./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 34ebb1e4 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-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__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/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-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__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 0.1.24-34ebb1e [2019-11-21 16:07:11,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 16:07:11,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 16:07:11,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 16:07:11,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 16:07:11,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 16:07:11,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 16:07:11,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 16:07:11,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 16:07:11,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 16:07:11,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 16:07:11,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 16:07:11,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 16:07:11,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 16:07:11,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 16:07:11,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 16:07:11,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 16:07:11,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 16:07:11,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 16:07:11,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 16:07:11,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 16:07:11,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 16:07:11,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 16:07:11,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 16:07:11,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 16:07:11,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 16:07:11,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 16:07:11,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 16:07:11,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 16:07:11,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 16:07:11,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 16:07:11,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 16:07:11,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 16:07:11,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 16:07:11,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 16:07:11,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 16:07:11,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 16:07:11,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 16:07:11,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 16:07:11,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 16:07:11,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 16:07:11,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-21 16:07:11,526 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 16:07:11,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 16:07:11,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 16:07:11,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 16:07:11,528 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 16:07:11,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 16:07:11,529 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-21 16:07:11,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 16:07:11,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-21 16:07:11,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 16:07:11,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-21 16:07:11,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 16:07:11,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-21 16:07:11,531 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-21 16:07:11,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-21 16:07:11,531 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 16:07:11,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-21 16:07:11,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 16:07:11,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 16:07:11,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 16:07:11,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 16:07:11,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 16:07:11,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 16:07:11,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 16:07:11,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-21 16:07:11,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-21 16:07:11,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-21 16:07:11,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-21 16:07:11,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__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 [2019-11-21 16:07:11,850 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 16:07:11,864 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 16:07:11,867 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 16:07:11,869 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 16:07:11,870 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 16:07:11,870 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-21 16:07:11,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b79515f/1f94ba6e098e4541a2242f66b95badf5/FLAG6d91a8fed [2019-11-21 16:07:12,358 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 16:07:12,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-21 16:07:12,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b79515f/1f94ba6e098e4541a2242f66b95badf5/FLAG6d91a8fed [2019-11-21 16:07:12,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b79515f/1f94ba6e098e4541a2242f66b95badf5 [2019-11-21 16:07:12,740 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 16:07:12,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-21 16:07:12,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 16:07:12,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 16:07:12,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 16:07:12,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:07:12" (1/1) ... [2019-11-21 16:07:12,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5336134e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:12, skipping insertion in model container [2019-11-21 16:07:12,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:07:12" (1/1) ... [2019-11-21 16:07:12,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 16:07:12,786 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 16:07:13,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 16:07:13,044 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 16:07:13,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 16:07:13,095 INFO L205 MainTranslator]: Completed translation [2019-11-21 16:07:13,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:13 WrapperNode [2019-11-21 16:07:13,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 16:07:13,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-21 16:07:13,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-21 16:07:13,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-21 16:07:13,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:13" (1/1) ... [2019-11-21 16:07:13,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:13" (1/1) ... [2019-11-21 16:07:13,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-21 16:07:13,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 16:07:13,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 16:07:13,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 16:07:13,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:13" (1/1) ... [2019-11-21 16:07:13,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:13" (1/1) ... [2019-11-21 16:07:13,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:13" (1/1) ... [2019-11-21 16:07:13,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:13" (1/1) ... [2019-11-21 16:07:13,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:13" (1/1) ... [2019-11-21 16:07:13,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:13" (1/1) ... [2019-11-21 16:07:13,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:13" (1/1) ... [2019-11-21 16:07:13,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 16:07:13,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 16:07:13,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 16:07:13,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 16:07:13,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:13" (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 [2019-11-21 16:07:13,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 16:07:13,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 16:07:13,550 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 16:07:13,550 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-21 16:07:13,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:07:13 BoogieIcfgContainer [2019-11-21 16:07:13,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 16:07:13,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 16:07:13,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 16:07:13,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 16:07:13,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:07:12" (1/3) ... [2019-11-21 16:07:13,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45589913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:07:13, skipping insertion in model container [2019-11-21 16:07:13,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:13" (2/3) ... [2019-11-21 16:07:13,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45589913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:07:13, skipping insertion in model container [2019-11-21 16:07:13,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:07:13" (3/3) ... [2019-11-21 16:07:13,561 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-21 16:07:13,577 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 16:07:13,588 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-21 16:07:13,602 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-21 16:07:13,642 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 16:07:13,643 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-21 16:07:13,644 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 16:07:13,644 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 16:07:13,644 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 16:07:13,644 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 16:07:13,645 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 16:07:13,645 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 16:07:13,665 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-21 16:07:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-21 16:07:13,675 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:07:13,676 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-21 16:07:13,677 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]=== [2019-11-21 16:07:13,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:07:13,683 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-21 16:07:13,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-21 16:07:13,695 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193367744] [2019-11-21 16:07:13,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-21 16:07:13,764 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-21 16:07:13,764 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179555323] [2019-11-21 16:07:13,765 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 [2019-11-21 16:07:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 16:07:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 16:07:13,824 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-21 16:07:13,825 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-21 16:07:14,029 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-21 16:07:14,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:07:14 BoogieIcfgContainer [2019-11-21 16:07:14,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 16:07:14,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 16:07:14,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 16:07:14,049 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 16:07:14,051 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:07:13" (3/4) ... [2019-11-21 16:07:14,054 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-21 16:07:14,055 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 16:07:14,058 INFO L168 Benchmark]: Toolchain (without parser) took 1315.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -121.2 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2019-11-21 16:07:14,058 INFO L168 Benchmark]: CDTParser took 0.29 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. [2019-11-21 16:07:14,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.59 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 949.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-21 16:07:14,061 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -179.4 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2019-11-21 16:07:14,062 INFO L168 Benchmark]: Boogie Preprocessor took 26.06 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. [2019-11-21 16:07:14,063 INFO L168 Benchmark]: RCFGBuilder took 339.26 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-11-21 16:07:14,064 INFO L168 Benchmark]: TraceAbstraction took 495.68 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: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2019-11-21 16:07:14,065 INFO L168 Benchmark]: Witness Printer took 6.09 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. [2019-11-21 16:07:14,070 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 353.59 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 949.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 89.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -179.4 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.06 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 339.26 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 495.68 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: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * Witness Printer took 6.09 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: 0.4s, 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 0.1.24-34ebb1e [2019-11-21 16:07:16,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 16:07:16,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 16:07:16,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 16:07:16,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 16:07:16,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 16:07:16,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 16:07:16,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 16:07:16,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 16:07:16,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 16:07:16,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 16:07:16,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 16:07:16,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 16:07:16,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 16:07:16,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 16:07:16,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 16:07:16,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 16:07:16,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 16:07:16,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 16:07:16,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 16:07:16,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 16:07:16,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 16:07:16,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 16:07:16,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 16:07:16,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 16:07:16,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 16:07:16,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 16:07:16,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 16:07:16,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 16:07:16,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 16:07:16,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 16:07:16,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 16:07:16,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 16:07:16,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 16:07:16,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 16:07:16,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 16:07:16,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 16:07:16,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 16:07:16,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 16:07:16,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 16:07:16,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 16:07:16,063 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-21 16:07:16,082 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 16:07:16,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 16:07:16,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 16:07:16,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 16:07:16,085 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 16:07:16,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 16:07:16,086 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-21 16:07:16,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-21 16:07:16,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 16:07:16,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-21 16:07:16,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 16:07:16,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-21 16:07:16,088 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 16:07:16,089 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 16:07:16,089 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-21 16:07:16,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-21 16:07:16,090 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 16:07:16,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-21 16:07:16,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 16:07:16,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 16:07:16,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 16:07:16,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 16:07:16,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 16:07:16,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 16:07:16,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 16:07:16,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-21 16:07:16,093 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 16:07:16,093 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 16:07:16,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-21 16:07:16,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 16:07:16,094 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__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 [2019-11-21 16:07:16,472 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 16:07:16,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 16:07:16,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 16:07:16,489 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 16:07:16,490 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 16:07:16,490 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-21 16:07:16,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/613c6980f/c08f8ea8dfa047c49fea52b06dbb0546/FLAG4f77e166c [2019-11-21 16:07:16,942 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 16:07:16,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-21 16:07:16,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/613c6980f/c08f8ea8dfa047c49fea52b06dbb0546/FLAG4f77e166c [2019-11-21 16:07:17,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/613c6980f/c08f8ea8dfa047c49fea52b06dbb0546 [2019-11-21 16:07:17,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 16:07:17,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-21 16:07:17,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 16:07:17,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 16:07:17,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 16:07:17,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:07:17" (1/1) ... [2019-11-21 16:07:17,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78bb153b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:17, skipping insertion in model container [2019-11-21 16:07:17,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:07:17" (1/1) ... [2019-11-21 16:07:17,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 16:07:17,407 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 16:07:17,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 16:07:17,669 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 16:07:17,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 16:07:17,802 INFO L205 MainTranslator]: Completed translation [2019-11-21 16:07:17,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:17 WrapperNode [2019-11-21 16:07:17,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 16:07:17,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-21 16:07:17,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-21 16:07:17,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-21 16:07:17,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:17" (1/1) ... [2019-11-21 16:07:17,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:17" (1/1) ... [2019-11-21 16:07:17,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-21 16:07:17,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 16:07:17,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 16:07:17,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 16:07:17,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:17" (1/1) ... [2019-11-21 16:07:17,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:17" (1/1) ... [2019-11-21 16:07:17,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:17" (1/1) ... [2019-11-21 16:07:17,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:17" (1/1) ... [2019-11-21 16:07:17,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:17" (1/1) ... [2019-11-21 16:07:17,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:17" (1/1) ... [2019-11-21 16:07:17,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:17" (1/1) ... [2019-11-21 16:07:17,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 16:07:17,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 16:07:17,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 16:07:17,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 16:07:17,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:17" (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 [2019-11-21 16:07:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 16:07:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 16:07:29,192 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 16:07:29,193 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-21 16:07:29,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:07:29 BoogieIcfgContainer [2019-11-21 16:07:29,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 16:07:29,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 16:07:29,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 16:07:29,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 16:07:29,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:07:17" (1/3) ... [2019-11-21 16:07:29,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3174a453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:07:29, skipping insertion in model container [2019-11-21 16:07:29,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:07:17" (2/3) ... [2019-11-21 16:07:29,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3174a453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:07:29, skipping insertion in model container [2019-11-21 16:07:29,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:07:29" (3/3) ... [2019-11-21 16:07:29,202 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-21 16:07:29,211 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 16:07:29,223 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-21 16:07:29,231 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-21 16:07:29,254 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 16:07:29,254 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-21 16:07:29,254 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 16:07:29,254 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 16:07:29,255 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 16:07:29,255 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 16:07:29,255 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 16:07:29,255 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 16:07:29,270 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-21 16:07:29,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-21 16:07:29,275 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:07:29,276 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-21 16:07:29,277 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]=== [2019-11-21 16:07:29,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:07:29,282 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-21 16:07:29,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:07:29,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709760325] [2019-11-21 16:07:29,292 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 [2019-11-21 16:07:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 16:07:29,424 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 16:07:29,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:07:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:07:29,514 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:07:31,808 WARN L192 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-11-21 16:07:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:07:31,810 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709760325] [2019-11-21 16:07:31,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 16:07:31,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-21 16:07:31,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652084035] [2019-11-21 16:07:31,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 16:07:31,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:07:31,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 16:07:31,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-21 16:07:31,830 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2019-11-21 16:07:53,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:07:53,062 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2019-11-21 16:07:53,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 16:07:53,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-21 16:07:53,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:07:53,074 INFO L225 Difference]: With dead ends: 66 [2019-11-21 16:07:53,074 INFO L226 Difference]: Without dead ends: 33 [2019-11-21 16:07:53,078 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 [2019-11-21 16:07:53,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-21 16:07:53,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-11-21 16:07:53,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-21 16:07:53,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-11-21 16:07:53,112 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 4 [2019-11-21 16:07:53,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:07:53,112 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-11-21 16:07:53,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 16:07:53,113 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-11-21 16:07:53,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-21 16:07:53,113 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:07:53,113 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-21 16:07:53,316 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-21 16:07:53,317 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]=== [2019-11-21 16:07:53,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:07:53,318 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-21 16:07:53,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:07:53,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680754741] [2019-11-21 16:07:53,319 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 [2019-11-21 16:07:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 16:07:54,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 16:07:54,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 16:07:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:07:55,665 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 16:08:10,932 WARN L192 SmtUtils]: Spent 2.92 s on a formula simplification that was a NOOP. DAG size: 23 [2019-11-21 16:08:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 16:08:10,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680754741] [2019-11-21 16:08:10,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 16:08:10,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2019-11-21 16:08:10,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725596698] [2019-11-21 16:08:10,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-21 16:08:10,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 16:08:10,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-21 16:08:10,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2019-11-21 16:08:10,939 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2019-11-21 16:08:18,451 WARN L192 SmtUtils]: Spent 4.37 s on a formula simplification that was a NOOP. DAG size: 26 [2019-11-21 16:08:25,837 WARN L192 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 33 [2019-11-21 16:08:40,975 WARN L192 SmtUtils]: Spent 12.51 s on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-11-21 16:09:21,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 16:09:21,307 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2019-11-21 16:09:21,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-21 16:09:21,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-21 16:09:21,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 16:09:21,308 INFO L225 Difference]: With dead ends: 32 [2019-11-21 16:09:21,308 INFO L226 Difference]: Without dead ends: 29 [2019-11-21 16:09:21,310 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 44.6s TimeCoverageRelationStatistics Valid=32, Invalid=57, Unknown=1, NotChecked=0, Total=90 [2019-11-21 16:09:21,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-21 16:09:21,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2019-11-21 16:09:21,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-21 16:09:21,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-21 16:09:21,318 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 6 [2019-11-21 16:09:21,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 16:09:21,318 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-21 16:09:21,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-21 16:09:21,318 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-21 16:09:21,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-21 16:09:21,319 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 16:09:21,319 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 16:09:21,532 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-21 16:09:21,533 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]=== [2019-11-21 16:09:21,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 16:09:21,534 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-21 16:09:21,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 16:09:21,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305161591] [2019-11-21 16:09:21,536 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 [2019-11-21 16:09:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 16:09:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-21 16:09:24,541 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-21 16:09:24,542 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-21 16:09:24,742 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-21 16:09:24,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:09:24 BoogieIcfgContainer [2019-11-21 16:09:24,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-21 16:09:24,764 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-21 16:09:24,764 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-21 16:09:24,764 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-21 16:09:24,765 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:07:29" (3/4) ... [2019-11-21 16:09:24,767 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-21 16:09:24,815 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-21 16:09:24,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-21 16:09:24,817 INFO L168 Benchmark]: Toolchain (without parser) took 127447.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -69.8 MB). Peak memory consumption was 83.8 MB. Max. memory is 11.5 GB. [2019-11-21 16:09:24,818 INFO L168 Benchmark]: CDTParser took 0.27 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. [2019-11-21 16:09:24,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -182.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-21 16:09:24,820 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.56 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. [2019-11-21 16:09:24,820 INFO L168 Benchmark]: Boogie Preprocessor took 28.14 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. [2019-11-21 16:09:24,821 INFO L168 Benchmark]: RCFGBuilder took 11301.89 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: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2019-11-21 16:09:24,822 INFO L168 Benchmark]: TraceAbstraction took 115568.58 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: 86.9 MB). Peak memory consumption was 86.9 MB. Max. memory is 11.5 GB. [2019-11-21 16:09:24,822 INFO L168 Benchmark]: Witness Printer took 51.50 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. [2019-11-21 16:09:24,826 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 432.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -182.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.56 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 28.14 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 11301.89 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: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 115568.58 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: 86.9 MB). Peak memory consumption was 86.9 MB. Max. memory is 11.5 GB. * Witness Printer took 51.50 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: 115.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 91.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 33 SDslu, 77 SDs, 0 SdLazy, 76 SolverSat, 23 SolverUnsat, 15 SolverUnknown, 0 SolverNotchecked, 60.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 47.0s 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, 19.1s 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...