./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/egcd.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/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/egcd.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/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 7eaf1ca2ea11910221bd028b73ef4e065d85e3bb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:09:25,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:09:25,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:09:25,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:09:25,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:09:25,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:09:25,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:09:25,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:09:25,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:09:25,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:09:25,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:09:25,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:09:25,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:09:25,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:09:25,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:09:25,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:09:25,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:09:25,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:09:25,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:09:25,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:09:25,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:09:25,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:09:25,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:09:25,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:09:25,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:09:25,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:09:25,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:09:25,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:09:25,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:09:25,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:09:25,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:09:25,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:09:25,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:09:25,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:09:25,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:09:25,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:09:25,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:09:25,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:09:25,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:09:25,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:09:25,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:09:25,326 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-16 00:09:25,338 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:09:25,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:09:25,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:09:25,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:09:25,340 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:09:25,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:09:25,340 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:09:25,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:09:25,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:09:25,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:09:25,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:09:25,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:09:25,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:09:25,342 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:09:25,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:09:25,342 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:09:25,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:09:25,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:09:25,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:09:25,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:09:25,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:09:25,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:09:25,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:09:25,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:09:25,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:09:25,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:09:25,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:09:25,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:09:25,345 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_cdb20a68-2316-4fd3-981f-7bb6a6589bce/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 -> 7eaf1ca2ea11910221bd028b73ef4e065d85e3bb [2019-11-16 00:09:25,369 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:09:25,378 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:09:25,381 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:09:25,382 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:09:25,383 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:09:25,383 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/egcd.c [2019-11-16 00:09:25,436 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/data/fc988dff4/3aa81d3b9a3844b19ec9fe1a8d10e6d9/FLAG4296ab716 [2019-11-16 00:09:25,887 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:09:25,888 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/sv-benchmarks/c/nla-digbench/egcd.c [2019-11-16 00:09:25,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/data/fc988dff4/3aa81d3b9a3844b19ec9fe1a8d10e6d9/FLAG4296ab716 [2019-11-16 00:09:26,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/data/fc988dff4/3aa81d3b9a3844b19ec9fe1a8d10e6d9 [2019-11-16 00:09:26,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:09:26,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:09:26,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:09:26,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:09:26,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:09:26,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:09:26" (1/1) ... [2019-11-16 00:09:26,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c06bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:26, skipping insertion in model container [2019-11-16 00:09:26,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:09:26" (1/1) ... [2019-11-16 00:09:26,419 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:09:26,435 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:09:26,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:09:26,580 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:09:26,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:09:26,670 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:09:26,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:26 WrapperNode [2019-11-16 00:09:26,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:09:26,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:09:26,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:09:26,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:09:26,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:26" (1/1) ... [2019-11-16 00:09:26,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:26" (1/1) ... [2019-11-16 00:09:26,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:09:26,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:09:26,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:09:26,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:09:26,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:26" (1/1) ... [2019-11-16 00:09:26,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:26" (1/1) ... [2019-11-16 00:09:26,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:26" (1/1) ... [2019-11-16 00:09:26,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:26" (1/1) ... [2019-11-16 00:09:26,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:26" (1/1) ... [2019-11-16 00:09:26,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:26" (1/1) ... [2019-11-16 00:09:26,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:26" (1/1) ... [2019-11-16 00:09:26,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:09:26,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:09:26,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:09:26,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:09:26,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:09:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:09:26,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:09:27,032 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:09:27,032 INFO L284 CfgBuilder]: Removed 19 assume(true) statements. [2019-11-16 00:09:27,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:09:27 BoogieIcfgContainer [2019-11-16 00:09:27,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:09:27,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:09:27,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:09:27,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:09:27,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:09:26" (1/3) ... [2019-11-16 00:09:27,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a47436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:09:27, skipping insertion in model container [2019-11-16 00:09:27,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:26" (2/3) ... [2019-11-16 00:09:27,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a47436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:09:27, skipping insertion in model container [2019-11-16 00:09:27,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:09:27" (3/3) ... [2019-11-16 00:09:27,050 INFO L109 eAbstractionObserver]: Analyzing ICFG egcd.c [2019-11-16 00:09:27,059 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:09:27,077 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-16 00:09:27,087 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-16 00:09:27,107 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:09:27,107 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:09:27,107 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:09:27,107 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:09:27,108 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:09:27,108 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:09:27,108 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:09:27,108 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:09:27,120 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-11-16 00:09:27,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-16 00:09:27,126 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:27,126 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-16 00:09:27,128 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:27,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:27,133 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-16 00:09:27,140 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:27,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826128493] [2019-11-16 00:09:27,141 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:27,141 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:27,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:27,203 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:27,204 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143070855] [2019-11-16 00:09:27,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:09:27,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-16 00:09:27,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:27,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826128493] [2019-11-16 00:09:27,298 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:27,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143070855] [2019-11-16 00:09:27,298 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:09:27,299 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-16 00:09:27,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377469240] [2019-11-16 00:09:27,302 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:09:27,302 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:27,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:09:27,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:09:27,312 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2019-11-16 00:09:27,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:27,462 INFO L93 Difference]: Finished difference Result 99 states and 129 transitions. [2019-11-16 00:09:27,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:09:27,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-16 00:09:27,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:27,472 INFO L225 Difference]: With dead ends: 99 [2019-11-16 00:09:27,472 INFO L226 Difference]: Without dead ends: 57 [2019-11-16 00:09:27,475 INFO L600 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 [2019-11-16 00:09:27,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-16 00:09:27,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2019-11-16 00:09:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-16 00:09:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2019-11-16 00:09:27,505 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 4 [2019-11-16 00:09:27,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:27,505 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2019-11-16 00:09:27,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:09:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2019-11-16 00:09:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-16 00:09:27,505 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:27,506 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-16 00:09:27,708 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:27,709 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:27,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:27,716 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-16 00:09:27,716 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:27,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821522453] [2019-11-16 00:09:27,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:27,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:27,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:27,723 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:27,724 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145839465] [2019-11-16 00:09:27,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/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 [2019-11-16 00:09:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:09:27,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-16 00:09:27,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:27,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821522453] [2019-11-16 00:09:27,787 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:27,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145839465] [2019-11-16 00:09:27,788 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:09:27,788 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-16 00:09:27,788 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742333247] [2019-11-16 00:09:27,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:09:27,789 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:27,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:09:27,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:09:27,790 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 4 states. [2019-11-16 00:09:27,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:27,895 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2019-11-16 00:09:27,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:09:27,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-16 00:09:27,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:27,897 INFO L225 Difference]: With dead ends: 57 [2019-11-16 00:09:27,897 INFO L226 Difference]: Without dead ends: 55 [2019-11-16 00:09:27,898 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:09:27,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-16 00:09:27,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2019-11-16 00:09:27,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-16 00:09:27,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2019-11-16 00:09:27,905 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 6 [2019-11-16 00:09:27,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:27,906 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2019-11-16 00:09:27,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:09:27,906 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2019-11-16 00:09:27,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-16 00:09:27,906 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:27,906 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:09:28,116 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:28,117 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:28,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:28,117 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-16 00:09:28,117 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:28,117 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910708348] [2019-11-16 00:09:28,117 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:28,118 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:28,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:28,124 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:28,124 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125214167] [2019-11-16 00:09:28,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/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 [2019-11-16 00:09:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:09:28,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-16 00:09:28,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:28,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910708348] [2019-11-16 00:09:28,177 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:28,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125214167] [2019-11-16 00:09:28,177 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:09:28,177 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-16 00:09:28,177 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632068822] [2019-11-16 00:09:28,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:09:28,178 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:28,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:09:28,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:09:28,178 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 4 states. [2019-11-16 00:09:28,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:28,260 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2019-11-16 00:09:28,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:09:28,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-16 00:09:28,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:28,263 INFO L225 Difference]: With dead ends: 91 [2019-11-16 00:09:28,263 INFO L226 Difference]: Without dead ends: 83 [2019-11-16 00:09:28,263 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:09:28,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-16 00:09:28,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71. [2019-11-16 00:09:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-16 00:09:28,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2019-11-16 00:09:28,276 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 8 [2019-11-16 00:09:28,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:28,276 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2019-11-16 00:09:28,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:09:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2019-11-16 00:09:28,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-16 00:09:28,277 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:28,277 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:09:28,481 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:28,481 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:28,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:28,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1354106950, now seen corresponding path program 1 times [2019-11-16 00:09:28,482 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:28,482 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524903623] [2019-11-16 00:09:28,483 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:28,483 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:28,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:28,489 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:28,489 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904287610] [2019-11-16 00:09:28,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/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 [2019-11-16 00:09:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:09:28,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-16 00:09:28,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:28,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524903623] [2019-11-16 00:09:28,544 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:28,545 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904287610] [2019-11-16 00:09:28,545 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:09:28,545 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-16 00:09:28,545 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863372006] [2019-11-16 00:09:28,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:09:28,546 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:28,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:09:28,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:09:28,546 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand 4 states. [2019-11-16 00:09:28,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:28,620 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2019-11-16 00:09:28,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:09:28,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-16 00:09:28,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:28,627 INFO L225 Difference]: With dead ends: 71 [2019-11-16 00:09:28,627 INFO L226 Difference]: Without dead ends: 69 [2019-11-16 00:09:28,627 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:09:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-16 00:09:28,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2019-11-16 00:09:28,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-16 00:09:28,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2019-11-16 00:09:28,636 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 11 [2019-11-16 00:09:28,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:28,636 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2019-11-16 00:09:28,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:09:28,637 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2019-11-16 00:09:28,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-16 00:09:28,639 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:28,639 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:09:28,840 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:28,840 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:28,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:28,840 INFO L82 PathProgramCache]: Analyzing trace with hash -970768559, now seen corresponding path program 1 times [2019-11-16 00:09:28,841 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:28,841 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120586026] [2019-11-16 00:09:28,841 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:28,841 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:28,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:28,857 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:28,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858077357] [2019-11-16 00:09:28,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:09:28,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-16 00:09:28,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:09:28,923 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120586026] [2019-11-16 00:09:28,924 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:28,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858077357] [2019-11-16 00:09:28,924 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:09:28,924 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-11-16 00:09:28,924 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400603767] [2019-11-16 00:09:28,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:09:28,925 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:28,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:09:28,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:09:28,925 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand 4 states. [2019-11-16 00:09:28,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:28,996 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2019-11-16 00:09:28,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:09:28,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-16 00:09:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:28,998 INFO L225 Difference]: With dead ends: 77 [2019-11-16 00:09:28,998 INFO L226 Difference]: Without dead ends: 71 [2019-11-16 00:09:28,998 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:09:28,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-16 00:09:29,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2019-11-16 00:09:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-16 00:09:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2019-11-16 00:09:29,007 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 12 [2019-11-16 00:09:29,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:29,007 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2019-11-16 00:09:29,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:09:29,007 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2019-11-16 00:09:29,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-16 00:09:29,008 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:29,008 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:09:29,212 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:29,212 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:29,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:29,213 INFO L82 PathProgramCache]: Analyzing trace with hash -78154743, now seen corresponding path program 1 times [2019-11-16 00:09:29,213 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:29,213 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759639575] [2019-11-16 00:09:29,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:29,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:29,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:29,219 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:29,219 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610510796] [2019-11-16 00:09:29,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:09:29,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-16 00:09:29,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:29,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759639575] [2019-11-16 00:09:29,281 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:29,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610510796] [2019-11-16 00:09:29,281 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:09:29,281 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-16 00:09:29,281 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645832397] [2019-11-16 00:09:29,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:09:29,282 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:29,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:09:29,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:09:29,282 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 5 states. [2019-11-16 00:09:29,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:29,432 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2019-11-16 00:09:29,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:09:29,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-16 00:09:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:29,434 INFO L225 Difference]: With dead ends: 75 [2019-11-16 00:09:29,434 INFO L226 Difference]: Without dead ends: 69 [2019-11-16 00:09:29,435 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:09:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-16 00:09:29,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2019-11-16 00:09:29,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-16 00:09:29,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2019-11-16 00:09:29,442 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 13 [2019-11-16 00:09:29,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:29,443 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2019-11-16 00:09:29,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:09:29,443 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2019-11-16 00:09:29,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-16 00:09:29,444 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:29,444 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:09:29,648 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:29,648 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:29,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:29,648 INFO L82 PathProgramCache]: Analyzing trace with hash -900526476, now seen corresponding path program 1 times [2019-11-16 00:09:29,649 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:29,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587630656] [2019-11-16 00:09:29,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:29,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:29,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:29,667 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:29,667 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117246054] [2019-11-16 00:09:29,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:09:29,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-16 00:09:29,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:29,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:29,763 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587630656] [2019-11-16 00:09:29,763 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:29,763 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117246054] [2019-11-16 00:09:29,763 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:09:29,763 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-16 00:09:29,764 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070899321] [2019-11-16 00:09:29,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:09:29,764 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:29,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:09:29,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:09:29,765 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 5 states. [2019-11-16 00:09:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:29,919 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2019-11-16 00:09:29,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:09:29,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-16 00:09:29,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:29,920 INFO L225 Difference]: With dead ends: 104 [2019-11-16 00:09:29,921 INFO L226 Difference]: Without dead ends: 102 [2019-11-16 00:09:29,921 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:09:29,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-11-16 00:09:29,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 79. [2019-11-16 00:09:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-11-16 00:09:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2019-11-16 00:09:29,938 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 14 [2019-11-16 00:09:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:29,939 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2019-11-16 00:09:29,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:09:29,939 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2019-11-16 00:09:29,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-16 00:09:29,940 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:29,940 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-16 00:09:30,140 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:30,141 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:30,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:30,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1368259573, now seen corresponding path program 1 times [2019-11-16 00:09:30,142 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:30,142 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027174794] [2019-11-16 00:09:30,142 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:30,142 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:30,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:30,149 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:30,149 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210570051] [2019-11-16 00:09:30,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:09:30,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-16 00:09:30,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:30,230 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:30,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027174794] [2019-11-16 00:09:30,243 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:30,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210570051] [2019-11-16 00:09:30,243 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:09:30,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-16 00:09:30,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904399545] [2019-11-16 00:09:30,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:09:30,244 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:30,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:09:30,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:09:30,244 INFO L87 Difference]: Start difference. First operand 79 states and 93 transitions. Second operand 5 states. [2019-11-16 00:09:30,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:30,412 INFO L93 Difference]: Finished difference Result 123 states and 141 transitions. [2019-11-16 00:09:30,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:09:30,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-16 00:09:30,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:30,413 INFO L225 Difference]: With dead ends: 123 [2019-11-16 00:09:30,413 INFO L226 Difference]: Without dead ends: 111 [2019-11-16 00:09:30,414 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:09:30,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-11-16 00:09:30,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 101. [2019-11-16 00:09:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-11-16 00:09:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2019-11-16 00:09:30,425 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 16 [2019-11-16 00:09:30,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:30,425 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2019-11-16 00:09:30,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:09:30,426 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2019-11-16 00:09:30,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-16 00:09:30,426 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:30,427 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-16 00:09:30,638 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:30,639 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:30,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:30,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1688297644, now seen corresponding path program 1 times [2019-11-16 00:09:30,639 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:30,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40806701] [2019-11-16 00:09:30,640 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:30,640 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:30,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:30,644 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:30,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471243640] [2019-11-16 00:09:30,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:09:30,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-16 00:09:30,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:30,730 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40806701] [2019-11-16 00:09:30,730 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:30,730 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471243640] [2019-11-16 00:09:30,730 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:09:30,730 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-16 00:09:30,731 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111534085] [2019-11-16 00:09:30,731 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:09:30,731 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:30,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:09:30,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:09:30,731 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand 6 states. [2019-11-16 00:09:30,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:30,911 INFO L93 Difference]: Finished difference Result 133 states and 153 transitions. [2019-11-16 00:09:30,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:09:30,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-11-16 00:09:30,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:30,914 INFO L225 Difference]: With dead ends: 133 [2019-11-16 00:09:30,914 INFO L226 Difference]: Without dead ends: 129 [2019-11-16 00:09:30,914 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:09:30,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-11-16 00:09:30,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2019-11-16 00:09:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-16 00:09:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 135 transitions. [2019-11-16 00:09:30,936 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 135 transitions. Word has length 20 [2019-11-16 00:09:30,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:30,936 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 135 transitions. [2019-11-16 00:09:30,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:09:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 135 transitions. [2019-11-16 00:09:30,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-16 00:09:30,938 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:30,939 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-16 00:09:31,141 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:31,142 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:31,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:31,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1430191788, now seen corresponding path program 2 times [2019-11-16 00:09:31,142 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:31,142 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650028133] [2019-11-16 00:09:31,142 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:31,142 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:31,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:31,147 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:31,147 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1923737366] [2019-11-16 00:09:31,148 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:31,180 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:09:31,180 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:09:31,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-16 00:09:31,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:31,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650028133] [2019-11-16 00:09:31,229 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:31,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923737366] [2019-11-16 00:09:31,230 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:09:31,230 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-16 00:09:31,230 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733203021] [2019-11-16 00:09:31,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:09:31,231 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:31,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:09:31,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:09:31,231 INFO L87 Difference]: Start difference. First operand 112 states and 135 transitions. Second operand 6 states. [2019-11-16 00:09:31,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:31,394 INFO L93 Difference]: Finished difference Result 134 states and 158 transitions. [2019-11-16 00:09:31,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:09:31,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-11-16 00:09:31,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:31,396 INFO L225 Difference]: With dead ends: 134 [2019-11-16 00:09:31,396 INFO L226 Difference]: Without dead ends: 128 [2019-11-16 00:09:31,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:09:31,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-11-16 00:09:31,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 119. [2019-11-16 00:09:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-16 00:09:31,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 144 transitions. [2019-11-16 00:09:31,407 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 144 transitions. Word has length 20 [2019-11-16 00:09:31,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:31,407 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 144 transitions. [2019-11-16 00:09:31,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:09:31,408 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 144 transitions. [2019-11-16 00:09:31,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-16 00:09:31,408 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:31,409 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:09:31,620 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:31,621 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:31,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:31,621 INFO L82 PathProgramCache]: Analyzing trace with hash -848566940, now seen corresponding path program 1 times [2019-11-16 00:09:31,622 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:31,622 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287337874] [2019-11-16 00:09:31,622 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:31,622 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:31,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:31,637 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:31,642 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381089070] [2019-11-16 00:09:31,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:09:31,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-16 00:09:31,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:31,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:31,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-16 00:09:31,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287337874] [2019-11-16 00:09:31,754 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:31,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381089070] [2019-11-16 00:09:31,754 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:09:31,754 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-16 00:09:31,754 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627833274] [2019-11-16 00:09:31,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:09:31,755 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:31,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:09:31,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:09:31,755 INFO L87 Difference]: Start difference. First operand 119 states and 144 transitions. Second operand 7 states. [2019-11-16 00:09:31,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:31,899 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2019-11-16 00:09:31,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:09:31,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-11-16 00:09:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:31,900 INFO L225 Difference]: With dead ends: 127 [2019-11-16 00:09:31,901 INFO L226 Difference]: Without dead ends: 119 [2019-11-16 00:09:31,901 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:09:31,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-11-16 00:09:31,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 105. [2019-11-16 00:09:31,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-16 00:09:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2019-11-16 00:09:31,909 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 21 [2019-11-16 00:09:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:31,910 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2019-11-16 00:09:31,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:09:31,910 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2019-11-16 00:09:31,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-16 00:09:31,911 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:31,911 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1] [2019-11-16 00:09:32,111 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:32,111 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:32,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:32,112 INFO L82 PathProgramCache]: Analyzing trace with hash 986499193, now seen corresponding path program 2 times [2019-11-16 00:09:32,112 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:32,112 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495728247] [2019-11-16 00:09:32,112 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:32,112 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:32,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:32,127 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:32,127 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020133158] [2019-11-16 00:09:32,127 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:32,157 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:09:32,157 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:09:32,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-16 00:09:32,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:32,233 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:32,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495728247] [2019-11-16 00:09:32,246 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:32,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020133158] [2019-11-16 00:09:32,246 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:09:32,247 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-16 00:09:32,247 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131258978] [2019-11-16 00:09:32,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:09:32,247 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:32,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:09:32,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:09:32,248 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand 6 states. [2019-11-16 00:09:32,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:32,454 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2019-11-16 00:09:32,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:09:32,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-16 00:09:32,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:32,456 INFO L225 Difference]: With dead ends: 139 [2019-11-16 00:09:32,456 INFO L226 Difference]: Without dead ends: 137 [2019-11-16 00:09:32,456 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:09:32,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-11-16 00:09:32,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2019-11-16 00:09:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-11-16 00:09:32,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 126 transitions. [2019-11-16 00:09:32,466 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 126 transitions. Word has length 22 [2019-11-16 00:09:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:32,467 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 126 transitions. [2019-11-16 00:09:32,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:09:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 126 transitions. [2019-11-16 00:09:32,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-16 00:09:32,469 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:32,470 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-16 00:09:32,677 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:32,678 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:32,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:32,678 INFO L82 PathProgramCache]: Analyzing trace with hash -24618057, now seen corresponding path program 1 times [2019-11-16 00:09:32,678 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:32,678 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044122911] [2019-11-16 00:09:32,678 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:32,679 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:32,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:32,684 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:32,684 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114708858] [2019-11-16 00:09:32,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:09:32,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-16 00:09:32,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:32,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:32,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:32,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044122911] [2019-11-16 00:09:32,816 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:32,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114708858] [2019-11-16 00:09:32,817 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:09:32,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-16 00:09:32,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713440984] [2019-11-16 00:09:32,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:09:32,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:32,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:09:32,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:09:32,818 INFO L87 Difference]: Start difference. First operand 109 states and 126 transitions. Second operand 6 states. [2019-11-16 00:09:33,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:33,050 INFO L93 Difference]: Finished difference Result 137 states and 155 transitions. [2019-11-16 00:09:33,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:09:33,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-16 00:09:33,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:33,052 INFO L225 Difference]: With dead ends: 137 [2019-11-16 00:09:33,052 INFO L226 Difference]: Without dead ends: 135 [2019-11-16 00:09:33,052 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:09:33,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-11-16 00:09:33,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2019-11-16 00:09:33,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-11-16 00:09:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2019-11-16 00:09:33,060 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 22 [2019-11-16 00:09:33,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:33,061 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2019-11-16 00:09:33,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:09:33,061 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2019-11-16 00:09:33,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-16 00:09:33,062 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:33,062 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2019-11-16 00:09:33,263 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:33,263 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:33,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:33,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1971238726, now seen corresponding path program 1 times [2019-11-16 00:09:33,263 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:33,264 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193208098] [2019-11-16 00:09:33,264 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:33,264 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:33,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:33,268 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:33,269 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821231028] [2019-11-16 00:09:33,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:09:33,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-16 00:09:33,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:33,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:33,413 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193208098] [2019-11-16 00:09:33,413 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:33,413 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821231028] [2019-11-16 00:09:33,414 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:09:33,414 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-16 00:09:33,414 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310296349] [2019-11-16 00:09:33,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:09:33,414 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:33,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:09:33,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:09:33,415 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 6 states. [2019-11-16 00:09:33,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:33,620 INFO L93 Difference]: Finished difference Result 142 states and 159 transitions. [2019-11-16 00:09:33,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:09:33,621 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-16 00:09:33,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:33,622 INFO L225 Difference]: With dead ends: 142 [2019-11-16 00:09:33,622 INFO L226 Difference]: Without dead ends: 130 [2019-11-16 00:09:33,622 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:09:33,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-16 00:09:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 102. [2019-11-16 00:09:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-16 00:09:33,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2019-11-16 00:09:33,631 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 24 [2019-11-16 00:09:33,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:33,631 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2019-11-16 00:09:33,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:09:33,632 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2019-11-16 00:09:33,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-16 00:09:33,632 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:33,633 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] [2019-11-16 00:09:33,836 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:33,836 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:33,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:33,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1302660216, now seen corresponding path program 2 times [2019-11-16 00:09:33,837 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:33,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537422811] [2019-11-16 00:09:33,837 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:33,837 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:33,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:33,842 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:33,842 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919360283] [2019-11-16 00:09:33,842 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:33,880 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:09:33,880 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:09:33,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-16 00:09:33,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:33,934 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:33,954 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537422811] [2019-11-16 00:09:33,954 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:33,954 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919360283] [2019-11-16 00:09:33,954 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:09:33,954 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-16 00:09:33,954 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320965120] [2019-11-16 00:09:33,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:09:33,955 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:33,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:09:33,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:09:33,955 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand 6 states. [2019-11-16 00:09:34,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:34,135 INFO L93 Difference]: Finished difference Result 145 states and 163 transitions. [2019-11-16 00:09:34,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:09:34,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-16 00:09:34,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:34,136 INFO L225 Difference]: With dead ends: 145 [2019-11-16 00:09:34,136 INFO L226 Difference]: Without dead ends: 133 [2019-11-16 00:09:34,137 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:09:34,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2019-11-16 00:09:34,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 110. [2019-11-16 00:09:34,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-16 00:09:34,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2019-11-16 00:09:34,149 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 24 [2019-11-16 00:09:34,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:34,149 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2019-11-16 00:09:34,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:09:34,149 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2019-11-16 00:09:34,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-16 00:09:34,153 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:34,153 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2019-11-16 00:09:34,364 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:34,364 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:34,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:34,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1554252185, now seen corresponding path program 3 times [2019-11-16 00:09:34,365 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:34,365 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196975654] [2019-11-16 00:09:34,365 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:34,365 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:34,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:34,369 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:34,369 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21400803] [2019-11-16 00:09:34,369 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:34,421 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-16 00:09:34,421 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:09:34,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-16 00:09:34,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:34,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-16 00:09:34,490 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196975654] [2019-11-16 00:09:34,490 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:34,490 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21400803] [2019-11-16 00:09:34,491 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:09:34,491 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-16 00:09:34,491 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578873461] [2019-11-16 00:09:34,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:09:34,491 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:34,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:09:34,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:09:34,492 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand 7 states. [2019-11-16 00:09:34,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:34,615 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2019-11-16 00:09:34,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:09:34,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2019-11-16 00:09:34,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:34,616 INFO L225 Difference]: With dead ends: 144 [2019-11-16 00:09:34,616 INFO L226 Difference]: Without dead ends: 140 [2019-11-16 00:09:34,617 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:09:34,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-11-16 00:09:34,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 117. [2019-11-16 00:09:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-11-16 00:09:34,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2019-11-16 00:09:34,629 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 28 [2019-11-16 00:09:34,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:34,629 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2019-11-16 00:09:34,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:09:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2019-11-16 00:09:34,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-16 00:09:34,630 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:34,630 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2019-11-16 00:09:34,834 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:34,834 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:34,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:34,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1812358041, now seen corresponding path program 4 times [2019-11-16 00:09:34,834 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:34,834 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727231751] [2019-11-16 00:09:34,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:34,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:34,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:34,839 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:34,839 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395330904] [2019-11-16 00:09:34,839 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:34,872 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:09:34,872 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:09:34,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-16 00:09:34,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:34,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:34,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-16 00:09:34,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727231751] [2019-11-16 00:09:34,941 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:34,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395330904] [2019-11-16 00:09:34,941 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:09:34,942 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-16 00:09:34,942 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375748514] [2019-11-16 00:09:34,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:09:34,942 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:34,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:09:34,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:09:34,943 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 5 states. [2019-11-16 00:09:35,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:35,015 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2019-11-16 00:09:35,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:09:35,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2019-11-16 00:09:35,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:35,017 INFO L225 Difference]: With dead ends: 117 [2019-11-16 00:09:35,017 INFO L226 Difference]: Without dead ends: 107 [2019-11-16 00:09:35,017 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:09:35,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-11-16 00:09:35,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 55. [2019-11-16 00:09:35,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-16 00:09:35,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2019-11-16 00:09:35,024 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 28 [2019-11-16 00:09:35,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:35,024 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2019-11-16 00:09:35,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:09:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2019-11-16 00:09:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-16 00:09:35,025 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:35,025 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1] [2019-11-16 00:09:35,225 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:35,225 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:35,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:35,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1069372034, now seen corresponding path program 3 times [2019-11-16 00:09:35,226 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:35,226 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131853679] [2019-11-16 00:09:35,226 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:35,226 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:35,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:35,229 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:35,229 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326858213] [2019-11-16 00:09:35,229 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:35,264 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-16 00:09:35,265 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:09:35,265 WARN L254 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-16 00:09:35,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:35,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:35,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:35,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-16 00:09:35,401 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131853679] [2019-11-16 00:09:35,401 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:35,402 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326858213] [2019-11-16 00:09:35,402 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:09:35,402 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-11-16 00:09:35,402 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442770904] [2019-11-16 00:09:35,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-16 00:09:35,406 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:35,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-16 00:09:35,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:09:35,407 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 9 states. [2019-11-16 00:09:35,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:35,649 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2019-11-16 00:09:35,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:09:35,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2019-11-16 00:09:35,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:35,651 INFO L225 Difference]: With dead ends: 107 [2019-11-16 00:09:35,651 INFO L226 Difference]: Without dead ends: 105 [2019-11-16 00:09:35,651 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-16 00:09:35,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-16 00:09:35,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 71. [2019-11-16 00:09:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-16 00:09:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2019-11-16 00:09:35,661 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 30 [2019-11-16 00:09:35,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:35,662 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2019-11-16 00:09:35,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-16 00:09:35,662 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2019-11-16 00:09:35,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-16 00:09:35,662 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:35,662 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2019-11-16 00:09:35,866 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:35,866 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:35,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:35,867 INFO L82 PathProgramCache]: Analyzing trace with hash -2080489284, now seen corresponding path program 2 times [2019-11-16 00:09:35,867 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:35,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464469732] [2019-11-16 00:09:35,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:35,868 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:35,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:35,880 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:35,880 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404309345] [2019-11-16 00:09:35,880 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:35,917 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:09:35,917 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:09:35,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-16 00:09:35,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:35,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:36,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464469732] [2019-11-16 00:09:36,013 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:36,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404309345] [2019-11-16 00:09:36,013 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:09:36,013 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-16 00:09:36,014 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102371125] [2019-11-16 00:09:36,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:09:36,014 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:36,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:09:36,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:09:36,015 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand 7 states. [2019-11-16 00:09:36,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:36,368 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2019-11-16 00:09:36,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-16 00:09:36,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2019-11-16 00:09:36,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:36,369 INFO L225 Difference]: With dead ends: 111 [2019-11-16 00:09:36,369 INFO L226 Difference]: Without dead ends: 109 [2019-11-16 00:09:36,370 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:09:36,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-11-16 00:09:36,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 79. [2019-11-16 00:09:36,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-11-16 00:09:36,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2019-11-16 00:09:36,381 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 30 [2019-11-16 00:09:36,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:36,381 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2019-11-16 00:09:36,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:09:36,382 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2019-11-16 00:09:36,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-16 00:09:36,383 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:36,383 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2019-11-16 00:09:36,594 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:36,594 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:36,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:36,594 INFO L82 PathProgramCache]: Analyzing trace with hash -850517316, now seen corresponding path program 3 times [2019-11-16 00:09:36,595 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:36,595 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822697264] [2019-11-16 00:09:36,595 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:36,595 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:36,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:36,600 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-16 00:09:36,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733823833] [2019-11-16 00:09:36,601 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:36,637 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-16 00:09:36,637 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:09:36,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-16 00:09:36,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:36,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:36,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-16 00:09:36,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822697264] [2019-11-16 00:09:36,758 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-16 00:09:36,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733823833] [2019-11-16 00:09:36,758 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:09:36,758 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-16 00:09:36,758 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216167680] [2019-11-16 00:09:36,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-16 00:09:36,759 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:36,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-16 00:09:36,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:09:36,759 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 8 states. [2019-11-16 00:09:36,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:36,863 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2019-11-16 00:09:36,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:09:36,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-11-16 00:09:36,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:36,864 INFO L225 Difference]: With dead ends: 79 [2019-11-16 00:09:36,864 INFO L226 Difference]: Without dead ends: 0 [2019-11-16 00:09:36,865 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:09:36,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-16 00:09:36,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-16 00:09:36,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-16 00:09:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-16 00:09:36,866 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2019-11-16 00:09:36,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:36,866 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:09:36,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-16 00:09:36,866 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-16 00:09:36,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-16 00:09:37,066 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:37,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-16 00:10:11,747 WARN L191 SmtUtils]: Spent 34.24 s on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2019-11-16 00:10:36,424 WARN L191 SmtUtils]: Spent 24.67 s on a formula simplification. DAG size of input: 116 DAG size of output: 27 [2019-11-16 00:10:36,528 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 26 [2019-11-16 00:10:42,744 WARN L191 SmtUtils]: Spent 6.14 s on a formula simplification. DAG size of input: 110 DAG size of output: 47 [2019-11-16 00:10:42,962 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 26 [2019-11-16 00:10:42,964 INFO L439 ceAbstractionStarter]: At program point L6-5(lines 5 11) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~p~0))) (= (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~q~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~s~0)) ULTIMATE.start_main_~b~0) (<= 1 ULTIMATE.start_main_~y~0)) [2019-11-16 00:10:42,964 INFO L443 ceAbstractionStarter]: For program point L6-6(lines 6 9) no Hoare annotation was computed. [2019-11-16 00:10:42,964 INFO L439 ceAbstractionStarter]: At program point L6-8(lines 33 34) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~p~0))) (= (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~q~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~s~0)) ULTIMATE.start_main_~b~0) (<= 1 ULTIMATE.start_main_~y~0)) [2019-11-16 00:10:42,964 INFO L443 ceAbstractionStarter]: For program point L6-9(lines 6 9) no Hoare annotation was computed. [2019-11-16 00:10:42,965 INFO L439 ceAbstractionStarter]: At program point L6-11(lines 5 11) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~p~0))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~q~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~s~0)) ULTIMATE.start_main_~b~0) (<= 1 ULTIMATE.start_main_~y~0)) [2019-11-16 00:10:42,965 INFO L443 ceAbstractionStarter]: For program point L6-12(lines 6 9) no Hoare annotation was computed. [2019-11-16 00:10:42,965 INFO L439 ceAbstractionStarter]: At program point L6-14(lines 5 11) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~s~0 1)) (.cse1 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_main_~p~0 1)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse5 (<= 1 ULTIMATE.start_main_~y~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (and .cse2 (= (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0) 1) (= 0 (+ ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~r~0)) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (= (+ ULTIMATE.start_main_~q~0 1) 0) .cse5 (= 1 ULTIMATE.start_main_~s~0)) (and (and (= (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) .cse2 (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~p~0))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~q~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~s~0)) ULTIMATE.start_main_~b~0) .cse5))) [2019-11-16 00:10:42,965 INFO L443 ceAbstractionStarter]: For program point L6-15(lines 6 9) no Hoare annotation was computed. [2019-11-16 00:10:42,965 INFO L439 ceAbstractionStarter]: At program point L6-17(lines 5 11) the Hoare annotation is: (let ((.cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0))) (let ((.cse0 (and .cse5 (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~p~0))))) (.cse4 (= ULTIMATE.start_main_~s~0 1)) (.cse2 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse3 (= (+ ULTIMATE.start_main_~q~0 1) 0)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0))) (or (and (and (= (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~q~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~s~0)) ULTIMATE.start_main_~b~0) .cse1) (and (= (* 2 ULTIMATE.start_main_~y~0) .cse2) .cse0 .cse3 .cse1 (= 2 ULTIMATE.start_main_~s~0)) (and (= (+ ULTIMATE.start_main_~q~0 2) 0) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 (* 2 ULTIMATE.start_main_~x~0))) .cse4 .cse0 .cse1) (and .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) .cse1) (and .cse5 (= ULTIMATE.start_main_~y~0 .cse2) .cse3 .cse1 (= 1 ULTIMATE.start_main_~s~0))))) [2019-11-16 00:10:42,965 INFO L443 ceAbstractionStarter]: For program point L6-18(lines 6 9) no Hoare annotation was computed. [2019-11-16 00:10:42,966 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-11-16 00:10:42,966 INFO L446 ceAbstractionStarter]: At program point L6-20(lines 5 11) the Hoare annotation is: true [2019-11-16 00:10:42,966 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 8) no Hoare annotation was computed. [2019-11-16 00:10:42,966 INFO L443 ceAbstractionStarter]: For program point L7-1(lines 7 8) no Hoare annotation was computed. [2019-11-16 00:10:42,966 INFO L443 ceAbstractionStarter]: For program point L7-2(lines 7 8) no Hoare annotation was computed. [2019-11-16 00:10:42,966 INFO L443 ceAbstractionStarter]: For program point L36(lines 36 44) no Hoare annotation was computed. [2019-11-16 00:10:42,966 INFO L443 ceAbstractionStarter]: For program point L7-3(lines 7 8) no Hoare annotation was computed. [2019-11-16 00:10:42,966 INFO L443 ceAbstractionStarter]: For program point L7-4(lines 7 8) no Hoare annotation was computed. [2019-11-16 00:10:42,966 INFO L439 ceAbstractionStarter]: At program point L36-2(lines 28 45) the Hoare annotation is: (let ((.cse0 (= (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0))) (.cse1 (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~q~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~s~0)) ULTIMATE.start_main_~b~0)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0))) (or (and .cse0 (= ULTIMATE.start_main_~p~0 1) (= ULTIMATE.start_main_~q~0 0) .cse1 .cse2 (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~p~0))) .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2))) [2019-11-16 00:10:42,966 INFO L443 ceAbstractionStarter]: For program point L7-5(lines 7 8) no Hoare annotation was computed. [2019-11-16 00:10:42,967 INFO L443 ceAbstractionStarter]: For program point L7-6(lines 7 8) no Hoare annotation was computed. [2019-11-16 00:10:42,967 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-16 00:10:42,967 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-16 00:10:42,967 INFO L443 ceAbstractionStarter]: For program point L28-2(lines 28 45) no Hoare annotation was computed. [2019-11-16 00:10:42,967 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-11-16 00:10:42,967 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-16 00:10:42,967 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-11-16 00:10:42,967 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-11-16 00:10:42,967 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-11-16 00:10:42,968 INFO L446 ceAbstractionStarter]: At program point L51(lines 13 52) the Hoare annotation is: true [2019-11-16 00:10:42,968 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-11-16 00:10:42,968 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-11-16 00:10:42,968 INFO L443 ceAbstractionStarter]: For program point L6(lines 6 9) no Hoare annotation was computed. [2019-11-16 00:10:42,968 INFO L439 ceAbstractionStarter]: At program point L6-2(lines 5 11) the Hoare annotation is: (and (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~p~0))) (= (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~q~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~s~0)) ULTIMATE.start_main_~b~0) (<= 1 ULTIMATE.start_main_~y~0)) [2019-11-16 00:10:42,968 INFO L443 ceAbstractionStarter]: For program point L6-3(lines 6 9) no Hoare annotation was computed. [2019-11-16 00:10:42,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:10:42 BoogieIcfgContainer [2019-11-16 00:10:42,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:10:42,997 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:10:42,997 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:10:42,997 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:10:42,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:09:27" (3/4) ... [2019-11-16 00:10:43,009 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-16 00:10:43,026 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-16 00:10:43,026 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-16 00:10:43,078 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cdb20a68-2316-4fd3-981f-7bb6a6589bce/bin/uautomizer/witness.graphml [2019-11-16 00:10:43,078 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:10:43,079 INFO L168 Benchmark]: Toolchain (without parser) took 76673.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.9 MB). Free memory was 948.8 MB in the beginning and 1.2 GB in the end (delta: -219.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:10:43,080 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:10:43,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:10:43,081 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:10:43,081 INFO L168 Benchmark]: Boogie Preprocessor took 23.39 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:10:43,082 INFO L168 Benchmark]: RCFGBuilder took 306.02 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:10:43,082 INFO L168 Benchmark]: TraceAbstraction took 75962.78 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 48.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -62.4 MB). Peak memory consumption was 278.5 MB. Max. memory is 11.5 GB. [2019-11-16 00:10:43,082 INFO L168 Benchmark]: Witness Printer took 81.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 11.5 GB. [2019-11-16 00:10:43,085 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.39 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 306.02 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 75962.78 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 48.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -62.4 MB). Peak memory consumption was 278.5 MB. Max. memory is 11.5 GB. * Witness Printer took 81.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: (((((((r * q + 1 == p * s && b == a && b == y * r + x * p) && 1 == cond) && x * q + y * s == b) && 1 <= y) || ((((2 * y == b + x && b == a && b == y * r + x * p) && q + 1 == 0) && 1 <= y) && 2 == s)) || ((((q + 2 == 0 && y == b + 2 * x) && s == 1) && b == a && b == y * r + x * p) && 1 <= y)) || (((s == 1 && b == y) && q == 0) && 1 <= y)) || ((((b == a && y == b + x) && q + 1 == 0) && 1 <= y) && 1 == s) - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: ((((r * q + 1 == p * s && b == a) && b == y * r + x * p) && 1 == cond) && x * q + y * s == b) && 1 <= y - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: (((a == y * r + x * p && r * q + 1 == p * s) && 1 == cond) && x * q + y * s == b) && 1 <= y - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((r * q + 1 == p * s && p == 1) && q == 0) && x * q + y * s == b) && 1 <= y) && r == 0) && a == x) || ((((a == y * r + x * p && r * q + 1 == p * s) && 1 == cond) && x * q + y * s == b) && 1 <= y) - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: (((((((s == 1 && b == y) && b == a) && p == 1) && q == 0) && 1 <= y) || ((((((s == 1 && b == y) && p == 1) && q == 0) && 1 <= y) && r == 0) && a == x)) || ((((((b == a && q + p == 1) && 0 == s + r) && y == b + x) && q + 1 == 0) && 1 <= y) && 1 == s)) || (((((r * q + 1 == p * s && b == a) && b == y * r + x * p) && 1 == cond) && x * q + y * s == b) && 1 <= y) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((a == y * r + x * p && r * q + 1 == p * s) && 1 == cond) && x * q + y * s == b) && 1 <= y - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: (((a == y * r + x * p && r * q + 1 == p * s) && 1 == cond) && x * q + y * s == b) && 1 <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 7 error locations. Result: SAFE, OverallTime: 75.8s, OverallIterations: 20, TraceHistogramMax: 4, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 65.8s, HoareTripleCheckerStatistics: 449 SDtfs, 533 SDslu, 986 SDs, 0 SdLazy, 1755 SolverSat, 178 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 407 GetRequests, 284 SyntacticMatches, 5 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 365 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 65 NumberOfFragments, 461 HoareAnnotationTreeSize, 9 FomulaSimplifications, 69235 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 9 FomulaSimplificationsInter, 4242 FormulaSimplificationTreeSizeReductionInter, 65.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 383 NumberOfCodeBlocks, 342 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 363 ConstructedInterpolants, 0 QuantifiedInterpolants, 123283 SizeOfPredicates, 179 NumberOfNonLiveVariables, 1332 ConjunctsInSsa, 451 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 114/283 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...