./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0564e568992a96ba006237c1af458e049de52506 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:32:20,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:32:20,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:32:20,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:32:20,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:32:20,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:32:20,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:32:20,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:32:20,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:32:20,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:32:20,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:32:20,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:32:20,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:32:20,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:32:20,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:32:20,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:32:20,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:32:20,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:32:20,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:32:20,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:32:20,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:32:20,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:32:20,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:32:20,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:32:20,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:32:20,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:32:20,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:32:20,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:32:20,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:32:20,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:32:20,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:32:20,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:32:20,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:32:20,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:32:20,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:32:20,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:32:20,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:32:20,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:32:20,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:32:20,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:32:20,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:32:20,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-11 00:32:20,270 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:32:20,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:32:20,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:32:20,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:32:20,280 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:32:20,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:32:20,280 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:32:20,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:32:20,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:32:20,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:32:20,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:32:20,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:32:20,291 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 00:32:20,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:32:20,292 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:32:20,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:32:20,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:32:20,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:32:20,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:32:20,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:32:20,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:32:20,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:32:20,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:32:20,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:32:20,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:32:20,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:32:20,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:32:20,296 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_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0564e568992a96ba006237c1af458e049de52506 [2021-10-11 00:32:20,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:32:20,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:32:20,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:32:20,716 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:32:20,717 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:32:20,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2021-10-11 00:32:20,805 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/data/043aeeba3/6bb5d67148e44f98a79c8cedcc5bf6be/FLAG5f5b6bd10 [2021-10-11 00:32:21,384 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:32:21,384 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2021-10-11 00:32:21,397 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/data/043aeeba3/6bb5d67148e44f98a79c8cedcc5bf6be/FLAG5f5b6bd10 [2021-10-11 00:32:21,732 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/data/043aeeba3/6bb5d67148e44f98a79c8cedcc5bf6be [2021-10-11 00:32:21,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:32:21,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:32:21,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:32:21,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:32:21,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:32:21,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:32:21" (1/1) ... [2021-10-11 00:32:21,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c0e899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:21, skipping insertion in model container [2021-10-11 00:32:21,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:32:21" (1/1) ... [2021-10-11 00:32:21,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:32:21,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:32:21,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:32:21,965 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:32:22,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:32:22,020 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:32:22,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:22 WrapperNode [2021-10-11 00:32:22,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:32:22,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:32:22,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:32:22,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:32:22,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:22" (1/1) ... [2021-10-11 00:32:22,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:22" (1/1) ... [2021-10-11 00:32:22,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:32:22,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:32:22,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:32:22,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:32:22,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:22" (1/1) ... [2021-10-11 00:32:22,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:22" (1/1) ... [2021-10-11 00:32:22,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:22" (1/1) ... [2021-10-11 00:32:22,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:22" (1/1) ... [2021-10-11 00:32:22,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:22" (1/1) ... [2021-10-11 00:32:22,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:22" (1/1) ... [2021-10-11 00:32:22,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:22" (1/1) ... [2021-10-11 00:32:22,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:32:22,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:32:22,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:32:22,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:32:22,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:22" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:32:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:32:22,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:32:22,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:32:22,385 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 00:32:22,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:32:22 BoogieIcfgContainer [2021-10-11 00:32:22,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:32:22,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:32:22,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:32:22,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:32:22,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:32:21" (1/3) ... [2021-10-11 00:32:22,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6323ab72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:32:22, skipping insertion in model container [2021-10-11 00:32:22,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:22" (2/3) ... [2021-10-11 00:32:22,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6323ab72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:32:22, skipping insertion in model container [2021-10-11 00:32:22,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:32:22" (3/3) ... [2021-10-11 00:32:22,398 INFO L111 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2021-10-11 00:32:22,416 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:32:22,419 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 00:32:22,433 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 00:32:22,462 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:32:22,462 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:32:22,462 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:32:22,463 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:32:22,463 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:32:22,463 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:32:22,463 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:32:22,463 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:32:22,479 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2021-10-11 00:32:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 00:32:22,485 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:22,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 00:32:22,486 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:32:22,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:22,494 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-11 00:32:22,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:22,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791148744] [2021-10-11 00:32:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:22,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791148744] [2021-10-11 00:32:22,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:22,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 00:32:22,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558240737] [2021-10-11 00:32:22,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:32:22,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:22,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:32:22,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:32:22,694 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2021-10-11 00:32:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:22,756 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-10-11 00:32:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:32:22,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 00:32:22,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:22,769 INFO L225 Difference]: With dead ends: 26 [2021-10-11 00:32:22,769 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 00:32:22,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:32:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 00:32:22,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-11 00:32:22,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 00:32:22,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-11 00:32:22,812 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2021-10-11 00:32:22,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:22,813 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-11 00:32:22,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:32:22,813 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-11 00:32:22,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 00:32:22,814 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:22,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 00:32:22,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:32:22,815 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:32:22,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:22,816 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-10-11 00:32:22,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:22,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384091995] [2021-10-11 00:32:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:22,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384091995] [2021-10-11 00:32:22,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:22,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:32:22,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23726752] [2021-10-11 00:32:22,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:32:22,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:22,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:32:22,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:32:22,898 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2021-10-11 00:32:23,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:23,038 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-11 00:32:23,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:32:23,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2021-10-11 00:32:23,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:23,040 INFO L225 Difference]: With dead ends: 17 [2021-10-11 00:32:23,040 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 00:32:23,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:32:23,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 00:32:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-10-11 00:32:23,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 00:32:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-11 00:32:23,047 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2021-10-11 00:32:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:23,047 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-11 00:32:23,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:32:23,048 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-11 00:32:23,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:32:23,049 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:23,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:32:23,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:32:23,050 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:32:23,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:23,051 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-10-11 00:32:23,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:23,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246648722] [2021-10-11 00:32:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:23,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246648722] [2021-10-11 00:32:23,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:23,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 00:32:23,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84038444] [2021-10-11 00:32:23,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:32:23,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:23,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:32:23,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:32:23,089 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2021-10-11 00:32:23,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:23,108 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-11 00:32:23,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:32:23,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 00:32:23,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:23,110 INFO L225 Difference]: With dead ends: 14 [2021-10-11 00:32:23,110 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 00:32:23,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:32:23,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 00:32:23,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-11 00:32:23,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 00:32:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-11 00:32:23,116 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2021-10-11 00:32:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:23,117 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-11 00:32:23,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:32:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-11 00:32:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:32:23,118 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:23,118 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:23,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:32:23,119 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:32:23,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:23,120 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2021-10-11 00:32:23,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:23,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127667926] [2021-10-11 00:32:23,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:23,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127667926] [2021-10-11 00:32:23,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959524663] [2021-10-11 00:32:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:32:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:23,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:32:23,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:32:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:23,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:32:23,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2021-10-11 00:32:23,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048437140] [2021-10-11 00:32:23,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:32:23,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:23,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:32:23,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:32:23,432 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2021-10-11 00:32:23,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:23,537 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-11 00:32:23,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:32:23,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-10-11 00:32:23,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:23,539 INFO L225 Difference]: With dead ends: 14 [2021-10-11 00:32:23,539 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 00:32:23,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:32:23,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 00:32:23,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-11 00:32:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 00:32:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-11 00:32:23,548 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2021-10-11 00:32:23,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:23,549 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-11 00:32:23,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:32:23,552 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-11 00:32:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:32:23,553 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:23,553 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-11 00:32:23,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:32:23,776 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:32:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:23,777 INFO L82 PathProgramCache]: Analyzing trace with hash 720506461, now seen corresponding path program 1 times [2021-10-11 00:32:23,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:23,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570677732] [2021-10-11 00:32:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:23,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570677732] [2021-10-11 00:32:23,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347798720] [2021-10-11 00:32:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:32:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:23,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:32:23,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:32:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:23,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:32:23,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-11 00:32:23,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340049889] [2021-10-11 00:32:23,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:32:23,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:23,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:32:23,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:32:23,957 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2021-10-11 00:32:24,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:24,054 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-10-11 00:32:24,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:32:24,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-10-11 00:32:24,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:24,057 INFO L225 Difference]: With dead ends: 20 [2021-10-11 00:32:24,057 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 00:32:24,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:32:24,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 00:32:24,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-10-11 00:32:24,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 00:32:24,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-11 00:32:24,070 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2021-10-11 00:32:24,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:24,072 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-11 00:32:24,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:32:24,072 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-11 00:32:24,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:32:24,073 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:24,074 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1] [2021-10-11 00:32:24,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:32:24,287 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:32:24,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:24,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1635256875, now seen corresponding path program 2 times [2021-10-11 00:32:24,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:24,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439269971] [2021-10-11 00:32:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:24,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:24,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439269971] [2021-10-11 00:32:24,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666644636] [2021-10-11 00:32:24,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:32:24,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:32:24,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:32:24,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:32:24,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:32:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:24,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:32:24,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-11 00:32:24,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241465891] [2021-10-11 00:32:24,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:32:24,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:24,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:32:24,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:32:24,460 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 7 states. [2021-10-11 00:32:24,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:24,545 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-11 00:32:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:32:24,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2021-10-11 00:32:24,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:24,547 INFO L225 Difference]: With dead ends: 25 [2021-10-11 00:32:24,547 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 00:32:24,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:32:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 00:32:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-11 00:32:24,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 00:32:24,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-11 00:32:24,568 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 14 [2021-10-11 00:32:24,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:24,568 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-11 00:32:24,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:32:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-11 00:32:24,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:32:24,569 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:24,569 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1] [2021-10-11 00:32:24,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:32:24,770 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:32:24,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:24,771 INFO L82 PathProgramCache]: Analyzing trace with hash 637353757, now seen corresponding path program 3 times [2021-10-11 00:32:24,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:24,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347977331] [2021-10-11 00:32:24,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:24,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347977331] [2021-10-11 00:32:24,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418882859] [2021-10-11 00:32:24,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:32:24,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 00:32:24,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:32:24,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:32:24,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:32:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-11 00:32:24,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:32:24,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2021-10-11 00:32:24,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073911488] [2021-10-11 00:32:24,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:32:24,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:24,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:32:24,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:32:24,986 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 5 states. [2021-10-11 00:32:25,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:25,029 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-11 00:32:25,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:32:25,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2021-10-11 00:32:25,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:25,032 INFO L225 Difference]: With dead ends: 22 [2021-10-11 00:32:25,032 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 00:32:25,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:32:25,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 00:32:25,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-11 00:32:25,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 00:32:25,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-10-11 00:32:25,042 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2021-10-11 00:32:25,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:25,043 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-10-11 00:32:25,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:32:25,043 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-10-11 00:32:25,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 00:32:25,045 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:25,045 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2021-10-11 00:32:25,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:32:25,263 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:32:25,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:25,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 1 times [2021-10-11 00:32:25,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:25,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142807443] [2021-10-11 00:32:25,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:25,378 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:25,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142807443] [2021-10-11 00:32:25,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587269341] [2021-10-11 00:32:25,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:32:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:25,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:32:25,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:32:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:25,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:32:25,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-11 00:32:25,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993192560] [2021-10-11 00:32:25,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:32:25,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:25,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:32:25,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:32:25,479 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 6 states. [2021-10-11 00:32:25,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:25,518 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-10-11 00:32:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:32:25,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2021-10-11 00:32:25,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:25,520 INFO L225 Difference]: With dead ends: 28 [2021-10-11 00:32:25,520 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 00:32:25,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:32:25,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 00:32:25,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-10-11 00:32:25,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 00:32:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-11 00:32:25,525 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2021-10-11 00:32:25,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:25,526 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-11 00:32:25,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:32:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-11 00:32:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 00:32:25,527 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:25,527 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2021-10-11 00:32:25,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:32:25,755 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:32:25,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:25,756 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 2 times [2021-10-11 00:32:25,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:25,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343664347] [2021-10-11 00:32:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:25,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343664347] [2021-10-11 00:32:25,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536382583] [2021-10-11 00:32:25,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:32:25,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:32:25,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:32:25,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:32:25,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:32:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:25,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:32:25,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-11 00:32:25,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632558175] [2021-10-11 00:32:25,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:32:25,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:25,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:32:25,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:32:25,957 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 7 states. [2021-10-11 00:32:26,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:26,007 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-10-11 00:32:26,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:32:26,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2021-10-11 00:32:26,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:26,009 INFO L225 Difference]: With dead ends: 33 [2021-10-11 00:32:26,009 INFO L226 Difference]: Without dead ends: 32 [2021-10-11 00:32:26,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:32:26,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-11 00:32:26,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-11 00:32:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 00:32:26,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-11 00:32:26,015 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2021-10-11 00:32:26,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:26,015 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-11 00:32:26,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:32:26,015 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-11 00:32:26,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 00:32:26,016 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:26,017 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2021-10-11 00:32:26,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:32:26,217 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:32:26,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:26,218 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 3 times [2021-10-11 00:32:26,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:26,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494302013] [2021-10-11 00:32:26,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:32:26,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494302013] [2021-10-11 00:32:26,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970369980] [2021-10-11 00:32:26,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:32:26,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-11 00:32:26,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:32:26,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 00:32:26,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:32:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 00:32:26,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:32:26,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2021-10-11 00:32:26,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915958808] [2021-10-11 00:32:26,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-10-11 00:32:26,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:26,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-11 00:32:26,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:32:26,651 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 15 states. [2021-10-11 00:32:27,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:27,499 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-10-11 00:32:27,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-11 00:32:27,499 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2021-10-11 00:32:27,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:27,500 INFO L225 Difference]: With dead ends: 38 [2021-10-11 00:32:27,500 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:32:27,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=336, Invalid=924, Unknown=0, NotChecked=0, Total=1260 [2021-10-11 00:32:27,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:32:27,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:32:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:32:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:32:27,503 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-10-11 00:32:27,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:27,503 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:32:27,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-10-11 00:32:27,503 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:32:27,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:32:27,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 00:32:27,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:32:27,826 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-11 00:32:27,827 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:32:27,828 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-11 00:32:27,828 INFO L265 CegarLoopResult]: At program point L21(lines 13 22) the Hoare annotation is: true [2021-10-11 00:32:27,828 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-11 00:32:27,828 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-11 00:32:27,828 INFO L258 CegarLoopResult]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse0 (<= 24 ULTIMATE.start_main_~y~0))) (or (and (<= ULTIMATE.start_main_~y~0 24) (<= ULTIMATE.start_main_~x~0 2147483624) .cse0) (and (<= ULTIMATE.start_main_~y~0 (+ (div (+ (* ULTIMATE.start_main_~x~0 (- 1)) 2147483648) 2) 1)) (<= ULTIMATE.start_main_~y~0 2147483647) .cse0) (and (<= 23 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~y~0 2147483624)) (<= ULTIMATE.start_main_~y~0 23)))) [2021-10-11 00:32:27,828 INFO L262 CegarLoopResult]: For program point L17-3(lines 17 20) no Hoare annotation was computed. [2021-10-11 00:32:27,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-11 00:32:27,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-11 00:32:27,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:32:27,829 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:32:27,829 INFO L262 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2021-10-11 00:32:27,829 INFO L262 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-10-11 00:32:27,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:32:27 BoogieIcfgContainer [2021-10-11 00:32:27,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:32:27,859 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:32:27,859 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:32:27,860 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:32:27,860 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:32:22" (3/4) ... [2021-10-11 00:32:27,865 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:32:27,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 00:32:27,878 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 00:32:27,911 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884319bf-9ff3-49eb-a4c2-ff6f0fd9522c/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:32:27,911 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:32:27,913 INFO L168 Benchmark]: Toolchain (without parser) took 6173.81 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 82.9 MB in the beginning and 70.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:27,913 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 83.9 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:32:27,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.29 ms. Allocated memory is still 113.2 MB. Free memory was 82.6 MB in the beginning and 90.5 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:27,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.79 ms. Allocated memory is still 113.2 MB. Free memory was 90.5 MB in the beginning and 89.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:32:27,915 INFO L168 Benchmark]: Boogie Preprocessor took 19.51 ms. Allocated memory is still 113.2 MB. Free memory was 89.2 MB in the beginning and 88.5 MB in the end (delta: 776.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:27,916 INFO L168 Benchmark]: RCFGBuilder took 312.12 ms. Allocated memory is still 113.2 MB. Free memory was 88.5 MB in the beginning and 79.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:27,917 INFO L168 Benchmark]: TraceAbstraction took 5469.53 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 79.2 MB in the beginning and 72.8 MB in the end (delta: 6.3 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:27,917 INFO L168 Benchmark]: Witness Printer took 51.57 ms. Allocated memory is still 136.3 MB. Free memory was 72.8 MB in the beginning and 70.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:27,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 83.9 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.29 ms. Allocated memory is still 113.2 MB. Free memory was 82.6 MB in the beginning and 90.5 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.79 ms. Allocated memory is still 113.2 MB. Free memory was 90.5 MB in the beginning and 89.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.51 ms. Allocated memory is still 113.2 MB. Free memory was 89.2 MB in the beginning and 88.5 MB in the end (delta: 776.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 312.12 ms. Allocated memory is still 113.2 MB. Free memory was 88.5 MB in the beginning and 79.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5469.53 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 79.2 MB in the beginning and 72.8 MB in the end (delta: 6.3 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. * Witness Printer took 51.57 ms. Allocated memory is still 136.3 MB. Free memory was 72.8 MB in the beginning and 70.8 MB in the end (delta: 2.1 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: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((y <= 24 && x <= 2147483624) && 24 <= y) || ((y <= (x * -1 + 2147483648) / 2 + 1 && y <= 2147483647) && 24 <= y)) || ((23 <= y && x <= y + 2147483624) && y <= 23) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 92 SDslu, 19 SDs, 0 SdLazy, 284 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 11 NumberOfFragments, 42 HoareAnnotationTreeSize, 2 FomulaSimplifications, 150 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 263 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 14882 SizeOfPredicates, 2 NumberOfNonLiveVariables, 229 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 75/366 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...