATE.start_main_~r~0) c_ULTIMATE.start_main_~r~0) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv4 32)))) (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul roundNearestTiesToEven .cse0 c_ULTIMATE.start_main_~a~0))))))) is different from true [2019-11-20 19:03:25,773 WARN L192 SmtUtils]: Spent 11.25 s on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-11-20 19:04:03,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 19:04:03,206 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2019-11-20 19:04:03,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 19:04:03,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-20 19:04:03,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 19:04:03,209 INFO L225 Difference]: With dead ends: 32 [2019-11-20 19:04:03,209 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 19:04:03,211 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=27, Invalid=48, Unknown=1, NotChecked=14, Total=90 [2019-11-20 19:04:03,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 19:04:03,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2019-11-20 19:04:03,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-20 19:04:03,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-20 19:04:03,219 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 6 [2019-11-20 19:04:03,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 19:04:03,220 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-20 19:04:03,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 19:04:03,220 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-20 19:04:03,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 19:04:03,221 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 19:04:03,221 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 19:04:03,435 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-20 19:04:03,436 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 19:04:03,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 19:04:03,437 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-20 19:04:03,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 19:04:03,439 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734969924] [2019-11-20 19:04:03,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-20 19:04:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 19:04:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 19:04:06,586 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 19:04:06,586 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 19:04:06,787 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-20 19:04:06,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:04:06 BoogieIcfgContainer [2019-11-20 19:04:06,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 19:04:06,812 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 19:04:06,812 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 19:04:06,812 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 19:04:06,813 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:02:23" (3/4) ... [2019-11-20 19:04:06,822 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 19:04:06,902 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-20 19:04:06,913 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 19:04:06,916 INFO L168 Benchmark]: Toolchain (without parser) took 114928.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -72.0 MB). Peak memory consumption was 74.8 MB. Max. memory is 11.5 GB. [2019-11-20 19:04:06,918 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 19:04:06,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-20 19:04:06,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.37 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. [2019-11-20 19:04:06,925 INFO L168 Benchmark]: Boogie Preprocessor took 33.74 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. [2019-11-20 19:04:06,927 INFO L168 Benchmark]: RCFGBuilder took 10996.48 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: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2019-11-20 19:04:06,928 INFO L168 Benchmark]: TraceAbstraction took 103394.71 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: 82.9 MB). Peak memory consumption was 82.9 MB. Max. memory is 11.5 GB. [2019-11-20 19:04:06,929 INFO L168 Benchmark]: Witness Printer took 102.05 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. [2019-11-20 19:04:06,940 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 343.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.37 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 33.74 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. * RCFGBuilder took 10996.48 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: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 103394.71 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: 82.9 MB). Peak memory consumption was 82.9 MB. Max. memory is 11.5 GB. * Witness Printer took 102.05 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: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 6 error locations. Result: UNSAFE, OverallTime: 103.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 83.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 34 SDslu, 77 SDs, 0 SdLazy, 76 SolverSat, 20 SolverUnsat, 15 SolverUnknown, 0 SolverNotchecked, 57.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 37.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 819 SizeOfPredicates, 9 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...