./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/ps2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/ps2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08b118cfc5ed15a7af497a71835167b40ccdb413 ...................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:42:34,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:42:34,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:42:34,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:42:34,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:42:34,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:42:34,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:42:34,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:42:34,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:42:34,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:42:34,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:42:34,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:42:34,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:42:34,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:42:34,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:42:34,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:42:34,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:42:34,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:42:34,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:42:34,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:42:34,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:42:34,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:42:34,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:42:34,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:42:34,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:42:34,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:42:34,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:42:34,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:42:34,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:42:34,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:42:34,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:42:34,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:42:34,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:42:34,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:42:34,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:42:34,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:42:34,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:42:34,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:42:34,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:42:34,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:42:34,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:42:34,667 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 15:42:34,676 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:42:34,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:42:34,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:42:34,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:42:34,677 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:42:34,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:42:34,678 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:42:34,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:42:34,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:42:34,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:42:34,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:42:34,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:42:34,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:42:34,679 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:42:34,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:42:34,679 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:42:34,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:42:34,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:42:34,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:42:34,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:42:34,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:42:34,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:42:34,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:42:34,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:42:34,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:42:34,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:42:34,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:42:34,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:42:34,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:42:34,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08b118cfc5ed15a7af497a71835167b40ccdb413 [2019-12-07 15:42:34,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:42:34,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:42:34,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:42:34,795 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:42:34,795 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:42:34,796 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/ps2.c [2019-12-07 15:42:34,835 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/data/21b9cf880/835f01526b8a4942a798a510b090d61a/FLAGeb357d38a [2019-12-07 15:42:35,272 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:42:35,272 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/sv-benchmarks/c/nla-digbench/ps2.c [2019-12-07 15:42:35,276 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/data/21b9cf880/835f01526b8a4942a798a510b090d61a/FLAGeb357d38a [2019-12-07 15:42:35,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/data/21b9cf880/835f01526b8a4942a798a510b090d61a [2019-12-07 15:42:35,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:42:35,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:42:35,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:42:35,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:42:35,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:42:35,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:42:35" (1/1) ... [2019-12-07 15:42:35,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c51c803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:35, skipping insertion in model container [2019-12-07 15:42:35,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:42:35" (1/1) ... [2019-12-07 15:42:35,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:42:35,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:42:35,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:42:35,420 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:42:35,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:42:35,471 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:42:35,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:35 WrapperNode [2019-12-07 15:42:35,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:42:35,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:42:35,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:42:35,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:42:35,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:35" (1/1) ... [2019-12-07 15:42:35,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:35" (1/1) ... [2019-12-07 15:42:35,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:42:35,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:42:35,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:42:35,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:42:35,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:35" (1/1) ... [2019-12-07 15:42:35,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:35" (1/1) ... [2019-12-07 15:42:35,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:35" (1/1) ... [2019-12-07 15:42:35,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:35" (1/1) ... [2019-12-07 15:42:35,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:35" (1/1) ... [2019-12-07 15:42:35,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:35" (1/1) ... [2019-12-07 15:42:35,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:35" (1/1) ... [2019-12-07 15:42:35,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:42:35,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:42:35,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:42:35,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:42:35,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:42:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:42:35,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:42:35,636 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:42:35,636 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-07 15:42:35,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:42:35 BoogieIcfgContainer [2019-12-07 15:42:35,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:42:35,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:42:35,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:42:35,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:42:35,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:42:35" (1/3) ... [2019-12-07 15:42:35,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7f1d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:42:35, skipping insertion in model container [2019-12-07 15:42:35,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:35" (2/3) ... [2019-12-07 15:42:35,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7f1d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:42:35, skipping insertion in model container [2019-12-07 15:42:35,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:42:35" (3/3) ... [2019-12-07 15:42:35,642 INFO L109 eAbstractionObserver]: Analyzing ICFG ps2.c [2019-12-07 15:42:35,648 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:42:35,651 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-07 15:42:35,658 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-07 15:42:35,672 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:42:35,672 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:42:35,672 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:42:35,672 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:42:35,672 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:42:35,673 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:42:35,673 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:42:35,673 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:42:35,682 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-12-07 15:42:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 15:42:35,685 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:42:35,685 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 15:42:35,686 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:42:35,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:42:35,689 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-12-07 15:42:35,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:42:35,695 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946110838] [2019-12-07 15:42:35,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:42:35,745 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:42:35,745 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032637880] [2019-12-07 15:42:35,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:42:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:42:35,772 WARN L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:42:35,775 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:42:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:42:35,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946110838] [2019-12-07 15:42:35,806 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:42:35,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032637880] [2019-12-07 15:42:35,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:42:35,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:42:35,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043362107] [2019-12-07 15:42:35,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:42:35,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:42:35,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:42:35,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:42:35,821 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2019-12-07 15:42:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:42:35,867 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2019-12-07 15:42:35,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:42:35,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-12-07 15:42:35,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:42:35,874 INFO L225 Difference]: With dead ends: 37 [2019-12-07 15:42:35,874 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 15:42:35,876 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:42:35,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 15:42:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-12-07 15:42:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 15:42:35,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-12-07 15:42:35,898 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2019-12-07 15:42:35,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:42:35,898 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-12-07 15:42:35,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:42:35,899 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-12-07 15:42:35,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 15:42:35,899 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:42:35,899 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-12-07 15:42:36,100 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:42:36,101 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:42:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:42:36,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1360983589, now seen corresponding path program 1 times [2019-12-07 15:42:36,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:42:36,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729842150] [2019-12-07 15:42:36,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:42:36,115 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:42:36,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813157963] [2019-12-07 15:42:36,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:42:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:42:36,162 WARN L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-07 15:42:36,163 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:42:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:42:36,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729842150] [2019-12-07 15:42:36,208 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:42:36,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813157963] [2019-12-07 15:42:36,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 15:42:36,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-12-07 15:42:36,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815467189] [2019-12-07 15:42:36,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:42:36,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:42:36,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:42:36,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:42:36,210 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2019-12-07 15:42:36,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:42:36,244 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-12-07 15:42:36,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:42:36,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-12-07 15:42:36,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:42:36,245 INFO L225 Difference]: With dead ends: 23 [2019-12-07 15:42:36,245 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 15:42:36,246 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:42:36,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 15:42:36,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-12-07 15:42:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 15:42:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-12-07 15:42:36,249 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2019-12-07 15:42:36,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:42:36,250 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-12-07 15:42:36,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:42:36,250 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-12-07 15:42:36,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:42:36,250 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:42:36,250 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2019-12-07 15:42:36,451 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:42:36,452 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:42:36,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:42:36,453 INFO L82 PathProgramCache]: Analyzing trace with hash -565900116, now seen corresponding path program 2 times [2019-12-07 15:42:36,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:42:36,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945013344] [2019-12-07 15:42:36,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:42:36,466 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:42:36,466 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410347557] [2019-12-07 15:42:36,467 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:42:36,553 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:42:36,553 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:42:36,556 WARN L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 23 conjunts are in the unsatisfiable core [2019-12-07 15:42:36,560 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:42:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:42:36,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945013344] [2019-12-07 15:42:36,643 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:42:36,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410347557] [2019-12-07 15:42:36,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 15:42:36,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-12-07 15:42:36,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642561859] [2019-12-07 15:42:36,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 15:42:36,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:42:36,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 15:42:36,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:42:36,645 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2019-12-07 15:42:36,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:42:36,690 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-12-07 15:42:36,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 15:42:36,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-12-07 15:42:36,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:42:36,691 INFO L225 Difference]: With dead ends: 26 [2019-12-07 15:42:36,691 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 15:42:36,691 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-12-07 15:42:36,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 15:42:36,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2019-12-07 15:42:36,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 15:42:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-12-07 15:42:36,695 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2019-12-07 15:42:36,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:42:36,695 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-12-07 15:42:36,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 15:42:36,695 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-12-07 15:42:36,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 15:42:36,695 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:42:36,695 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2019-12-07 15:42:36,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:42:36,897 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:42:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:42:36,898 INFO L82 PathProgramCache]: Analyzing trace with hash -978793413, now seen corresponding path program 3 times [2019-12-07 15:42:36,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:42:36,899 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433176142] [2019-12-07 15:42:36,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:42:36,908 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 15:42:36,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264194132] [2019-12-07 15:42:36,909 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:42:36,978 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 15:42:36,978 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:42:36,980 WARN L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-07 15:42:36,982 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:42:37,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:42:37,101 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:42:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 15:42:37,105 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433176142] [2019-12-07 15:42:37,106 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:42:37,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264194132] [2019-12-07 15:42:37,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 15:42:37,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-12-07 15:42:37,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638006975] [2019-12-07 15:42:37,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:42:37,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:42:37,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:42:37,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:42:37,107 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2019-12-07 15:42:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:42:37,212 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-12-07 15:42:37,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:42:37,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-12-07 15:42:37,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:42:37,213 INFO L225 Difference]: With dead ends: 19 [2019-12-07 15:42:37,213 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:42:37,213 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:42:37,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:42:37,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:42:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:42:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:42:37,214 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-12-07 15:42:37,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:42:37,214 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:42:37,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:42:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:42:37,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:42:37,415 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:42:37,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 15:42:37,465 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 15:42:37,465 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-12-07 15:42:37,465 INFO L246 CegarLoopResult]: For program point L5(lines 5 8) no Hoare annotation was computed. [2019-12-07 15:42:37,465 INFO L242 CegarLoopResult]: At program point L5-2(lines 23 24) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 2) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0))) [2019-12-07 15:42:37,465 INFO L246 CegarLoopResult]: For program point L5-3(lines 5 8) no Hoare annotation was computed. [2019-12-07 15:42:37,465 INFO L249 CegarLoopResult]: At program point L5-5(lines 4 10) the Hoare annotation is: true [2019-12-07 15:42:37,466 INFO L249 CegarLoopResult]: At program point L32(lines 12 33) the Hoare annotation is: true [2019-12-07 15:42:37,466 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 15:42:37,466 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 15:42:37,466 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-12-07 15:42:37,466 INFO L242 CegarLoopResult]: At program point L20-2(lines 20 29) the Hoare annotation is: (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 2) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0))) [2019-12-07 15:42:37,466 INFO L246 CegarLoopResult]: For program point L20-3(lines 20 29) no Hoare annotation was computed. [2019-12-07 15:42:37,466 INFO L246 CegarLoopResult]: For program point L6(lines 6 7) no Hoare annotation was computed. [2019-12-07 15:42:37,466 INFO L246 CegarLoopResult]: For program point L6-1(lines 6 7) no Hoare annotation was computed. [2019-12-07 15:42:37,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:42:37 BoogieIcfgContainer [2019-12-07 15:42:37,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:42:37,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:42:37,477 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:42:37,478 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:42:37,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:42:35" (3/4) ... [2019-12-07 15:42:37,480 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:42:37,487 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 15:42:37,487 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 15:42:37,514 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6f6afcb3-306b-4f65-8496-02548c9339e1/bin/uautomizer/witness.graphml [2019-12-07 15:42:37,514 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:42:37,516 INFO L168 Benchmark]: Toolchain (without parser) took 2227.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 943.5 MB in the beginning and 963.9 MB in the end (delta: -20.4 MB). Peak memory consumption was 77.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:42:37,516 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:42:37,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -151.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:42:37,517 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.97 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. [2019-12-07 15:42:37,517 INFO L168 Benchmark]: Boogie Preprocessor took 11.53 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:42:37,517 INFO L168 Benchmark]: RCFGBuilder took 133.66 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:42:37,517 INFO L168 Benchmark]: TraceAbstraction took 1839.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 969.3 MB in the end (delta: 106.5 MB). Peak memory consumption was 106.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:42:37,518 INFO L168 Benchmark]: Witness Printer took 36.98 ms. Allocated memory is still 1.1 GB. Free memory was 969.3 MB in the beginning and 963.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:42:37,520 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -151.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.97 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 11.53 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 133.66 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1839.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 969.3 MB in the end (delta: 106.5 MB). Peak memory consumption was 106.5 MB. Max. memory is 11.5 GB. * Witness Printer took 36.98 ms. Allocated memory is still 1.1 GB. Free memory was 969.3 MB in the beginning and 963.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (1 == cond && x * 2 == y * y + y) || (x == 0 && y == 0) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 == cond && x * 2 == y * y + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 2 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 37 SDslu, 55 SDs, 0 SdLazy, 87 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 16 NumberOfFragments, 36 HoareAnnotationTreeSize, 4 FomulaSimplifications, 112 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 34 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1545 SizeOfPredicates, 26 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 9/24 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...