./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test25-2.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_55722ea8-3eb4-4fe5-82a9-eed16478e53f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test25-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/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 5d33db1882917813547794c8974f871f0a78640e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:27:48,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:27:48,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:27:48,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:27:48,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:27:48,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:27:48,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:27:48,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:27:48,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:27:48,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:27:48,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:27:48,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:27:48,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:27:48,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:27:48,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:27:48,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:27:48,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:27:48,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:27:48,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:27:48,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:27:48,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:27:48,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:27:48,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:27:48,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:27:48,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:27:48,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:27:48,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:27:48,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:27:48,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:27:48,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:27:48,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:27:48,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:27:48,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:27:48,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:27:48,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:27:48,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:27:48,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:27:48,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:27:48,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:27:48,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:27:48,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:27:48,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:27:48,303 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:27:48,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:27:48,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:27:48,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:27:48,305 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:27:48,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:27:48,306 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:27:48,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:27:48,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:27:48,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:27:48,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:27:48,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:27:48,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:27:48,308 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:27:48,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:27:48,308 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:27:48,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:27:48,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:27:48,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:27:48,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:27:48,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:27:48,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:27:48,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:27:48,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:27:48,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:27:48,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:27:48,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:27:48,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:27:48,311 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_55722ea8-3eb4-4fe5-82a9-eed16478e53f/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 -> 5d33db1882917813547794c8974f871f0a78640e [2019-11-15 23:27:48,352 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:27:48,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:27:48,366 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:27:48,367 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:27:48,367 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:27:48,368 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test25-2.c [2019-11-15 23:27:48,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/bin/uautomizer/data/c6dc562f2/c340db06f07145d5b8fb46ed04131393/FLAG9a44c3ad2 [2019-11-15 23:27:48,760 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:27:48,760 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/sv-benchmarks/c/ldv-regression/test25-2.c [2019-11-15 23:27:48,766 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/bin/uautomizer/data/c6dc562f2/c340db06f07145d5b8fb46ed04131393/FLAG9a44c3ad2 [2019-11-15 23:27:49,137 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/bin/uautomizer/data/c6dc562f2/c340db06f07145d5b8fb46ed04131393 [2019-11-15 23:27:49,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:27:49,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:27:49,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:27:49,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:27:49,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:27:49,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:27:49" (1/1) ... [2019-11-15 23:27:49,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5768abd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:27:49, skipping insertion in model container [2019-11-15 23:27:49,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:27:49" (1/1) ... [2019-11-15 23:27:49,156 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:27:49,178 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:27:49,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:27:49,416 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:27:49,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:27:49,466 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:27:49,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:27:49 WrapperNode [2019-11-15 23:27:49,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:27:49,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:27:49,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:27:49,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:27:49,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:27:49" (1/1) ... [2019-11-15 23:27:49,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:27:49" (1/1) ... [2019-11-15 23:27:49,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:27:49,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:27:49,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:27:49,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:27:49,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:27:49" (1/1) ... [2019-11-15 23:27:49,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:27:49" (1/1) ... [2019-11-15 23:27:49,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:27:49" (1/1) ... [2019-11-15 23:27:49,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:27:49" (1/1) ... [2019-11-15 23:27:49,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:27:49" (1/1) ... [2019-11-15 23:27:49,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:27:49" (1/1) ... [2019-11-15 23:27:49,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:27:49" (1/1) ... [2019-11-15 23:27:49,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:27:49,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:27:49,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:27:49,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:27:49,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:27:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/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 [2019-11-15 23:27:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:27:49,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-15 23:27:49,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:27:49,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:27:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:27:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-15 23:27:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:27:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:27:49,937 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:27:49,937 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-15 23:27:49,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:27:49 BoogieIcfgContainer [2019-11-15 23:27:49,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:27:49,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:27:49,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:27:49,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:27:49,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:27:49" (1/3) ... [2019-11-15 23:27:49,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335530b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:27:49, skipping insertion in model container [2019-11-15 23:27:49,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:27:49" (2/3) ... [2019-11-15 23:27:49,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335530b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:27:49, skipping insertion in model container [2019-11-15 23:27:49,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:27:49" (3/3) ... [2019-11-15 23:27:49,949 INFO L109 eAbstractionObserver]: Analyzing ICFG test25-2.c [2019-11-15 23:27:49,960 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:27:49,967 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:27:49,979 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:27:50,003 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:27:50,004 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:27:50,004 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:27:50,004 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:27:50,004 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:27:50,004 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:27:50,005 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:27:50,005 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:27:50,019 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-15 23:27:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:27:50,026 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:27:50,027 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:27:50,029 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:27:50,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:27:50,036 INFO L82 PathProgramCache]: Analyzing trace with hash -631347226, now seen corresponding path program 1 times [2019-11-15 23:27:50,045 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:27:50,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876565386] [2019-11-15 23:27:50,045 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:50,046 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:50,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:27:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:27:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:27:50,198 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876565386] [2019-11-15 23:27:50,199 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:27:50,199 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:27:50,200 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332490572] [2019-11-15 23:27:50,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:27:50,205 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:27:50,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:27:50,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:27:50,222 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-11-15 23:27:50,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:27:50,237 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2019-11-15 23:27:50,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:27:50,238 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 23:27:50,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:27:50,246 INFO L225 Difference]: With dead ends: 30 [2019-11-15 23:27:50,246 INFO L226 Difference]: Without dead ends: 13 [2019-11-15 23:27:50,249 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:27:50,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-15 23:27:50,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-15 23:27:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-15 23:27:50,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-15 23:27:50,277 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2019-11-15 23:27:50,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:27:50,278 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-15 23:27:50,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:27:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-15 23:27:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:27:50,279 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:27:50,279 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:27:50,279 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:27:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:27:50,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1697064536, now seen corresponding path program 1 times [2019-11-15 23:27:50,280 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:27:50,280 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537438602] [2019-11-15 23:27:50,281 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:50,281 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:50,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:27:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:27:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:27:50,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537438602] [2019-11-15 23:27:50,337 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:27:50,337 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:27:50,337 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425884159] [2019-11-15 23:27:50,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:27:50,339 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:27:50,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:27:50,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:27:50,339 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2019-11-15 23:27:50,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:27:50,371 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2019-11-15 23:27:50,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:27:50,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-15 23:27:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:27:50,372 INFO L225 Difference]: With dead ends: 24 [2019-11-15 23:27:50,372 INFO L226 Difference]: Without dead ends: 15 [2019-11-15 23:27:50,373 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:27:50,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-15 23:27:50,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-15 23:27:50,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-15 23:27:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-15 23:27:50,376 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-11-15 23:27:50,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:27:50,377 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-15 23:27:50,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:27:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-15 23:27:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 23:27:50,378 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:27:50,378 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:27:50,378 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:27:50,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:27:50,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1434190826, now seen corresponding path program 1 times [2019-11-15 23:27:50,379 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:27:50,379 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78160513] [2019-11-15 23:27:50,380 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:50,380 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:50,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:27:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:27:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:27:50,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78160513] [2019-11-15 23:27:50,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97851124] [2019-11-15 23:27:50,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/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 [2019-11-15 23:27:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:27:50,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:27:50,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:27:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:27:50,591 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:27:50,591 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-15 23:27:50,591 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392073559] [2019-11-15 23:27:50,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:27:50,592 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:27:50,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:27:50,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:27:50,594 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2019-11-15 23:27:50,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:27:50,657 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-11-15 23:27:50,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:27:50,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-15 23:27:50,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:27:50,659 INFO L225 Difference]: With dead ends: 26 [2019-11-15 23:27:50,660 INFO L226 Difference]: Without dead ends: 17 [2019-11-15 23:27:50,660 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:27:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-15 23:27:50,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-15 23:27:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-15 23:27:50,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-15 23:27:50,665 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2019-11-15 23:27:50,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:27:50,665 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-15 23:27:50,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:27:50,665 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-15 23:27:50,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 23:27:50,667 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:27:50,667 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:27:50,868 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:27:50,868 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:27:50,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:27:50,869 INFO L82 PathProgramCache]: Analyzing trace with hash 201480788, now seen corresponding path program 2 times [2019-11-15 23:27:50,869 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:27:50,869 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203971748] [2019-11-15 23:27:50,869 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:50,869 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:50,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:27:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:27:50,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:27:50,957 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203971748] [2019-11-15 23:27:50,957 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520483925] [2019-11-15 23:27:50,958 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/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 [2019-11-15 23:27:51,032 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-15 23:27:51,032 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:27:51,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 23:27:51,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:27:51,164 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:27:51,171 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:27:51,172 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2019-11-15 23:27:51,173 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:27:51,180 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:27:51,182 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:27:51,182 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:5 [2019-11-15 23:27:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-15 23:27:51,197 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:27:51,197 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-11-15 23:27:51,197 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621061984] [2019-11-15 23:27:51,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:27:51,198 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:27:51,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:27:51,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:27:51,199 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2019-11-15 23:27:51,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:27:51,283 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2019-11-15 23:27:51,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:27:51,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-15 23:27:51,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:27:51,286 INFO L225 Difference]: With dead ends: 23 [2019-11-15 23:27:51,286 INFO L226 Difference]: Without dead ends: 18 [2019-11-15 23:27:51,287 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:27:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-15 23:27:51,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-15 23:27:51,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 23:27:51,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-15 23:27:51,290 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2019-11-15 23:27:51,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:27:51,291 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-15 23:27:51,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:27:51,291 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-15 23:27:51,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 23:27:51,291 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:27:51,292 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:27:51,501 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:27:51,501 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:27:51,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:27:51,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1859304665, now seen corresponding path program 1 times [2019-11-15 23:27:51,502 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:27:51,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361456111] [2019-11-15 23:27:51,502 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:51,502 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:51,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:27:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:27:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 23:27:51,588 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361456111] [2019-11-15 23:27:51,588 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762415544] [2019-11-15 23:27:51,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/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 [2019-11-15 23:27:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:27:51,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:27:51,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:27:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 23:27:51,685 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:27:51,685 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-15 23:27:51,686 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644247314] [2019-11-15 23:27:51,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:27:51,688 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:27:51,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:27:51,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:27:51,689 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2019-11-15 23:27:51,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:27:51,720 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-11-15 23:27:51,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:27:51,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-15 23:27:51,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:27:51,722 INFO L225 Difference]: With dead ends: 32 [2019-11-15 23:27:51,722 INFO L226 Difference]: Without dead ends: 21 [2019-11-15 23:27:51,723 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:27:51,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-15 23:27:51,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-15 23:27:51,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-15 23:27:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-11-15 23:27:51,726 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2019-11-15 23:27:51,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:27:51,727 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-11-15 23:27:51,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:27:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-11-15 23:27:51,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 23:27:51,727 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:27:51,728 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:27:51,934 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:27:51,934 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:27:51,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:27:51,934 INFO L82 PathProgramCache]: Analyzing trace with hash 291228695, now seen corresponding path program 2 times [2019-11-15 23:27:51,935 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:27:51,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879491083] [2019-11-15 23:27:51,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:51,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:51,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:27:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:27:52,010 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 23:27:52,010 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879491083] [2019-11-15 23:27:52,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196097682] [2019-11-15 23:27:52,011 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/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 [2019-11-15 23:27:52,062 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:27:52,063 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:27:52,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 23:27:52,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:27:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 23:27:52,080 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:27:52,080 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-15 23:27:52,080 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315729476] [2019-11-15 23:27:52,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:27:52,081 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:27:52,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:27:52,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:27:52,082 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 7 states. [2019-11-15 23:27:52,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:27:52,128 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-11-15 23:27:52,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:27:52,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-15 23:27:52,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:27:52,129 INFO L225 Difference]: With dead ends: 34 [2019-11-15 23:27:52,129 INFO L226 Difference]: Without dead ends: 23 [2019-11-15 23:27:52,130 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:27:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-15 23:27:52,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-15 23:27:52,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 23:27:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-11-15 23:27:52,133 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2019-11-15 23:27:52,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:27:52,134 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-11-15 23:27:52,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:27:52,134 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-11-15 23:27:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-15 23:27:52,134 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:27:52,134 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:27:52,343 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:27:52,344 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:27:52,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:27:52,344 INFO L82 PathProgramCache]: Analyzing trace with hash 903742421, now seen corresponding path program 3 times [2019-11-15 23:27:52,344 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:27:52,345 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602769104] [2019-11-15 23:27:52,345 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:52,345 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:52,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:27:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:27:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 23:27:52,433 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602769104] [2019-11-15 23:27:52,433 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140785231] [2019-11-15 23:27:52,434 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/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 [2019-11-15 23:27:52,486 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-15 23:27:52,486 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:27:52,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-15 23:27:52,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:27:52,578 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:27:52,580 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:27:52,580 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2019-11-15 23:27:52,581 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:27:52,590 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:27:52,592 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:27:52,592 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:5 [2019-11-15 23:27:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-15 23:27:52,612 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:27:52,612 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2019-11-15 23:27:52,612 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344652883] [2019-11-15 23:27:52,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 23:27:52,613 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:27:52,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 23:27:52,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-15 23:27:52,614 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 11 states. [2019-11-15 23:27:52,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:27:52,779 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2019-11-15 23:27:52,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 23:27:52,780 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2019-11-15 23:27:52,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:27:52,781 INFO L225 Difference]: With dead ends: 38 [2019-11-15 23:27:52,781 INFO L226 Difference]: Without dead ends: 27 [2019-11-15 23:27:52,782 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2019-11-15 23:27:52,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-15 23:27:52,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-11-15 23:27:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 23:27:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-11-15 23:27:52,786 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 21 [2019-11-15 23:27:52,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:27:52,787 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-11-15 23:27:52,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 23:27:52,787 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-11-15 23:27:52,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-15 23:27:52,788 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:27:52,788 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:27:52,997 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:27:52,997 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:27:52,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:27:52,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1251069224, now seen corresponding path program 4 times [2019-11-15 23:27:52,997 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:27:52,998 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666619367] [2019-11-15 23:27:52,998 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:52,998 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:27:52,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:27:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:27:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-15 23:27:53,121 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666619367] [2019-11-15 23:27:53,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603879210] [2019-11-15 23:27:53,122 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/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 [2019-11-15 23:27:53,194 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 23:27:53,194 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:27:53,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-15 23:27:53,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:27:57,387 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:27:57,389 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:27:57,390 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2019-11-15 23:27:57,390 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:27:57,402 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:27:57,404 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:27:57,404 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:5 [2019-11-15 23:27:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-15 23:27:57,434 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:27:57,434 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-11-15 23:27:57,434 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137266798] [2019-11-15 23:27:57,435 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-15 23:27:57,435 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:27:57,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-15 23:27:57,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=115, Unknown=2, NotChecked=0, Total=156 [2019-11-15 23:27:57,436 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 13 states. [2019-11-15 23:28:11,962 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 33 [2019-11-15 23:28:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:28:12,806 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2019-11-15 23:28:12,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-15 23:28:12,808 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2019-11-15 23:28:12,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:28:12,809 INFO L225 Difference]: With dead ends: 44 [2019-11-15 23:28:12,809 INFO L226 Difference]: Without dead ends: 31 [2019-11-15 23:28:12,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=55, Invalid=181, Unknown=4, NotChecked=0, Total=240 [2019-11-15 23:28:12,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-15 23:28:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-11-15 23:28:12,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 23:28:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-11-15 23:28:12,816 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 25 [2019-11-15 23:28:12,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:28:12,817 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2019-11-15 23:28:12,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-15 23:28:12,817 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2019-11-15 23:28:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-15 23:28:12,819 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:28:12,819 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:28:13,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:28:13,020 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:28:13,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:28:13,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1378869733, now seen corresponding path program 5 times [2019-11-15 23:28:13,020 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:28:13,020 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581111321] [2019-11-15 23:28:13,020 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:28:13,020 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:28:13,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:28:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:28:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-15 23:28:13,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581111321] [2019-11-15 23:28:13,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210359793] [2019-11-15 23:28:13,140 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/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 [2019-11-15 23:28:14,296 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-11-15 23:28:14,296 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:28:14,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:28:14,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:28:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-15 23:28:14,311 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:28:14,311 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-11-15 23:28:14,311 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370485214] [2019-11-15 23:28:14,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 23:28:14,312 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:28:14,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 23:28:14,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:28:14,313 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 10 states. [2019-11-15 23:28:14,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:28:14,360 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2019-11-15 23:28:14,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 23:28:14,361 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2019-11-15 23:28:14,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:28:14,361 INFO L225 Difference]: With dead ends: 48 [2019-11-15 23:28:14,362 INFO L226 Difference]: Without dead ends: 33 [2019-11-15 23:28:14,362 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:28:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-15 23:28:14,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-11-15 23:28:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-15 23:28:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2019-11-15 23:28:14,367 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29 [2019-11-15 23:28:14,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:28:14,367 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2019-11-15 23:28:14,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 23:28:14,367 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2019-11-15 23:28:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-15 23:28:14,368 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:28:14,368 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:28:14,568 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:28:14,569 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:28:14,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:28:14,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1005994073, now seen corresponding path program 6 times [2019-11-15 23:28:14,569 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:28:14,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571162779] [2019-11-15 23:28:14,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:28:14,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:28:14,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:28:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:28:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-15 23:28:14,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571162779] [2019-11-15 23:28:14,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883643230] [2019-11-15 23:28:14,718 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/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 [2019-11-15 23:28:14,834 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-11-15 23:28:14,834 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:28:14,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-15 23:28:14,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:28:14,858 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-15 23:28:14,859 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:28:14,869 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:28:14,873 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-15 23:28:14,873 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:28:14,885 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:28:14,886 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:28:14,886 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:46, output treesize:20 [2019-11-15 23:28:14,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:28:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-11-15 23:28:15,035 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:28:15,035 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-11-15 23:28:15,035 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995753846] [2019-11-15 23:28:15,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 23:28:15,036 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:28:15,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 23:28:15,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-11-15 23:28:15,036 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 18 states. [2019-11-15 23:28:15,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:28:15,507 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2019-11-15 23:28:15,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-15 23:28:15,508 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 31 [2019-11-15 23:28:15,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:28:15,508 INFO L225 Difference]: With dead ends: 48 [2019-11-15 23:28:15,508 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 23:28:15,509 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2019-11-15 23:28:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 23:28:15,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 23:28:15,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 23:28:15,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:28:15,510 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-11-15 23:28:15,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:28:15,510 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:28:15,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 23:28:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:28:15,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 23:28:15,710 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:28:15,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 23:28:15,777 INFO L443 ceAbstractionStarter]: For program point L27-2(lines 27 30) no Hoare annotation was computed. [2019-11-15 23:28:15,777 INFO L439 ceAbstractionStarter]: At program point L27-3(lines 27 30) the Hoare annotation is: (= 0 |ULTIMATE.start_main_~#cont~0.offset|) [2019-11-15 23:28:15,777 INFO L443 ceAbstractionStarter]: For program point L27-4(lines 21 50) no Hoare annotation was computed. [2019-11-15 23:28:15,777 INFO L443 ceAbstractionStarter]: For program point L40(lines 40 42) no Hoare annotation was computed. [2019-11-15 23:28:15,778 INFO L443 ceAbstractionStarter]: For program point L32(lines 32 44) no Hoare annotation was computed. [2019-11-15 23:28:15,778 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-15 23:28:15,778 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 23:28:15,778 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 23:28:15,778 INFO L446 ceAbstractionStarter]: At program point L49(lines 20 50) the Hoare annotation is: true [2019-11-15 23:28:15,778 INFO L439 ceAbstractionStarter]: At program point L41(lines 21 50) the Hoare annotation is: false [2019-11-15 23:28:15,778 INFO L443 ceAbstractionStarter]: For program point L37-1(lines 37 39) no Hoare annotation was computed. [2019-11-15 23:28:15,778 INFO L439 ceAbstractionStarter]: At program point L37-3(lines 37 39) the Hoare annotation is: (and (= ULTIMATE.start_main_~pa~0.offset (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|) 4)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|) ULTIMATE.start_main_~pa~0.base) (<= ULTIMATE.start_main_~i~0 (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset)) (= 0 |ULTIMATE.start_main_~#cont~0.offset|)) [2019-11-15 23:28:15,778 INFO L443 ceAbstractionStarter]: For program point L37-4(lines 37 39) no Hoare annotation was computed. [2019-11-15 23:28:15,778 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 23:28:15,778 INFO L439 ceAbstractionStarter]: At program point L17(lines 15 18) the Hoare annotation is: (let ((.cse2 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|)) (.cse1 (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|) 4))) (let ((.cse0 (select (select |#memory_int| .cse2) .cse1))) (and (<= .cse0 ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~pa~0.offset .cse1) (= .cse2 ULTIMATE.start_main_~pa~0.base) (= 1 |ULTIMATE.start_check_#res|) (<= ULTIMATE.start_main_~i~0 .cse0) (= 0 |ULTIMATE.start_main_~#cont~0.offset|)))) [2019-11-15 23:28:15,778 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2019-11-15 23:28:15,779 INFO L443 ceAbstractionStarter]: For program point L35(lines 35 43) no Hoare annotation was computed. [2019-11-15 23:28:15,787 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,788 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,788 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,789 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,789 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,789 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,791 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-15 23:28:15,791 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,792 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,792 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,792 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,792 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-15 23:28:15,793 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,793 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,794 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,794 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,795 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,797 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,798 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,798 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,799 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-15 23:28:15,799 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,799 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,799 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,800 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,800 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-15 23:28:15,800 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,800 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,802 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,802 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,803 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,803 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,803 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-15 23:28:15,803 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,804 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,805 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-15 23:28:15,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:28:15 BoogieIcfgContainer [2019-11-15 23:28:15,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:28:15,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:28:15,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:28:15,808 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:28:15,808 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:27:49" (3/4) ... [2019-11-15 23:28:15,840 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 23:28:15,850 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-15 23:28:15,850 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 23:28:15,850 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 23:28:15,892 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + 4] <= i && pa == #memory_$Pointer$[cont][cont] + 4) && #memory_$Pointer$[cont][cont] == pa) && 1 == \result) && i <= unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + 4]) && 0 == cont [2019-11-15 23:28:15,937 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_55722ea8-3eb4-4fe5-82a9-eed16478e53f/bin/uautomizer/witness.graphml [2019-11-15 23:28:15,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:28:15,939 INFO L168 Benchmark]: Toolchain (without parser) took 26797.92 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 224.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -127.4 MB). Peak memory consumption was 97.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:28:15,939 INFO L168 Benchmark]: CDTParser took 0.27 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. [2019-11-15 23:28:15,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 171.4 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -216.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:28:15,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:28:15,940 INFO L168 Benchmark]: Boogie Preprocessor took 33.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:28:15,941 INFO L168 Benchmark]: RCFGBuilder took 381.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:28:15,941 INFO L168 Benchmark]: TraceAbstraction took 25866.87 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 53.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.9 MB). Peak memory consumption was 107.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:28:15,942 INFO L168 Benchmark]: Witness Printer took 129.82 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:28:15,944 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 325.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 171.4 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -216.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 381.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 25866.87 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 53.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.9 MB). Peak memory consumption was 107.4 MB. Max. memory is 11.5 GB. * Witness Printer took 129.82 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant [2019-11-15 23:28:15,954 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,954 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,955 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,955 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,955 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,955 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-15 23:28:15,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-15 23:28:15,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,958 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,958 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,958 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,959 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,959 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,959 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-15 23:28:15,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,961 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,961 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-15 23:28:15,961 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,961 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: ((((unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + 4] <= i && pa == #memory_$Pointer$[cont][cont] + 4) && #memory_$Pointer$[cont][cont] == pa) && 1 == \result) && i <= unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + 4]) && 0 == cont - InvariantResult [Line: 37]: Loop Invariant [2019-11-15 23:28:15,962 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,962 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,962 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,963 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,963 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-15 23:28:15,963 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-11-15 23:28:15,964 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-11-15 23:28:15,964 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,964 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-11-15 23:28:15,964 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((pa == #memory_$Pointer$[cont][cont] + 4 && #memory_$Pointer$[cont][cont] == pa) && i <= unknown-#memory_int-unknown[pa][pa]) && 0 == cont - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 == cont - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 25.7s, OverallIterations: 10, TraceHistogramMax: 7, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 52 SDslu, 316 SDs, 0 SdLazy, 394 SolverSat, 14 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 12.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 7 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 19 NumberOfFragments, 89 HoareAnnotationTreeSize, 5 FomulaSimplifications, 207 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 85 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 361 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 343 ConstructedInterpolants, 9 QuantifiedInterpolants, 26877 SizeOfPredicates, 57 NumberOfNonLiveVariables, 800 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 18 InterpolantComputations, 3 PerfectInterpolantSequences, 155/360 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...