./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/ps3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/ps3.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0eae65bd4a214f811a2a4c3e828509d9c15c014 ............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:00,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:00,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:00,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:00,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:00,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:00,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:00,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:00,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:00,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:00,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:00,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:00,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:00,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:00,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:00,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:00,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:00,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:00,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:00,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:00,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:00,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:00,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:00,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:00,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:00,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:00,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:00,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:00,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:00,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:00,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:00,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:00,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:00,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:00,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:00,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:00,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:00,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:00,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:00,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:00,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:00,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:25:00,169 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:00,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:00,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:00,172 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:00,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:00,172 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:00,172 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:00,173 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:00,173 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:00,173 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:00,173 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:00,174 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:00,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:00,175 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:00,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:00,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:00,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:00,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:00,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:00,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:00,176 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:00,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:00,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:00,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:00,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:00,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:00,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:00,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:00,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:00,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:00,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:00,178 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:00,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:00,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:00,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:00,179 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan 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 -> Taipan 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 -> a0eae65bd4a214f811a2a4c3e828509d9c15c014 [2019-10-22 11:25:00,229 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:00,242 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:00,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:00,248 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:00,248 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:00,249 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan/../../sv-benchmarks/c/nla-digbench/ps3.c [2019-10-22 11:25:00,310 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan/data/8677222c5/3c6255056ee64f42b1e59df25a3f7a2a/FLAG0bf99db96 [2019-10-22 11:25:00,720 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:00,720 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/sv-benchmarks/c/nla-digbench/ps3.c [2019-10-22 11:25:00,726 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan/data/8677222c5/3c6255056ee64f42b1e59df25a3f7a2a/FLAG0bf99db96 [2019-10-22 11:25:01,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan/data/8677222c5/3c6255056ee64f42b1e59df25a3f7a2a [2019-10-22 11:25:01,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:01,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:01,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:01,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:01,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:01,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:01" (1/1) ... [2019-10-22 11:25:01,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb7bd26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:01, skipping insertion in model container [2019-10-22 11:25:01,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:01" (1/1) ... [2019-10-22 11:25:01,089 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:01,107 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:01,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:01,315 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:01,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:01,418 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:01,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:01 WrapperNode [2019-10-22 11:25:01,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:01,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:01,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:01,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:01,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:01" (1/1) ... [2019-10-22 11:25:01,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:01" (1/1) ... [2019-10-22 11:25:01,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:01,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:01,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:01,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:01,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:01" (1/1) ... [2019-10-22 11:25:01,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:01" (1/1) ... [2019-10-22 11:25:01,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:01" (1/1) ... [2019-10-22 11:25:01,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:01" (1/1) ... [2019-10-22 11:25:01,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:01" (1/1) ... [2019-10-22 11:25:01,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:01" (1/1) ... [2019-10-22 11:25:01,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:01" (1/1) ... [2019-10-22 11:25:01,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:01,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:01,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:01,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:01,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan/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 [2019-10-22 11:25:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:01,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:01,760 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:01,761 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-22 11:25:01,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:01 BoogieIcfgContainer [2019-10-22 11:25:01,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:01,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:01,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:01,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:01,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:01" (1/3) ... [2019-10-22 11:25:01,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a79496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:01, skipping insertion in model container [2019-10-22 11:25:01,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:01" (2/3) ... [2019-10-22 11:25:01,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a79496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:01, skipping insertion in model container [2019-10-22 11:25:01,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:01" (3/3) ... [2019-10-22 11:25:01,774 INFO L109 eAbstractionObserver]: Analyzing ICFG ps3.c [2019-10-22 11:25:01,782 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:01,789 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 11:25:01,802 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 11:25:01,832 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:01,832 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:01,832 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:01,832 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:01,832 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:01,832 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:01,833 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:01,833 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-10-22 11:25:01,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 11:25:01,851 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:01,852 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 11:25:01,854 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:01,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:01,860 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-10-22 11:25:01,871 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:01,871 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249216538] [2019-10-22 11:25:01,872 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:01,872 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:01,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:01,951 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 11:25:01,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398966506] [2019-10-22 11:25:01,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan/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 [2019-10-22 11:25:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:01,988 WARN L254 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 11:25:01,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:02,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:02,045 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:02,089 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249216538] [2019-10-22 11:25:02,090 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 11:25:02,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398966506] [2019-10-22 11:25:02,091 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:02,091 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-10-22 11:25:02,091 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151905557] [2019-10-22 11:25:02,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:25:02,098 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:02,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:25:02,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:25:02,116 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 6 states. [2019-10-22 11:25:02,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:02,224 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2019-10-22 11:25:02,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:25:02,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-10-22 11:25:02,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:02,234 INFO L225 Difference]: With dead ends: 32 [2019-10-22 11:25:02,234 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:25:02,238 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:25:02,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:25:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:25:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:25:02,260 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-10-22 11:25:02,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:02,260 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:25:02,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:25:02,260 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:25:02,260 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:25:02,461 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:25:02,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:25:02,607 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2019-10-22 11:25:02,689 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:25:02,690 INFO L439 ceAbstractionStarter]: At program point L31(lines 12 32) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* (* ULTIMATE.start_main_~y~0 3) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0 (* (* (* ULTIMATE.start_main_~y~0 2) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (* 6 ULTIMATE.start_main_~x~0))) [2019-10-22 11:25:02,690 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-10-22 11:25:02,690 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-10-22 11:25:02,690 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 8) no Hoare annotation was computed. [2019-10-22 11:25:02,690 INFO L439 ceAbstractionStarter]: At program point L5-2(lines 23 24) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* (* ULTIMATE.start_main_~y~0 3) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0 (* (* (* ULTIMATE.start_main_~y~0 2) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (* 6 ULTIMATE.start_main_~x~0))) [2019-10-22 11:25:02,691 INFO L443 ceAbstractionStarter]: For program point L5-3(lines 5 8) no Hoare annotation was computed. [2019-10-22 11:25:02,691 INFO L439 ceAbstractionStarter]: At program point L5-5(lines 4 10) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* (* ULTIMATE.start_main_~y~0 3) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0 (* (* (* ULTIMATE.start_main_~y~0 2) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (* 6 ULTIMATE.start_main_~x~0))) [2019-10-22 11:25:02,691 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:25:02,691 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:25:02,691 INFO L439 ceAbstractionStarter]: At program point L20-2(lines 20 29) the Hoare annotation is: (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* (* ULTIMATE.start_main_~y~0 3) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0 (* (* (* ULTIMATE.start_main_~y~0 2) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (* 6 ULTIMATE.start_main_~x~0))) (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0))) [2019-10-22 11:25:02,691 INFO L443 ceAbstractionStarter]: For program point L20-3(lines 20 29) no Hoare annotation was computed. [2019-10-22 11:25:02,693 INFO L443 ceAbstractionStarter]: For program point L6(lines 6 7) no Hoare annotation was computed. [2019-10-22 11:25:02,693 INFO L443 ceAbstractionStarter]: For program point L6-1(lines 6 7) no Hoare annotation was computed. [2019-10-22 11:25:02,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:25:02 BoogieIcfgContainer [2019-10-22 11:25:02,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:25:02,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:25:02,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:25:02,712 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:25:02,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:01" (3/4) ... [2019-10-22 11:25:02,716 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:25:02,727 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 11:25:02,728 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:25:02,771 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b7632a53-5f38-413c-8fe3-2267343ffd7f/bin/utaipan/witness.graphml [2019-10-22 11:25:02,771 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:25:02,773 INFO L168 Benchmark]: Toolchain (without parser) took 1701.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -113.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:02,774 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:02,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:02,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.92 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:02,776 INFO L168 Benchmark]: Boogie Preprocessor took 38.47 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. [2019-10-22 11:25:02,776 INFO L168 Benchmark]: RCFGBuilder took 258.45 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:02,777 INFO L168 Benchmark]: TraceAbstraction took 948.01 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: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:02,777 INFO L168 Benchmark]: Witness Printer took 59.83 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:02,780 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 345.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.92 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.47 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 258.45 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 948.01 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: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 11.5 GB. * Witness Printer took 59.83 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 == cond && y * 3 * y + y + y * 2 * y * y == 6 * x - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 == cond && y * 3 * y + y + y * 2 * y * y == 6 * x - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (1 == cond && y * 3 * y + y + y * 2 * y * y == 6 * x) || (x == 0 && y == 0) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 == cond && y * 3 * y + y + y * 2 * y * y == 6 * x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 2 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 5 SDtfs, 37 SDslu, 5 SDs, 0 SdLazy, 11 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 96 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 102 SizeOfPredicates, 4 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 correct! Received shutdown request...