./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/freire2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/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 30689778d55a79f9fe352193122f8e3d18bcc1bb .................................................................................................................................................................................................................................. 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_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/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 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 0.1.24-678e011 [2019-11-19 22:09:44,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:09:44,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:09:44,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:09:44,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:09:44,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:09:44,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:09:44,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:09:44,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:09:44,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:09:44,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:09:44,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:09:44,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:09:44,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:09:44,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:09:44,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:09:44,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:09:44,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:09:44,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:09:44,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:09:44,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:09:44,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:09:44,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:09:44,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:09:44,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:09:44,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:09:44,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:09:44,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:09:44,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:09:44,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:09:44,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:09:44,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:09:44,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:09:44,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:09:44,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:09:44,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:09:44,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:09:44,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:09:44,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:09:44,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:09:44,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:09:44,349 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 22:09:44,373 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:09:44,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:09:44,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:09:44,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:09:44,386 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:09:44,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:09:44,386 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:09:44,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:09:44,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:09:44,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:09:44,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 22:09:44,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:09:44,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 22:09:44,388 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:09:44,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:09:44,388 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:09:44,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 22:09:44,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:09:44,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:09:44,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:09:44,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:09:44,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:09:44,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:09:44,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:09:44,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 22:09:44,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:09:44,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 22:09:44,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 22:09:44,393 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_b9432126-3064-4eab-a98c-e321da81f6fc/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 -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-19 22:09:44,560 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:09:44,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:09:44,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:09:44,579 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:09:44,579 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:09:44,580 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-19 22:09:44,638 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/data/2c4b256f9/7c933a2f7cb84eed8bf33c6b376b7b68/FLAGf20bbee08 [2019-11-19 22:09:45,014 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:09:45,015 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-19 22:09:45,021 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/data/2c4b256f9/7c933a2f7cb84eed8bf33c6b376b7b68/FLAGf20bbee08 [2019-11-19 22:09:45,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/data/2c4b256f9/7c933a2f7cb84eed8bf33c6b376b7b68 [2019-11-19 22:09:45,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:09:45,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:09:45,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:09:45,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:09:45,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:09:45,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:09:45" (1/1) ... [2019-11-19 22:09:45,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a5dfa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:45, skipping insertion in model container [2019-11-19 22:09:45,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:09:45" (1/1) ... [2019-11-19 22:09:45,423 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:09:45,440 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:09:45,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:09:45,684 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:09:45,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:09:45,739 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:09:45,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:45 WrapperNode [2019-11-19 22:09:45,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:09:45,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:09:45,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:09:45,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:09:45,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:45" (1/1) ... [2019-11-19 22:09:45,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:45" (1/1) ... [2019-11-19 22:09:45,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:09:45,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:09:45,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:09:45,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:09:45,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:45" (1/1) ... [2019-11-19 22:09:45,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:45" (1/1) ... [2019-11-19 22:09:45,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:45" (1/1) ... [2019-11-19 22:09:45,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:45" (1/1) ... [2019-11-19 22:09:45,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:45" (1/1) ... [2019-11-19 22:09:45,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:45" (1/1) ... [2019-11-19 22:09:45,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:45" (1/1) ... [2019-11-19 22:09:45,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:09:45,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:09:45,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:09:45,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:09:45,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/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 [2019-11-19 22:09:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:09:45,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:09:46,260 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:09:46,261 INFO L285 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-19 22:09:46,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:09:46 BoogieIcfgContainer [2019-11-19 22:09:46,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:09:46,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:09:46,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:09:46,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:09:46,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:09:45" (1/3) ... [2019-11-19 22:09:46,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743dc83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:09:46, skipping insertion in model container [2019-11-19 22:09:46,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:45" (2/3) ... [2019-11-19 22:09:46,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743dc83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:09:46, skipping insertion in model container [2019-11-19 22:09:46,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:09:46" (3/3) ... [2019-11-19 22:09:46,277 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-19 22:09:46,286 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:09:46,293 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-19 22:09:46,312 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-19 22:09:46,337 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:09:46,338 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 22:09:46,338 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:09:46,338 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:09:46,338 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:09:46,338 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:09:46,339 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:09:46,339 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:09:46,353 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-19 22:09:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-19 22:09:46,358 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:46,358 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-19 22:09:46,359 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]=== [2019-11-19 22:09:46,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:46,364 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-19 22:09:46,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:09:46,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574845235] [2019-11-19 22:09:46,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:09:46,431 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-19 22:09:46,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687690993] [2019-11-19 22:09:46,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/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 [2019-11-19 22:09:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:09:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:09:46,481 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:09:46,481 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 22:09:46,682 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:09:46,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:09:46 BoogieIcfgContainer [2019-11-19 22:09:46,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:09:46,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:09:46,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:09:46,698 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:09:46,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:09:46" (3/4) ... [2019-11-19 22:09:46,701 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 22:09:46,701 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:09:46,703 INFO L168 Benchmark]: Toolchain (without parser) took 1296.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 744.4 kB. Max. memory is 11.5 GB. [2019-11-19 22:09:46,704 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:09:46,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -223.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-19 22:09:46,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:09:46,706 INFO L168 Benchmark]: Boogie Preprocessor took 47.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:09:46,706 INFO L168 Benchmark]: RCFGBuilder took 439.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:09:46,707 INFO L168 Benchmark]: TraceAbstraction took 433.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2019-11-19 22:09:46,708 INFO L168 Benchmark]: Witness Printer took 4.05 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:09:46,711 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 329.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -223.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 439.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 433.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.05 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: 5.4 MB). Peak memory consumption was 5.4 MB. 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 0.1.24-678e011 [2019-11-19 22:09:48,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:09:48,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:09:48,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:09:48,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:09:48,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:09:48,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:09:48,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:09:48,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:09:48,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:09:48,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:09:48,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:09:48,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:09:48,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:09:48,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:09:48,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:09:48,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:09:48,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:09:48,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:09:48,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:09:48,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:09:48,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:09:48,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:09:48,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:09:48,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:09:48,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:09:48,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:09:48,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:09:48,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:09:48,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:09:48,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:09:48,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:09:48,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:09:48,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:09:48,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:09:48,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:09:48,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:09:48,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:09:48,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:09:48,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:09:48,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:09:48,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-19 22:09:48,639 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:09:48,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:09:48,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:09:48,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:09:48,640 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:09:48,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:09:48,641 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:09:48,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:09:48,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:09:48,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 22:09:48,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:09:48,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 22:09:48,642 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 22:09:48,643 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 22:09:48,643 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:09:48,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:09:48,643 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:09:48,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 22:09:48,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:09:48,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:09:48,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:09:48,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:09:48,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:09:48,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:09:48,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:09:48,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 22:09:48,646 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 22:09:48,646 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 22:09:48,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 22:09:48,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 22:09:48,647 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_b9432126-3064-4eab-a98c-e321da81f6fc/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 -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-19 22:09:48,930 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:09:48,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:09:48,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:09:48,952 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:09:48,953 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:09:48,954 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-19 22:09:49,014 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/data/b73e084ff/c575607e2252491e9e1708a700955b01/FLAG32f5a871f [2019-11-19 22:09:49,352 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:09:49,352 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-19 22:09:49,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/data/b73e084ff/c575607e2252491e9e1708a700955b01/FLAG32f5a871f [2019-11-19 22:09:49,744 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/data/b73e084ff/c575607e2252491e9e1708a700955b01 [2019-11-19 22:09:49,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:09:49,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:09:49,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:09:49,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:09:49,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:09:49,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:09:49" (1/1) ... [2019-11-19 22:09:49,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1440216e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:49, skipping insertion in model container [2019-11-19 22:09:49,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:09:49" (1/1) ... [2019-11-19 22:09:49,785 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:09:49,800 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:09:49,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:09:49,992 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:09:50,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:09:50,032 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:09:50,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:50 WrapperNode [2019-11-19 22:09:50,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:09:50,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:09:50,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:09:50,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:09:50,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:50" (1/1) ... [2019-11-19 22:09:50,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:50" (1/1) ... [2019-11-19 22:09:50,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:09:50,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:09:50,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:09:50,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:09:50,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:50" (1/1) ... [2019-11-19 22:09:50,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:50" (1/1) ... [2019-11-19 22:09:50,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:50" (1/1) ... [2019-11-19 22:09:50,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:50" (1/1) ... [2019-11-19 22:09:50,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:50" (1/1) ... [2019-11-19 22:09:50,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:50" (1/1) ... [2019-11-19 22:09:50,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:50" (1/1) ... [2019-11-19 22:09:50,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:09:50,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:09:50,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:09:50,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:09:50,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/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 [2019-11-19 22:09:50,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:09:50,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:09:59,909 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:09:59,910 INFO L285 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-19 22:09:59,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:09:59 BoogieIcfgContainer [2019-11-19 22:09:59,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:09:59,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:09:59,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:09:59,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:09:59,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:09:49" (1/3) ... [2019-11-19 22:09:59,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0346d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:09:59, skipping insertion in model container [2019-11-19 22:09:59,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:09:50" (2/3) ... [2019-11-19 22:09:59,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0346d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:09:59, skipping insertion in model container [2019-11-19 22:09:59,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:09:59" (3/3) ... [2019-11-19 22:09:59,918 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-19 22:09:59,926 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:09:59,931 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-19 22:09:59,940 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-19 22:09:59,958 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:09:59,958 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 22:09:59,958 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:09:59,958 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:09:59,959 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:09:59,959 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:09:59,959 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:09:59,959 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:09:59,971 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-19 22:09:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-19 22:09:59,975 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:09:59,975 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-19 22:09:59,976 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]=== [2019-11-19 22:09:59,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:09:59,980 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-19 22:09:59,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:09:59,988 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850029706] [2019-11-19 22:09:59,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/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 [2019-11-19 22:10:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:10:00,107 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 22:10:00,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:10:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:10:00,186 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:10:02,209 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-11-19 22:10:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:10:02,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850029706] [2019-11-19 22:10:02,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:10:02,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-19 22:10:02,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055064386] [2019-11-19 22:10:02,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 22:10:02,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:10:02,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 22:10:02,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 22:10:02,229 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2019-11-19 22:10:21,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:10:21,759 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2019-11-19 22:10:21,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:10:21,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-19 22:10:21,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:10:21,770 INFO L225 Difference]: With dead ends: 66 [2019-11-19 22:10:21,770 INFO L226 Difference]: Without dead ends: 33 [2019-11-19 22:10:21,773 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:10:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-19 22:10:21,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-11-19 22:10:21,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-19 22:10:21,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-11-19 22:10:21,807 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 4 [2019-11-19 22:10:21,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:10:21,808 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-11-19 22:10:21,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 22:10:21,808 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-11-19 22:10:21,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-19 22:10:21,809 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:10:21,809 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-19 22:10:22,023 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-19 22:10:22,024 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]=== [2019-11-19 22:10:22,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:10:22,024 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-19 22:10:22,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:10:22,025 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814040227] [2019-11-19 22:10:22,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/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 [2019-11-19 22:10:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:10:22,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 22:10:22,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:10:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:10:24,096 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:10:38,248 WARN L191 SmtUtils]: Spent 2.59 s on a formula simplification that was a NOOP. DAG size: 23 [2019-11-19 22:10:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:10:38,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814040227] [2019-11-19 22:10:38,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:10:38,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2019-11-19 22:10:38,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375868120] [2019-11-19 22:10:38,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 22:10:38,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:10:38,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 22:10:38,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2019-11-19 22:10:38,253 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2019-11-19 22:10:45,393 WARN L191 SmtUtils]: Spent 4.29 s on a formula simplification that was a NOOP. DAG size: 26 [2019-11-19 22:10:49,504 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 [2019-11-19 22:11:07,934 WARN L191 SmtUtils]: Spent 15.99 s on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-11-19 22:11:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:11:45,137 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2019-11-19 22:11:45,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 22:11:45,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-19 22:11:45,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:11:45,139 INFO L225 Difference]: With dead ends: 32 [2019-11-19 22:11:45,139 INFO L226 Difference]: Without dead ends: 29 [2019-11-19 22:11:45,140 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 43.2s TimeCoverageRelationStatistics Valid=27, Invalid=46, Unknown=3, NotChecked=14, Total=90 [2019-11-19 22:11:45,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-19 22:11:45,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2019-11-19 22:11:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-19 22:11:45,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-19 22:11:45,147 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 6 [2019-11-19 22:11:45,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:11:45,148 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-19 22:11:45,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 22:11:45,148 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-19 22:11:45,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-19 22:11:45,148 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:11:45,149 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:11:45,352 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-19 22:11:45,356 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]=== [2019-11-19 22:11:45,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:11:45,357 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-19 22:11:45,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:11:45,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150670411] [2019-11-19 22:11:45,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/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 [2019-11-19 22:11:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:11:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:11:48,501 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-19 22:11:48,501 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 22:11:48,701 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-19 22:11:48,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:11:48 BoogieIcfgContainer [2019-11-19 22:11:48,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:11:48,717 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:11:48,717 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:11:48,718 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:11:48,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:09:59" (3/4) ... [2019-11-19 22:11:48,720 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 22:11:48,785 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b9432126-3064-4eab-a98c-e321da81f6fc/bin/uautomizer/witness.graphml [2019-11-19 22:11:48,786 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:11:48,790 INFO L168 Benchmark]: Toolchain (without parser) took 119031.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 961.8 MB in the beginning and 1.0 GB in the end (delta: -73.4 MB). Peak memory consumption was 79.1 MB. Max. memory is 11.5 GB. [2019-11-19 22:11:48,796 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:11:48,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.43 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-19 22:11:48,798 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:11:48,798 INFO L168 Benchmark]: Boogie Preprocessor took 38.63 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. [2019-11-19 22:11:48,799 INFO L168 Benchmark]: RCFGBuilder took 9753.63 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: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-11-19 22:11:48,799 INFO L168 Benchmark]: TraceAbstraction took 108805.17 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: 81.4 MB). Peak memory consumption was 81.4 MB. Max. memory is 11.5 GB. [2019-11-19 22:11:48,800 INFO L168 Benchmark]: Witness Printer took 68.74 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. [2019-11-19 22:11:48,802 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 276.43 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.0 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 84.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.63 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 9753.63 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: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 108805.17 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: 81.4 MB). Peak memory consumption was 81.4 MB. Max. memory is 11.5 GB. * Witness Printer took 68.74 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: 108.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 86.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 34 SDslu, 77 SDs, 0 SdLazy, 78 SolverSat, 20 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 55.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 45.3s 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, 2.4s SatisfiabilityAnalysisTime, 17.4s 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...