./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/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 0.1.24-678e011 [2019-11-20 11:00:56,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:00:56,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:00:56,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:00:56,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:00:56,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:00:56,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:00:56,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:00:56,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:00:56,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:00:56,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:00:56,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:00:56,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:00:56,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:00:56,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:00:56,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:00:56,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:00:56,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:00:56,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:00:56,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:00:56,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:00:56,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:00:56,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:00:56,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:00:56,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:00:56,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:00:56,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:00:56,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:00:56,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:00:56,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:00:56,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:00:56,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:00:56,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:00:56,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:00:56,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:00:56,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:00:56,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:00:56,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:00:56,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:00:56,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:00:56,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:00:56,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2019-11-20 11:00:56,674 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:00:56,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:00:56,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:00:56,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:00:56,679 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:00:56,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:00:56,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 11:00:56,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:00:56,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 11:00:56,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:00:56,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 11:00:56,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 11:00:56,682 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:00:56,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 11:00:56,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:00:56,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:00:56,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:00:56,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 11:00:56,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:00:56,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:00:56,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:00:56,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 11:00:56,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 11:00:56,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 11:00:56,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 11:00:56,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 11:00:56,687 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-20 11:00:57,007 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:00:57,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:00:57,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:00:57,025 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:00:57,025 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:00:57,026 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-20 11:00:57,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b53eb9e/5ce829ca4a2f4724b680fb67523a3aa3/FLAG33b63c05d [2019-11-20 11:00:57,560 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:00:57,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-20 11:00:57,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b53eb9e/5ce829ca4a2f4724b680fb67523a3aa3/FLAG33b63c05d [2019-11-20 11:00:57,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b53eb9e/5ce829ca4a2f4724b680fb67523a3aa3 [2019-11-20 11:00:57,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:00:57,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 11:00:57,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:00:57,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:00:57,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:00:57,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:00:57" (1/1) ... [2019-11-20 11:00:57,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a0f889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:57, skipping insertion in model container [2019-11-20 11:00:57,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:00:57" (1/1) ... [2019-11-20 11:00:57,953 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:00:57,971 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:00:58,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:00:58,168 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:00:58,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:00:58,208 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:00:58,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58 WrapperNode [2019-11-20 11:00:58,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:00:58,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 11:00:58,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 11:00:58,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 11:00:58,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2019-11-20 11:00:58,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2019-11-20 11:00:58,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 11:00:58,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:00:58,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:00:58,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:00:58,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2019-11-20 11:00:58,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2019-11-20 11:00:58,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2019-11-20 11:00:58,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2019-11-20 11:00:58,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2019-11-20 11:00:58,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2019-11-20 11:00:58,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... [2019-11-20 11:00:58,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:00:58,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:00:58,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:00:58,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:00:58,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:00:58,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:00:58,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:00:58,618 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:00:58,618 INFO L285 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-20 11:00:58,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:00:58 BoogieIcfgContainer [2019-11-20 11:00:58,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:00:58,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 11:00:58,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 11:00:58,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 11:00:58,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:00:57" (1/3) ... [2019-11-20 11:00:58,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74715e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:00:58, skipping insertion in model container [2019-11-20 11:00:58,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:00:58" (2/3) ... [2019-11-20 11:00:58,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74715e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:00:58, skipping insertion in model container [2019-11-20 11:00:58,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:00:58" (3/3) ... [2019-11-20 11:00:58,628 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-20 11:00:58,639 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 11:00:58,654 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-20 11:00:58,688 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-20 11:00:58,726 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 11:00:58,726 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 11:00:58,726 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 11:00:58,726 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:00:58,727 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:00:58,727 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 11:00:58,727 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:00:58,727 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 11:00:58,745 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-20 11:00:58,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 11:00:58,752 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:00:58,753 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 11:00:58,753 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:00:58,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:00:58,761 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-20 11:00:58,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:00:58,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66538717] [2019-11-20 11:00:58,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:00:58,833 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 11:00:58,834 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527684030] [2019-11-20 11:00:58,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 11:00:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:00:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:00:58,891 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:00:58,892 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 11:00:59,093 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 11:00:59,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:00:59 BoogieIcfgContainer [2019-11-20 11:00:59,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 11:00:59,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:00:59,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:00:59,112 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:00:59,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:00:58" (3/4) ... [2019-11-20 11:00:59,117 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 11:00:59,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:00:59,120 INFO L168 Benchmark]: Toolchain (without parser) took 1183.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -93.7 MB). Peak memory consumption was 16.4 MB. Max. memory is 11.5 GB. [2019-11-20 11:00:59,121 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:00:59,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.82 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 11:00:59,124 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -150.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-20 11:00:59,124 INFO L168 Benchmark]: Boogie Preprocessor took 37.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:00:59,126 INFO L168 Benchmark]: RCFGBuilder took 277.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2019-11-20 11:00:59,127 INFO L168 Benchmark]: TraceAbstraction took 490.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-20 11:00:59,127 INFO L168 Benchmark]: Witness Printer took 5.98 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:00:59,136 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 271.82 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 95.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -150.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 277.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 490.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.98 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 28. Possible FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 11:01:01,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:01:01,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:01:01,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:01:01,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:01:01,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:01:01,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:01:01,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:01:01,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:01:01,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:01:01,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:01:01,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:01:01,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:01:01,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:01:01,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:01:01,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:01:01,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:01:01,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:01:01,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:01:01,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:01:01,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:01:01,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:01:01,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:01:01,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:01:01,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:01:01,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:01:01,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:01:01,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:01:01,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:01:01,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:01:01,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:01:01,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:01:01,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:01:01,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:01:01,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:01:01,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:01:01,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:01:01,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:01:01,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:01:01,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:01:01,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:01:01,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2019-11-20 11:01:01,154 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:01:01,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:01:01,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:01:01,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:01:01,165 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:01:01,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:01:01,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:01:01,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 11:01:01,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:01:01,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 11:01:01,167 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 11:01:01,167 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 11:01:01,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 11:01:01,168 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:01:01,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 11:01:01,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:01:01,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:01:01,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:01:01,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 11:01:01,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:01:01,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:01:01,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:01:01,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 11:01:01,170 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 11:01:01,171 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 11:01:01,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 11:01:01,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 11:01:01,172 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2019-11-20 11:01:01,172 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-20 11:01:01,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:01:01,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:01:01,518 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:01:01,519 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:01:01,520 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:01:01,521 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-20 11:01:01,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/252aa5736/e0392c095e6747d8ae43a582c1ceef2c/FLAGcd7e481e0 [2019-11-20 11:01:02,000 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:01:02,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-20 11:01:02,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/252aa5736/e0392c095e6747d8ae43a582c1ceef2c/FLAGcd7e481e0 [2019-11-20 11:01:02,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/252aa5736/e0392c095e6747d8ae43a582c1ceef2c [2019-11-20 11:01:02,416 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:01:02,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 11:01:02,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:01:02,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:01:02,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:01:02,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:01:02" (1/1) ... [2019-11-20 11:01:02,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77eae305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:01:02, skipping insertion in model container [2019-11-20 11:01:02,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:01:02" (1/1) ... [2019-11-20 11:01:02,435 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:01:02,453 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:01:02,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:01:02,731 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:01:02,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:01:02,884 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:01:02,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:01:02 WrapperNode [2019-11-20 11:01:02,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:01:02,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 11:01:02,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 11:01:02,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 11:01:02,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:01:02" (1/1) ... [2019-11-20 11:01:02,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:01:02" (1/1) ... [2019-11-20 11:01:02,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 11:01:02,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:01:02,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:01:02,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:01:02,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:01:02" (1/1) ... [2019-11-20 11:01:02,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:01:02" (1/1) ... [2019-11-20 11:01:02,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:01:02" (1/1) ... [2019-11-20 11:01:02,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:01:02" (1/1) ... [2019-11-20 11:01:02,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:01:02" (1/1) ... [2019-11-20 11:01:02,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:01:02" (1/1) ... [2019-11-20 11:01:02,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:01:02" (1/1) ... [2019-11-20 11:01:02,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:01:02,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:01:02,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:01:02,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:01:02,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:01:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:01:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:01:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:01:12,076 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:01:12,077 INFO L285 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-20 11:01:12,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:01:12 BoogieIcfgContainer [2019-11-20 11:01:12,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:01:12,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 11:01:12,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 11:01:12,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 11:01:12,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:01:02" (1/3) ... [2019-11-20 11:01:12,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae33978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:01:12, skipping insertion in model container [2019-11-20 11:01:12,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:01:02" (2/3) ... [2019-11-20 11:01:12,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae33978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:01:12, skipping insertion in model container [2019-11-20 11:01:12,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:01:12" (3/3) ... [2019-11-20 11:01:12,087 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-20 11:01:12,095 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 11:01:12,102 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-20 11:01:12,114 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-20 11:01:12,138 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 11:01:12,139 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 11:01:12,139 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 11:01:12,139 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:01:12,140 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:01:12,140 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 11:01:12,140 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:01:12,140 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 11:01:12,156 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-20 11:01:12,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 11:01:12,160 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:01:12,161 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 11:01:12,162 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:01:12,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:01:12,167 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-20 11:01:12,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:01:12,175 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507348871] [2019-11-20 11:01:12,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-20 11:01:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:01:12,308 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 11:01:12,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:01:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:01:12,401 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:01:14,473 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-11-20 11:01:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:01:14,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507348871] [2019-11-20 11:01:14,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:01:14,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-20 11:01:14,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456729255] [2019-11-20 11:01:14,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 11:01:14,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:01:14,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 11:01:14,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 11:01:14,497 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2019-11-20 11:01:35,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:01:35,838 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2019-11-20 11:01:35,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 11:01:35,839 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-20 11:01:35,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:01:35,848 INFO L225 Difference]: With dead ends: 66 [2019-11-20 11:01:35,848 INFO L226 Difference]: Without dead ends: 33 [2019-11-20 11:01:35,851 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-20 11:01:35,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-20 11:01:35,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-11-20 11:01:35,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 11:01:35,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-11-20 11:01:35,891 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 4 [2019-11-20 11:01:35,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:01:35,892 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-11-20 11:01:35,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 11:01:35,892 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-11-20 11:01:35,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 11:01:35,893 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:01:35,893 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-20 11:01:36,105 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 11:01:36,106 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:01:36,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:01:36,107 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-20 11:01:36,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:01:36,108 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191579615] [2019-11-20 11:01:36,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-20 11:01:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:01:37,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 11:01:37,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:01:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:01:37,859 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 11:01:52,464 WARN L191 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 23 [2019-11-20 11:01:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:01:52,468 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191579615] [2019-11-20 11:01:52,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:01:52,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2019-11-20 11:01:52,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841799434] [2019-11-20 11:01:52,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 11:01:52,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 11:01:52,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 11:01:52,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=18, Unknown=3, NotChecked=0, Total=30 [2019-11-20 11:01:52,472 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2019-11-20 11:02:02,603 WARN L191 SmtUtils]: Spent 5.09 s on a formula simplification that was a NOOP. DAG size: 26 [2019-11-20 11:02:12,050 WARN L191 SmtUtils]: Spent 5.47 s on a formula simplification that was a NOOP. DAG size: 33 [2019-11-20 11:02:14,666 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (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)) .cse0) (= (_ 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 ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv4 32)))) (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse1 c_ULTIMATE.start_main_~x~0) (fp.mul roundNearestTiesToEven .cse1 c_ULTIMATE.start_main_~a~0)))))) (not .cse0))) is different from true [2019-11-20 11:03:07,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:03:07,467 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-11-20 11:03:07,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 11:03:07,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-20 11:03:07,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:03:07,513 INFO L225 Difference]: With dead ends: 31 [2019-11-20 11:03:07,513 INFO L226 Difference]: Without dead ends: 28 [2019-11-20 11:03:07,514 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 35.9s TimeCoverageRelationStatistics Valid=25, Invalid=46, Unknown=5, NotChecked=14, Total=90 [2019-11-20 11:03:07,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-20 11:03:07,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-11-20 11:03:07,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-20 11:03:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-20 11:03:07,523 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 6 [2019-11-20 11:03:07,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:03:07,524 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-20 11:03:07,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 11:03:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-20 11:03:07,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 11:03:07,525 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:03:07,525 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:03:07,740 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-20 11:03:07,741 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:03:07,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:03:07,743 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-20 11:03:07,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 11:03:07,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755924894] [2019-11-20 11:03:07,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-20 11:03:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:03:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:03:10,867 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 11:03:10,868 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 11:03:11,068 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-20 11:03:11,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:03:11 BoogieIcfgContainer [2019-11-20 11:03:11,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 11:03:11,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:03:11,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:03:11,092 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:03:11,093 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:01:12" (3/4) ... [2019-11-20 11:03:11,095 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 11:03:11,134 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-20 11:03:11,135 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:03:11,137 INFO L168 Benchmark]: Toolchain (without parser) took 128719.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 961.7 MB in the beginning and 990.4 MB in the end (delta: -28.7 MB). Peak memory consumption was 86.1 MB. Max. memory is 11.5 GB. [2019-11-20 11:03:11,138 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. [2019-11-20 11:03:11,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -142.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-20 11:03:11,139 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.43 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:03:11,140 INFO L168 Benchmark]: Boogie Preprocessor took 29.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:03:11,141 INFO L168 Benchmark]: RCFGBuilder took 9102.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2019-11-20 11:03:11,141 INFO L168 Benchmark]: TraceAbstraction took 119012.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 997.3 MB in the end (delta: 79.2 MB). Peak memory consumption was 79.2 MB. Max. memory is 11.5 GB. [2019-11-20 11:03:11,142 INFO L168 Benchmark]: Witness Printer took 43.01 ms. Allocated memory is still 1.1 GB. Free memory was 997.3 MB in the beginning and 990.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-20 11:03:11,146 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 467.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -142.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.43 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 9102.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 119012.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 997.3 MB in the end (delta: 79.2 MB). Peak memory consumption was 79.2 MB. Max. memory is 11.5 GB. * Witness Printer took 43.01 ms. Allocated memory is still 1.1 GB. Free memory was 997.3 MB in the beginning and 990.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. 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: 118.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 96.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 35 SDslu, 66 SDs, 0 SdLazy, 83 SolverSat, 21 SolverUnsat, 19 SolverUnknown, 0 SolverNotchecked, 73.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 38.1s 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, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 17.5s 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... 9 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...