./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 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test25-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 095737d8fbee9027efb54bd1ca6a270d14b06184 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:59:08,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:59:08,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:59:08,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:59:08,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:59:08,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:59:08,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:59:08,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:59:08,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:59:08,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:59:08,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:59:08,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:59:08,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:59:08,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:59:08,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:59:08,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:59:08,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:59:08,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:59:08,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:59:08,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:59:08,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:59:08,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:59:08,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:59:08,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:59:08,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:59:08,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:59:08,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:59:08,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:59:08,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:59:08,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:59:08,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:59:08,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:59:08,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:59:08,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:59:08,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:59:08,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:59:08,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:59:08,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:59:08,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:59:08,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:59:08,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:59:08,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:59:08,469 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:59:08,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:59:08,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:59:08,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:59:08,472 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:59:08,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:59:08,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:59:08,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:59:08,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:59:08,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:59:08,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:59:08,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:59:08,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:59:08,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:59:08,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:59:08,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:59:08,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:59:08,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:59:08,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:59:08,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:59:08,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:59:08,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:59:08,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:59:08,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:59:08,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:59:08,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:59:08,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:59:08,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:59:08,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:59:08,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 095737d8fbee9027efb54bd1ca6a270d14b06184 [2020-12-01 15:59:08,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:59:08,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:59:08,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:59:08,920 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:59:08,921 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:59:08,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test25-2.c [2020-12-01 15:59:09,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/bin/uautomizer/data/5d4cf2828/88023ce5cad54a74a295cd1e82d4b1b2/FLAG009711f2f [2020-12-01 15:59:09,624 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:59:09,625 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/sv-benchmarks/c/ldv-regression/test25-2.c [2020-12-01 15:59:09,636 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/bin/uautomizer/data/5d4cf2828/88023ce5cad54a74a295cd1e82d4b1b2/FLAG009711f2f [2020-12-01 15:59:10,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/bin/uautomizer/data/5d4cf2828/88023ce5cad54a74a295cd1e82d4b1b2 [2020-12-01 15:59:10,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:59:10,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:59:10,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:59:10,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:59:10,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:59:10,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:59:10" (1/1) ... [2020-12-01 15:59:10,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da98c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:10, skipping insertion in model container [2020-12-01 15:59:10,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:59:10" (1/1) ... [2020-12-01 15:59:10,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:59:10,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:59:10,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:59:10,388 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:59:10,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:59:10,431 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:59:10,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:10 WrapperNode [2020-12-01 15:59:10,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:59:10,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:59:10,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:59:10,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:59:10,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:10" (1/1) ... [2020-12-01 15:59:10,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:10" (1/1) ... [2020-12-01 15:59:10,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:59:10,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:59:10,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:59:10,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:59:10,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:10" (1/1) ... [2020-12-01 15:59:10,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:10" (1/1) ... [2020-12-01 15:59:10,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:10" (1/1) ... [2020-12-01 15:59:10,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:10" (1/1) ... [2020-12-01 15:59:10,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:10" (1/1) ... [2020-12-01 15:59:10,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:10" (1/1) ... [2020-12-01 15:59:10,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:10" (1/1) ... [2020-12-01 15:59:10,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:59:10,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:59:10,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:59:10,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:59:10,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/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 [2020-12-01 15:59:10,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 15:59:10,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:59:10,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 15:59:10,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:59:10,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:59:10,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:59:10,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:59:10,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 15:59:10,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:59:11,185 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:59:11,185 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 15:59:11,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:59:11 BoogieIcfgContainer [2020-12-01 15:59:11,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:59:11,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:59:11,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:59:11,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:59:11,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:59:10" (1/3) ... [2020-12-01 15:59:11,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a388595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:59:11, skipping insertion in model container [2020-12-01 15:59:11,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:59:10" (2/3) ... [2020-12-01 15:59:11,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a388595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:59:11, skipping insertion in model container [2020-12-01 15:59:11,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:59:11" (3/3) ... [2020-12-01 15:59:11,204 INFO L111 eAbstractionObserver]: Analyzing ICFG test25-2.c [2020-12-01 15:59:11,237 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:59:11,246 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:59:11,264 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:59:11,309 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:59:11,314 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:59:11,314 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:59:11,315 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:59:11,315 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:59:11,315 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:59:11,315 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:59:11,316 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:59:11,334 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-01 15:59:11,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:59:11,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:11,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:11,343 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:11,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:11,352 INFO L82 PathProgramCache]: Analyzing trace with hash -631347226, now seen corresponding path program 1 times [2020-12-01 15:59:11,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:11,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848599733] [2020-12-01 15:59:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:59:11,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848599733] [2020-12-01 15:59:11,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:59:11,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:59:11,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199716974] [2020-12-01 15:59:11,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:59:11,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:11,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:59:11,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:59:11,640 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-12-01 15:59:11,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:11,664 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2020-12-01 15:59:11,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:59:11,666 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 15:59:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:11,688 INFO L225 Difference]: With dead ends: 31 [2020-12-01 15:59:11,688 INFO L226 Difference]: Without dead ends: 13 [2020-12-01 15:59:11,693 INFO L677 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 [2020-12-01 15:59:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-01 15:59:11,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-01 15:59:11,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-01 15:59:11,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-12-01 15:59:11,738 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-12-01 15:59:11,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:11,738 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-12-01 15:59:11,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:59:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-12-01 15:59:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:59:11,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:11,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:11,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:59:11,742 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:11,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:11,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1697064536, now seen corresponding path program 1 times [2020-12-01 15:59:11,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:11,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426529699] [2020-12-01 15:59:11,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:59:11,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426529699] [2020-12-01 15:59:11,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:59:11,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:59:11,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704134598] [2020-12-01 15:59:11,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:59:11,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:11,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:59:11,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:59:11,863 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2020-12-01 15:59:11,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:11,900 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-12-01 15:59:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:59:11,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-01 15:59:11,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:11,903 INFO L225 Difference]: With dead ends: 24 [2020-12-01 15:59:11,904 INFO L226 Difference]: Without dead ends: 15 [2020-12-01 15:59:11,905 INFO L677 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 [2020-12-01 15:59:11,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-01 15:59:11,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-12-01 15:59:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-01 15:59:11,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-12-01 15:59:11,911 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2020-12-01 15:59:11,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:11,912 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-12-01 15:59:11,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:59:11,912 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-12-01 15:59:11,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:59:11,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:11,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:11,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:59:11,914 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:11,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:11,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1434190826, now seen corresponding path program 1 times [2020-12-01 15:59:11,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:11,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150947774] [2020-12-01 15:59:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:59:12,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150947774] [2020-12-01 15:59:12,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451303969] [2020-12-01 15:59:12,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/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 [2020-12-01 15:59:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:12,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 15:59:12,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:59:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:59:12,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:59:12,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-01 15:59:12,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716182431] [2020-12-01 15:59:12,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:59:12,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:12,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:59:12,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:59:12,343 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2020-12-01 15:59:12,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:12,376 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-12-01 15:59:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:59:12,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-01 15:59:12,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:12,378 INFO L225 Difference]: With dead ends: 26 [2020-12-01 15:59:12,379 INFO L226 Difference]: Without dead ends: 17 [2020-12-01 15:59:12,379 INFO L677 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 [2020-12-01 15:59:12,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-01 15:59:12,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-12-01 15:59:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-01 15:59:12,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-12-01 15:59:12,384 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2020-12-01 15:59:12,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:12,385 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-12-01 15:59:12,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:59:12,385 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-12-01 15:59:12,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:59:12,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:12,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:12,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-01 15:59:12,608 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:12,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:12,609 INFO L82 PathProgramCache]: Analyzing trace with hash 201480788, now seen corresponding path program 2 times [2020-12-01 15:59:12,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:12,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363217282] [2020-12-01 15:59:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:59:12,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363217282] [2020-12-01 15:59:12,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234061669] [2020-12-01 15:59:12,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/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 [2020-12-01 15:59:12,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-01 15:59:12,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:59:12,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-01 15:59:12,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:59:13,077 INFO L348 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2020-12-01 15:59:13,078 INFO L382 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 34 treesize of output 12 [2020-12-01 15:59:13,093 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:59:13,097 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:59:13,099 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:59:13,100 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:34, output treesize:5 [2020-12-01 15:59:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-01 15:59:13,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:59:13,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-12-01 15:59:13,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47249880] [2020-12-01 15:59:13,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:59:13,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:13,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:59:13,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:59:13,138 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2020-12-01 15:59:13,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:13,284 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-12-01 15:59:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:59:13,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-01 15:59:13,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:13,287 INFO L225 Difference]: With dead ends: 23 [2020-12-01 15:59:13,288 INFO L226 Difference]: Without dead ends: 18 [2020-12-01 15:59:13,291 INFO L677 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 [2020-12-01 15:59:13,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-01 15:59:13,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-01 15:59:13,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-01 15:59:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-01 15:59:13,302 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2020-12-01 15:59:13,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:13,306 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-01 15:59:13,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:59:13,307 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-01 15:59:13,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:59:13,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:13,308 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:13,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:59:13,522 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:13,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:13,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1859304665, now seen corresponding path program 1 times [2020-12-01 15:59:13,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:13,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830261423] [2020-12-01 15:59:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 15:59:13,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830261423] [2020-12-01 15:59:13,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640476637] [2020-12-01 15:59:13,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/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 [2020-12-01 15:59:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:13,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:59:13,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:59:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 15:59:13,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:59:13,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-01 15:59:13,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70118610] [2020-12-01 15:59:13,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:59:13,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:13,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:59:13,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:59:13,840 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-12-01 15:59:13,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:13,879 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-12-01 15:59:13,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:59:13,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-01 15:59:13,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:13,883 INFO L225 Difference]: With dead ends: 32 [2020-12-01 15:59:13,883 INFO L226 Difference]: Without dead ends: 21 [2020-12-01 15:59:13,884 INFO L677 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 [2020-12-01 15:59:13,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-01 15:59:13,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-12-01 15:59:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-01 15:59:13,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-12-01 15:59:13,888 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2020-12-01 15:59:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:13,889 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-12-01 15:59:13,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:59:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-12-01 15:59:13,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 15:59:13,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:13,890 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:14,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:59:14,099 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:14,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:14,100 INFO L82 PathProgramCache]: Analyzing trace with hash 291228695, now seen corresponding path program 2 times [2020-12-01 15:59:14,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:14,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334331406] [2020-12-01 15:59:14,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 15:59:14,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334331406] [2020-12-01 15:59:14,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190769008] [2020-12-01 15:59:14,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/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 [2020-12-01 15:59:14,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:59:14,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:59:14,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 15:59:14,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:59:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 15:59:14,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:59:14,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-01 15:59:14,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777469916] [2020-12-01 15:59:14,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:59:14,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:14,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:59:14,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:59:14,439 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 7 states. [2020-12-01 15:59:14,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:14,497 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-12-01 15:59:14,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:59:14,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-12-01 15:59:14,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:14,501 INFO L225 Difference]: With dead ends: 34 [2020-12-01 15:59:14,501 INFO L226 Difference]: Without dead ends: 23 [2020-12-01 15:59:14,502 INFO L677 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 [2020-12-01 15:59:14,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-01 15:59:14,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-12-01 15:59:14,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-01 15:59:14,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-01 15:59:14,516 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2020-12-01 15:59:14,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:14,516 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-01 15:59:14,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:59:14,517 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-01 15:59:14,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 15:59:14,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:14,518 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:14,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:59:14,727 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:14,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:14,727 INFO L82 PathProgramCache]: Analyzing trace with hash 903742421, now seen corresponding path program 3 times [2020-12-01 15:59:14,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:14,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394002688] [2020-12-01 15:59:14,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 15:59:14,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394002688] [2020-12-01 15:59:14,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460795271] [2020-12-01 15:59:14,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/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 [2020-12-01 15:59:15,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-01 15:59:15,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:59:15,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-01 15:59:15,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:59:15,275 INFO L348 Elim1Store]: treesize reduction 39, result has 7.1 percent of original size [2020-12-01 15:59:15,276 INFO L382 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 51 treesize of output 12 [2020-12-01 15:59:15,281 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:59:15,284 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:59:15,285 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:59:15,285 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:5 [2020-12-01 15:59:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-01 15:59:15,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:59:15,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-12-01 15:59:15,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454915169] [2020-12-01 15:59:15,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 15:59:15,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:15,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:59:15,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:59:15,315 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 12 states. [2020-12-01 15:59:15,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:15,669 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-12-01 15:59:15,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-01 15:59:15,670 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-12-01 15:59:15,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:15,671 INFO L225 Difference]: With dead ends: 38 [2020-12-01 15:59:15,671 INFO L226 Difference]: Without dead ends: 27 [2020-12-01 15:59:15,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2020-12-01 15:59:15,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-01 15:59:15,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-12-01 15:59:15,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-01 15:59:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-12-01 15:59:15,689 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 21 [2020-12-01 15:59:15,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:15,689 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-12-01 15:59:15,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 15:59:15,690 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-12-01 15:59:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:59:15,692 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:15,692 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:15,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-01 15:59:15,918 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:15,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:15,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1251069224, now seen corresponding path program 4 times [2020-12-01 15:59:15,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:15,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693099093] [2020-12-01 15:59:15,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-01 15:59:16,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693099093] [2020-12-01 15:59:16,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166669176] [2020-12-01 15:59:16,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/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 [2020-12-01 15:59:16,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-01 15:59:16,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:59:16,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 15:59:16,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:59:16,362 INFO L348 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2020-12-01 15:59:16,363 INFO L382 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 34 treesize of output 12 [2020-12-01 15:59:16,366 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:59:16,369 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:59:16,369 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:59:16,370 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:34, output treesize:5 [2020-12-01 15:59:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-01 15:59:16,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:59:16,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2020-12-01 15:59:16,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147233897] [2020-12-01 15:59:16,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-01 15:59:16,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:16,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-01 15:59:16,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:59:16,404 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 13 states. [2020-12-01 15:59:16,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:16,659 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-12-01 15:59:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-01 15:59:16,660 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-12-01 15:59:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:16,661 INFO L225 Difference]: With dead ends: 44 [2020-12-01 15:59:16,661 INFO L226 Difference]: Without dead ends: 31 [2020-12-01 15:59:16,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-12-01 15:59:16,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-01 15:59:16,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-12-01 15:59:16,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-01 15:59:16,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-12-01 15:59:16,668 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 25 [2020-12-01 15:59:16,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:16,668 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-12-01 15:59:16,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-01 15:59:16,668 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-12-01 15:59:16,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 15:59:16,669 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:16,669 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:16,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:59:16,883 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:16,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:16,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1378869733, now seen corresponding path program 5 times [2020-12-01 15:59:16,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:16,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25243639] [2020-12-01 15:59:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 15:59:17,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25243639] [2020-12-01 15:59:17,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125207139] [2020-12-01 15:59:17,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/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 [2020-12-01 15:59:18,737 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-01 15:59:18,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:59:18,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:59:18,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:59:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 15:59:18,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:59:18,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-01 15:59:18,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470478711] [2020-12-01 15:59:18,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:59:18,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:18,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:59:18,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:59:18,820 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 10 states. [2020-12-01 15:59:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:18,873 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-12-01 15:59:18,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:59:18,876 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-12-01 15:59:18,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:18,877 INFO L225 Difference]: With dead ends: 48 [2020-12-01 15:59:18,877 INFO L226 Difference]: Without dead ends: 33 [2020-12-01 15:59:18,878 INFO L677 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 [2020-12-01 15:59:18,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-01 15:59:18,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-12-01 15:59:18,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-01 15:59:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-12-01 15:59:18,887 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29 [2020-12-01 15:59:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:18,887 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-12-01 15:59:18,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:59:18,888 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-12-01 15:59:18,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-01 15:59:18,891 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:59:18,891 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:59:19,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:59:19,092 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:59:19,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:59:19,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1005994073, now seen corresponding path program 6 times [2020-12-01 15:59:19,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:59:19,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598654352] [2020-12-01 15:59:19,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:59:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:59:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-01 15:59:19,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598654352] [2020-12-01 15:59:19,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110545836] [2020-12-01 15:59:19,296 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/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 [2020-12-01 15:59:20,374 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-01 15:59:20,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:59:20,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-01 15:59:20,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:59:20,388 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-12-01 15:59:20,389 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:59:20,390 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:59:20,391 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:59:20,391 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:5, output treesize:1 [2020-12-01 15:59:20,434 INFO L382 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 [2020-12-01 15:59:20,435 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:59:20,448 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:59:20,456 INFO L382 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 [2020-12-01 15:59:20,457 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 15:59:20,469 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:59:20,472 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:59:20,472 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:43, output treesize:17 [2020-12-01 15:59:20,637 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:59:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-12-01 15:59:20,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:59:20,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2020-12-01 15:59:20,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410879616] [2020-12-01 15:59:20,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-01 15:59:20,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:59:20,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-01 15:59:20,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-12-01 15:59:20,686 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 17 states. [2020-12-01 15:59:21,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:59:21,125 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2020-12-01 15:59:21,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-01 15:59:21,126 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2020-12-01 15:59:21,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:59:21,126 INFO L225 Difference]: With dead ends: 48 [2020-12-01 15:59:21,126 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:59:21,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-12-01 15:59:21,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:59:21,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:59:21,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:59:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:59:21,128 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-12-01 15:59:21,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:59:21,129 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:59:21,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-01 15:59:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:59:21,129 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:59:21,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-01 15:59:21,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:59:21,437 INFO L258 CegarLoopResult]: At program point L19(lines 17 20) the Hoare annotation is: (let ((.cse0 (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))) (and (= |ULTIMATE.start_main_~#array~0.offset| 0) (= ULTIMATE.start_main_~pa~0.base .cse0) (= .cse1 ULTIMATE.start_main_~pa~0.offset) (= |ULTIMATE.start_check_#res| 1) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)) (<= (select (select |#memory_int| .cse0) .cse1) ULTIMATE.start_main_~i~0))) [2020-12-01 15:59:21,437 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-12-01 15:59:21,437 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:59:21,437 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:59:21,437 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:59:21,437 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-12-01 15:59:21,437 INFO L262 CegarLoopResult]: For program point L37(lines 37 45) no Hoare annotation was computed. [2020-12-01 15:59:21,437 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:59:21,442 INFO L262 CegarLoopResult]: For program point L29-2(lines 29 32) no Hoare annotation was computed. [2020-12-01 15:59:21,442 INFO L258 CegarLoopResult]: At program point L29-3(lines 29 32) the Hoare annotation is: (= |ULTIMATE.start_main_~#array~0.offset| 0) [2020-12-01 15:59:21,442 INFO L262 CegarLoopResult]: For program point L29-4(lines 23 52) no Hoare annotation was computed. [2020-12-01 15:59:21,443 INFO L262 CegarLoopResult]: For program point L42(lines 42 44) no Hoare annotation was computed. [2020-12-01 15:59:21,443 INFO L262 CegarLoopResult]: For program point L34(lines 34 46) no Hoare annotation was computed. [2020-12-01 15:59:21,443 INFO L265 CegarLoopResult]: At program point L51(lines 22 52) the Hoare annotation is: true [2020-12-01 15:59:21,443 INFO L258 CegarLoopResult]: At program point L43(lines 23 52) the Hoare annotation is: false [2020-12-01 15:59:21,443 INFO L262 CegarLoopResult]: For program point L39-1(lines 39 41) no Hoare annotation was computed. [2020-12-01 15:59:21,444 INFO L258 CegarLoopResult]: At program point L39-3(lines 39 41) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#array~0.offset| 0) (= ULTIMATE.start_main_~pa~0.base (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|)) (= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|) 4) ULTIMATE.start_main_~pa~0.offset) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1))) [2020-12-01 15:59:21,444 INFO L262 CegarLoopResult]: For program point L39-4(lines 39 41) no Hoare annotation was computed. [2020-12-01 15:59:21,459 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-01 15:59:21,460 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-01 15:59:21,460 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-01 15:59:21,461 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-01 15:59:21,462 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,462 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,462 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-12-01 15:59:21,463 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-12-01 15:59:21,463 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,463 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,464 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-01 15:59:21,465 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-01 15:59:21,465 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-01 15:59:21,466 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-01 15:59:21,466 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,467 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,467 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-12-01 15:59:21,467 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-12-01 15:59:21,467 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,468 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,468 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-01 15:59:21,469 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-01 15:59:21,469 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,470 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,470 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-12-01 15:59:21,470 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-01 15:59:21,471 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-01 15:59:21,471 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,472 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,472 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-12-01 15:59:21,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:59:21 BoogieIcfgContainer [2020-12-01 15:59:21,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:59:21,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:59:21,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:59:21,478 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:59:21,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:59:11" (3/4) ... [2020-12-01 15:59:21,482 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:59:21,497 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-01 15:59:21,498 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-01 15:59:21,499 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:59:21,499 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:59:21,528 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((array == 0 && pa == #memory_$Pointer$[cont][cont]) && #memory_$Pointer$[cont][cont] + 4 == pa) && \result == 1) && i < unknown-#memory_int-unknown[pa][pa] + 1) && unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + 4] <= i [2020-12-01 15:59:21,547 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a311f2d5-eade-45f8-9793-19655df6deb4/bin/uautomizer/witness.graphml [2020-12-01 15:59:21,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:59:21,553 INFO L168 Benchmark]: Toolchain (without parser) took 11541.92 ms. Allocated memory was 75.5 MB in the beginning and 113.2 MB in the end (delta: 37.7 MB). Free memory was 42.1 MB in the beginning and 46.6 MB in the end (delta: -4.6 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:59:21,553 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 75.5 MB. Free memory was 49.8 MB in the beginning and 49.8 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:59:21,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.69 ms. Allocated memory is still 75.5 MB. Free memory was 41.9 MB in the beginning and 53.2 MB in the end (delta: -11.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:59:21,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.64 ms. Allocated memory is still 75.5 MB. Free memory was 53.0 MB in the beginning and 51.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:59:21,555 INFO L168 Benchmark]: Boogie Preprocessor took 32.63 ms. Allocated memory is still 75.5 MB. Free memory was 51.5 MB in the beginning and 50.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:59:21,557 INFO L168 Benchmark]: RCFGBuilder took 672.92 ms. Allocated memory was 75.5 MB in the beginning and 94.4 MB in the end (delta: 18.9 MB). Free memory was 50.1 MB in the beginning and 72.9 MB in the end (delta: -22.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:59:21,558 INFO L168 Benchmark]: TraceAbstraction took 10286.59 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 72.4 MB in the beginning and 49.8 MB in the end (delta: 22.7 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2020-12-01 15:59:21,560 INFO L168 Benchmark]: Witness Printer took 70.06 ms. Allocated memory is still 113.2 MB. Free memory was 49.8 MB in the beginning and 46.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:59:21,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 75.5 MB. Free memory was 49.8 MB in the beginning and 49.8 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 416.69 ms. Allocated memory is still 75.5 MB. Free memory was 41.9 MB in the beginning and 53.2 MB in the end (delta: -11.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.64 ms. Allocated memory is still 75.5 MB. Free memory was 53.0 MB in the beginning and 51.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.63 ms. Allocated memory is still 75.5 MB. Free memory was 51.5 MB in the beginning and 50.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 672.92 ms. Allocated memory was 75.5 MB in the beginning and 94.4 MB in the end (delta: 18.9 MB). Free memory was 50.1 MB in the beginning and 72.9 MB in the end (delta: -22.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10286.59 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 72.4 MB in the beginning and 49.8 MB in the end (delta: 22.7 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * Witness Printer took 70.06 ms. Allocated memory is still 113.2 MB. Free memory was 49.8 MB in the beginning and 46.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$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_$Pointer$.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_$Pointer$.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_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - 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_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_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: 3]: 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: 29]: Loop Invariant Derived loop invariant: array == 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant [2020-12-01 15:59:21,577 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-01 15:59:21,578 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-01 15:59:21,578 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-01 15:59:21,579 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-01 15:59:21,580 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,580 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,580 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-12-01 15:59:21,580 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-12-01 15:59:21,580 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,581 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,581 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-01 15:59:21,581 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-01 15:59:21,582 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-01 15:59:21,582 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-01 15:59:21,583 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,583 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,584 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-12-01 15:59:21,584 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-12-01 15:59:21,584 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,584 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: ((((array == 0 && pa == #memory_$Pointer$[cont][cont]) && #memory_$Pointer$[cont][cont] + 4 == pa) && \result == 1) && i < unknown-#memory_int-unknown[pa][pa] + 1) && unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + 4] <= i - InvariantResult [Line: 39]: Loop Invariant [2020-12-01 15:59:21,585 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-01 15:59:21,585 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-01 15:59:21,586 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,586 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,586 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-12-01 15:59:21,587 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-12-01 15:59:21,587 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-12-01 15:59:21,588 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,588 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-12-01 15:59:21,588 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((array == 0 && pa == #memory_$Pointer$[cont][cont]) && #memory_$Pointer$[cont][cont] + 4 == pa) && i < unknown-#memory_int-unknown[pa][pa] + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.0s, OverallIterations: 10, TraceHistogramMax: 7, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 60 SDslu, 326 SDs, 0 SdLazy, 368 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.3s 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, 83 HoareAnnotationTreeSize, 5 FomulaSimplifications, 197 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 361 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 343 ConstructedInterpolants, 6 QuantifiedInterpolants, 24807 SizeOfPredicates, 52 NumberOfNonLiveVariables, 963 ConjunctsInSsa, 103 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...