./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/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 fbde2b4d8590a43f5f4c36a2fa025463c4b5fc0a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:14:24,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:14:24,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:14:24,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:14:24,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:14:24,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:14:24,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:14:24,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:14:24,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:14:24,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:14:24,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:14:24,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:14:24,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:14:24,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:14:24,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:14:24,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:14:24,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:14:24,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:14:24,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:14:24,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:14:24,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:14:24,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:14:24,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:14:24,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:14:24,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:14:24,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:14:24,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:14:24,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:14:24,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:14:24,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:14:24,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:14:24,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:14:24,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:14:24,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:14:24,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:14:24,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:14:24,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:14:24,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:14:24,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:14:24,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:14:24,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:14:24,161 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:14:24,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:14:24,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:14:24,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:14:24,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:14:24,206 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:14:24,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:14:24,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:14:24,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:14:24,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:14:24,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:14:24,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:14:24,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:14:24,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:14:24,209 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:14:24,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:14:24,210 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:14:24,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:14:24,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:14:24,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:14:24,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:14:24,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:14:24,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:14:24,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:14:24,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:14:24,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:14:24,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:14:24,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:14:24,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:14:24,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:14:24,213 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_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbde2b4d8590a43f5f4c36a2fa025463c4b5fc0a [2020-11-29 20:14:24,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:14:24,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:14:24,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:14:24,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:14:24,587 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:14:24,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2020-11-29 20:14:24,669 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/bin/uautomizer/data/b5a9f35df/2ba946e5b60f46478ea9f6f4ac4fe471/FLAG92d8194e1 [2020-11-29 20:14:25,136 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:14:25,136 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2020-11-29 20:14:25,149 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/bin/uautomizer/data/b5a9f35df/2ba946e5b60f46478ea9f6f4ac4fe471/FLAG92d8194e1 [2020-11-29 20:14:25,495 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/bin/uautomizer/data/b5a9f35df/2ba946e5b60f46478ea9f6f4ac4fe471 [2020-11-29 20:14:25,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:14:25,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:14:25,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:14:25,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:14:25,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:14:25,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:14:25" (1/1) ... [2020-11-29 20:14:25,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12bf9037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:25, skipping insertion in model container [2020-11-29 20:14:25,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:14:25" (1/1) ... [2020-11-29 20:14:25,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:14:25,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:14:25,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:14:25,749 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:14:25,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:14:25,786 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:14:25,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:25 WrapperNode [2020-11-29 20:14:25,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:14:25,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:14:25,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:14:25,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:14:25,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:25" (1/1) ... [2020-11-29 20:14:25,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:25" (1/1) ... [2020-11-29 20:14:25,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:14:25,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:14:25,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:14:25,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:14:25,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:25" (1/1) ... [2020-11-29 20:14:25,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:25" (1/1) ... [2020-11-29 20:14:25,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:25" (1/1) ... [2020-11-29 20:14:25,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:25" (1/1) ... [2020-11-29 20:14:25,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:25" (1/1) ... [2020-11-29 20:14:25,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:25" (1/1) ... [2020-11-29 20:14:25,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:25" (1/1) ... [2020-11-29 20:14:25,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:14:25,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:14:25,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:14:25,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:14:25,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/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 [2020-11-29 20:14:25,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:14:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:14:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:14:25,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:14:26,340 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:14:26,340 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-29 20:14:26,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:14:26 BoogieIcfgContainer [2020-11-29 20:14:26,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:14:26,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:14:26,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:14:26,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:14:26,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:14:25" (1/3) ... [2020-11-29 20:14:26,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b94b791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:14:26, skipping insertion in model container [2020-11-29 20:14:26,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:25" (2/3) ... [2020-11-29 20:14:26,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b94b791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:14:26, skipping insertion in model container [2020-11-29 20:14:26,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:14:26" (3/3) ... [2020-11-29 20:14:26,352 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound2.c [2020-11-29 20:14:26,365 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:14:26,370 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 20:14:26,381 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 20:14:26,415 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:14:26,415 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:14:26,416 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:14:26,416 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:14:26,416 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:14:26,417 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:14:26,417 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:14:26,417 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:14:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-29 20:14:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:14:26,439 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:26,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:14:26,440 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:26,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:26,446 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2020-11-29 20:14:26,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:26,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977270396] [2020-11-29 20:14:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:26,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977270396] [2020-11-29 20:14:26,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:26,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:14:26,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291205239] [2020-11-29 20:14:26,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:14:26,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:26,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:14:26,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:14:26,654 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-29 20:14:26,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:26,671 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-11-29 20:14:26,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:14:26,672 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 20:14:26,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:26,683 INFO L225 Difference]: With dead ends: 39 [2020-11-29 20:14:26,683 INFO L226 Difference]: Without dead ends: 17 [2020-11-29 20:14:26,695 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 [2020-11-29 20:14:26,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-29 20:14:26,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 20:14:26,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 20:14:26,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-29 20:14:26,734 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2020-11-29 20:14:26,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:26,735 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-29 20:14:26,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:14:26,735 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-29 20:14:26,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:14:26,736 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:26,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:14:26,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:14:26,737 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:26,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:26,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2020-11-29 20:14:26,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:26,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642610062] [2020-11-29 20:14:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:26,781 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:14:26,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700800939] [2020-11-29 20:14:26,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/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 [2020-11-29 20:14:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:26,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 20:14:26,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:14:27,007 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 20:14:27,007 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:14:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:27,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642610062] [2020-11-29 20:14:27,124 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:14:27,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700800939] [2020-11-29 20:14:27,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:27,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:14:27,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526026083] [2020-11-29 20:14:27,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:14:27,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:27,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:14:27,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:14:27,128 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 6 states. [2020-11-29 20:14:27,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:27,412 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-11-29 20:14:27,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:14:27,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-29 20:14:27,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:27,415 INFO L225 Difference]: With dead ends: 29 [2020-11-29 20:14:27,415 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 20:14:27,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:14:27,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 20:14:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-11-29 20:14:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 20:14:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-29 20:14:27,423 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 9 [2020-11-29 20:14:27,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:27,424 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-29 20:14:27,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:14:27,425 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-29 20:14:27,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 20:14:27,426 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:27,426 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:14:27,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 20:14:27,653 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:27,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:27,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1122200418, now seen corresponding path program 1 times [2020-11-29 20:14:27,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:27,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686279496] [2020-11-29 20:14:27,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:27,670 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:14:27,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256430813] [2020-11-29 20:14:27,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/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 [2020-11-29 20:14:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:27,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-29 20:14:27,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:14:27,771 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 20:14:27,771 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:14:27,924 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 20:14:27,928 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:14:28,249 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:14:28,257 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:14:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:28,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686279496] [2020-11-29 20:14:28,311 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:14:28,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256430813] [2020-11-29 20:14:28,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:14:28,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 20:14:28,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027139719] [2020-11-29 20:14:28,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 20:14:28,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:28,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 20:14:28,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:14:28,314 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 11 states. [2020-11-29 20:14:28,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:28,976 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2020-11-29 20:14:28,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 20:14:28,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-11-29 20:14:28,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:28,978 INFO L225 Difference]: With dead ends: 39 [2020-11-29 20:14:28,978 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 20:14:28,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2020-11-29 20:14:28,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 20:14:28,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-29 20:14:28,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 20:14:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-11-29 20:14:28,983 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2020-11-29 20:14:28,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:28,984 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-11-29 20:14:28,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 20:14:28,984 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-11-29 20:14:28,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 20:14:28,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:28,999 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:14:29,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:14:29,217 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:29,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:29,217 INFO L82 PathProgramCache]: Analyzing trace with hash -250706221, now seen corresponding path program 1 times [2020-11-29 20:14:29,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:29,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588513473] [2020-11-29 20:14:29,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:29,230 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:14:29,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430001547] [2020-11-29 20:14:29,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/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 [2020-11-29 20:14:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:29,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 20:14:29,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:14:29,556 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:14:29,559 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:14:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:29,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588513473] [2020-11-29 20:14:29,578 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:14:29,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430001547] [2020-11-29 20:14:29,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:14:29,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 20:14:29,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223242074] [2020-11-29 20:14:29,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:14:29,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:29,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:14:29,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:14:29,581 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 9 states. [2020-11-29 20:14:29,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:29,793 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-11-29 20:14:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:14:29,795 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-11-29 20:14:29,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:29,795 INFO L225 Difference]: With dead ends: 30 [2020-11-29 20:14:29,796 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 20:14:29,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-29 20:14:29,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 20:14:29,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-11-29 20:14:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 20:14:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-29 20:14:29,805 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2020-11-29 20:14:29,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:29,806 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-29 20:14:29,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:14:29,807 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-29 20:14:29,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 20:14:29,808 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:29,808 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:14:30,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:14:30,024 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:30,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:30,025 INFO L82 PathProgramCache]: Analyzing trace with hash -609342175, now seen corresponding path program 1 times [2020-11-29 20:14:30,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:30,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763498822] [2020-11-29 20:14:30,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:30,038 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:14:30,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563536052] [2020-11-29 20:14:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/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 [2020-11-29 20:14:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:30,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 20:14:30,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:14:30,268 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-11-29 20:14:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:30,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763498822] [2020-11-29 20:14:30,417 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:14:30,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563536052] [2020-11-29 20:14:30,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:14:30,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 20:14:30,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255015419] [2020-11-29 20:14:30,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:14:30,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:30,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:14:30,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:14:30,420 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-11-29 20:14:30,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:30,570 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-11-29 20:14:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:14:30,571 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-11-29 20:14:30,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:30,572 INFO L225 Difference]: With dead ends: 34 [2020-11-29 20:14:30,572 INFO L226 Difference]: Without dead ends: 30 [2020-11-29 20:14:30,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:14:30,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-29 20:14:30,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-11-29 20:14:30,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 20:14:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-11-29 20:14:30,578 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2020-11-29 20:14:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:30,579 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-11-29 20:14:30,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:14:30,579 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-11-29 20:14:30,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 20:14:30,579 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:30,580 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:14:30,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:14:30,780 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:30,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:30,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1418688801, now seen corresponding path program 2 times [2020-11-29 20:14:30,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:30,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689754004] [2020-11-29 20:14:30,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:30,798 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:14:30,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912681415] [2020-11-29 20:14:30,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/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 [2020-11-29 20:14:30,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:14:30,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:14:30,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-29 20:14:30,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:14:31,014 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:14:31,015 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:14:31,097 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:14:31,099 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:14:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:31,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689754004] [2020-11-29 20:14:31,135 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:14:31,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912681415] [2020-11-29 20:14:31,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:14:31,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-29 20:14:31,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376213340] [2020-11-29 20:14:31,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 20:14:31,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:31,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 20:14:31,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:14:31,137 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 12 states. [2020-11-29 20:14:31,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:31,514 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-11-29 20:14:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 20:14:31,514 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-11-29 20:14:31,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:31,515 INFO L225 Difference]: With dead ends: 40 [2020-11-29 20:14:31,515 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 20:14:31,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-11-29 20:14:31,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 20:14:31,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-11-29 20:14:31,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 20:14:31,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-11-29 20:14:31,522 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2020-11-29 20:14:31,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:31,522 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-11-29 20:14:31,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 20:14:31,523 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-11-29 20:14:31,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 20:14:31,523 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:31,524 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:14:31,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 20:14:31,724 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:31,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:31,724 INFO L82 PathProgramCache]: Analyzing trace with hash -2046802029, now seen corresponding path program 2 times [2020-11-29 20:14:31,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:31,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743026816] [2020-11-29 20:14:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:31,735 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:14:31,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832513024] [2020-11-29 20:14:31,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/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 [2020-11-29 20:14:31,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:14:31,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:14:31,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:14:31,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:14:31,894 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:31,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743026816] [2020-11-29 20:14:31,895 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:14:31,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832513024] [2020-11-29 20:14:31,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:14:31,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 20:14:31,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98795357] [2020-11-29 20:14:31,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:14:31,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:31,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:14:31,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:14:31,897 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2020-11-29 20:14:32,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:32,003 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-11-29 20:14:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:14:32,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-11-29 20:14:32,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:32,007 INFO L225 Difference]: With dead ends: 42 [2020-11-29 20:14:32,007 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 20:14:32,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:14:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 20:14:32,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-29 20:14:32,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 20:14:32,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-11-29 20:14:32,014 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 27 [2020-11-29 20:14:32,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:32,014 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-11-29 20:14:32,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:14:32,015 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-11-29 20:14:32,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 20:14:32,015 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:32,016 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:14:32,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:14:32,233 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:32,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:32,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1438818641, now seen corresponding path program 3 times [2020-11-29 20:14:32,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:32,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524853404] [2020-11-29 20:14:32,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:32,244 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:14:32,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29590052] [2020-11-29 20:14:32,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/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 [2020-11-29 20:14:32,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 20:14:32,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:14:32,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-29 20:14:32,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:14:32,366 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 20:14:32,367 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:14:32,440 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:14:32,441 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:14:32,548 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:14:32,566 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:14:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:14:32,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524853404] [2020-11-29 20:14:32,685 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:14:32,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29590052] [2020-11-29 20:14:32,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:32,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-29 20:14:32,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320156111] [2020-11-29 20:14:32,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 20:14:32,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:32,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 20:14:32,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:14:32,688 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 10 states. [2020-11-29 20:14:33,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:33,150 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-11-29 20:14:33,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 20:14:33,151 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-11-29 20:14:33,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:33,152 INFO L225 Difference]: With dead ends: 33 [2020-11-29 20:14:33,152 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:14:33,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-11-29 20:14:33,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:14:33,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:14:33,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:14:33,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:14:33,153 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-11-29 20:14:33,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:33,153 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:14:33,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 20:14:33,153 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:14:33,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:14:33,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:14:33,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:14:33,699 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2020-11-29 20:14:33,852 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-11-29 20:14:33,855 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2020-11-29 20:14:33,855 INFO L277 CegarLoopResult]: At program point L52(lines 21 53) the Hoare annotation is: true [2020-11-29 20:14:33,855 INFO L274 CegarLoopResult]: For program point L15(lines 15 16) no Hoare annotation was computed. [2020-11-29 20:14:33,855 INFO L274 CegarLoopResult]: For program point L15-1(lines 15 16) no Hoare annotation was computed. [2020-11-29 20:14:33,855 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-29 20:14:33,855 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-29 20:14:33,855 INFO L274 CegarLoopResult]: For program point L40(lines 40 45) no Hoare annotation was computed. [2020-11-29 20:14:33,855 INFO L274 CegarLoopResult]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2020-11-29 20:14:33,855 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:14:33,855 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 47) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~X~0 2)) (.cse4 (<= ULTIMATE.start_main_~Y~0 2)) (.cse5 (<= 0 ULTIMATE.start_main_~X~0)) (.cse1 (= ULTIMATE.start_main_~y~0 0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (<= 0 ULTIMATE.start_main_~Y~0))) (or (and .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< ULTIMATE.start_main_~v~0 (* 2 ULTIMATE.start_main_~Y~0)) .cse1 .cse2 (= (* ULTIMATE.start_main_~Y~0 4) (+ ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~X~0)) .cse3) (and .cse0 .cse4 (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~X~0 1)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse5 .cse2 .cse3) (and .cse0 .cse4 (= ULTIMATE.start_main_~x~0 0) .cse5 (= (+ (* (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~Y~0) 2) (* ULTIMATE.start_main_~Y~0 2)) (+ ULTIMATE.start_main_~v~0 (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~X~0) 2) ULTIMATE.start_main_~X~0)) .cse1 .cse2 .cse3))) [2020-11-29 20:14:33,856 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:14:33,856 INFO L274 CegarLoopResult]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2020-11-29 20:14:33,856 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:14:33,856 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2020-11-29 20:14:33,856 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:14:33,856 INFO L274 CegarLoopResult]: For program point L14(lines 14 17) no Hoare annotation was computed. [2020-11-29 20:14:33,856 INFO L270 CegarLoopResult]: At program point L14-1(lines 36 37) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~X~0 2)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (<= 0 ULTIMATE.start_main_~Y~0))) (or (and .cse0 .cse1 (< ULTIMATE.start_main_~v~0 (* 2 ULTIMATE.start_main_~Y~0)) (= ULTIMATE.start_main_~y~0 0) .cse2 (= (* ULTIMATE.start_main_~Y~0 4) (+ ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~X~0)) .cse3) (and .cse0 (<= ULTIMATE.start_main_~Y~0 2) .cse1 (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~X~0 1)) (<= 0 ULTIMATE.start_main_~X~0) (= (+ (* (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~Y~0) 2) (* ULTIMATE.start_main_~Y~0 2)) (+ ULTIMATE.start_main_~v~0 (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~X~0) 2) ULTIMATE.start_main_~X~0)) .cse2 .cse3))) [2020-11-29 20:14:33,856 INFO L274 CegarLoopResult]: For program point L14-2(lines 14 17) no Hoare annotation was computed. [2020-11-29 20:14:33,856 INFO L277 CegarLoopResult]: At program point L14-3(lines 13 19) the Hoare annotation is: true [2020-11-29 20:14:33,856 INFO L274 CegarLoopResult]: For program point L10(lines 10 12) no Hoare annotation was computed. [2020-11-29 20:14:33,856 INFO L274 CegarLoopResult]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2020-11-29 20:14:33,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:14:33 BoogieIcfgContainer [2020-11-29 20:14:33,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:14:33,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:14:33,875 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:14:33,876 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:14:33,876 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:14:26" (3/4) ... [2020-11-29 20:14:33,879 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:14:33,887 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-29 20:14:33,887 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:14:33,887 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:14:33,888 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:14:33,943 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4b193fb1-1e9c-430d-9b8b-2403f09b43c2/bin/uautomizer/witness.graphml [2020-11-29 20:14:33,943 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:14:33,944 INFO L168 Benchmark]: Toolchain (without parser) took 8445.23 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 80.4 MB in the beginning and 104.8 MB in the end (delta: -24.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:14:33,945 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:14:33,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.59 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 84.2 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:14:33,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.01 ms. Allocated memory is still 107.0 MB. Free memory was 84.2 MB in the beginning and 82.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:14:33,946 INFO L168 Benchmark]: Boogie Preprocessor took 19.07 ms. Allocated memory is still 107.0 MB. Free memory was 82.5 MB in the beginning and 81.5 MB in the end (delta: 941.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:14:33,947 INFO L168 Benchmark]: RCFGBuilder took 482.42 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 68.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:14:33,947 INFO L168 Benchmark]: TraceAbstraction took 7531.63 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 67.8 MB in the beginning and 108.0 MB in the end (delta: -40.2 MB). Peak memory consumption was 76.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:14:33,948 INFO L168 Benchmark]: Witness Printer took 68.22 ms. Allocated memory is still 157.3 MB. Free memory was 108.0 MB in the beginning and 104.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:14:33,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.59 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 84.2 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.01 ms. Allocated memory is still 107.0 MB. Free memory was 84.2 MB in the beginning and 82.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.07 ms. Allocated memory is still 107.0 MB. Free memory was 82.5 MB in the beginning and 81.5 MB in the end (delta: 941.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 482.42 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 68.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7531.63 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 67.8 MB in the beginning and 108.0 MB in the end (delta: -40.2 MB). Peak memory consumption was 76.6 MB. Max. memory is 16.1 GB. * Witness Printer took 68.22 ms. Allocated memory is still 157.3 MB. Free memory was 108.0 MB in the beginning and 104.8 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.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((X <= 2 && 1 == cond) && v < 2 * Y) && y == 0) && cond == 1) && Y * 4 == v + X) && 0 <= Y) || (((((((X <= 2 && Y <= 2) && 1 == cond) && x <= X + 1) && 0 <= X) && x * Y * 2 + Y * 2 == v + y * X * 2 + X) && cond == 1) && 0 <= Y) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((((((X <= 2 && 1 == cond) && v < 2 * Y) && y == 0) && cond == 1) && Y * 4 == v + X) && 0 <= Y) || ((((((X <= 2 && Y <= 2) && x <= X + 1) && 1 <= cond) && 0 <= X) && cond == 1) && 0 <= Y)) || (((((((X <= 2 && Y <= 2) && x == 0) && 0 <= X) && x * Y * 2 + Y * 2 == v + y * X * 2 + X) && y == 0) && cond == 1) && 0 <= Y) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 142 SDslu, 213 SDs, 0 SdLazy, 512 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=7, 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, 8 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 18 NumberOfFragments, 166 HoareAnnotationTreeSize, 4 FomulaSimplifications, 634 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 530 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 147 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 139 ConstructedInterpolants, 5 QuantifiedInterpolants, 28421 SizeOfPredicates, 75 NumberOfNonLiveVariables, 674 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 35/75 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...