./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cbb17f5b7bb6fe0e12d1310641ba9d20bfc6717 ................................................................................................................................................................................................................................................................................................................................... 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 02:21:06,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:06,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:06,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:06,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:06,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:06,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:06,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:06,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:06,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:06,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:06,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:06,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:06,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:06,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:06,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:06,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:06,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:06,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:06,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:06,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:06,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:06,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:06,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:06,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:06,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:06,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:06,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:06,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:06,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:06,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:06,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:06,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:06,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:06,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:06,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:06,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:06,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:06,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:06,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:06,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:06,628 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:21:06,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:06,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:06,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:06,679 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:06,680 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:06,680 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:06,680 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:06,680 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:06,688 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:06,689 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:06,690 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:06,690 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:06,691 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:06,691 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:06,691 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:06,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:06,693 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:06,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:06,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:06,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:06,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:06,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:06,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:06,694 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:06,694 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:06,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:06,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:06,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:06,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:06,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:06,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:06,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:06,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:06,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:06,697 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:06,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:06,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:06,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:06,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:06,698 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cbb17f5b7bb6fe0e12d1310641ba9d20bfc6717 [2021-10-11 02:21:07,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:07,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:07,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:07,068 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:07,069 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:07,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c [2021-10-11 02:21:07,149 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI/data/ef49f14c9/d06ea93dc90443099cb2f92c4ac7dd19/FLAG20e2e2c70 [2021-10-11 02:21:07,691 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:07,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c [2021-10-11 02:21:07,705 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI/data/ef49f14c9/d06ea93dc90443099cb2f92c4ac7dd19/FLAG20e2e2c70 [2021-10-11 02:21:08,035 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI/data/ef49f14c9/d06ea93dc90443099cb2f92c4ac7dd19 [2021-10-11 02:21:08,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:08,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:08,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:08,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:08,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:08,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:08" (1/1) ... [2021-10-11 02:21:08,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67417952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:08, skipping insertion in model container [2021-10-11 02:21:08,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:08" (1/1) ... [2021-10-11 02:21:08,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:08,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:08,326 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c[319,332] [2021-10-11 02:21:08,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:08,350 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:08,365 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c[319,332] [2021-10-11 02:21:08,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:08,385 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:08,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:08 WrapperNode [2021-10-11 02:21:08,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:08,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:08,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:08,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:08,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:08" (1/1) ... [2021-10-11 02:21:08,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:08" (1/1) ... [2021-10-11 02:21:08,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:08,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:08,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:08,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:08,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:08" (1/1) ... [2021-10-11 02:21:08,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:08" (1/1) ... [2021-10-11 02:21:08,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:08" (1/1) ... [2021-10-11 02:21:08,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:08" (1/1) ... [2021-10-11 02:21:08,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:08" (1/1) ... [2021-10-11 02:21:08,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:08" (1/1) ... [2021-10-11 02:21:08,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:08" (1/1) ... [2021-10-11 02:21:08,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:08,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:08,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:08,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:08,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:08" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI/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 02:21:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:08,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:09,141 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:09,141 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:21:09,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:09 BoogieIcfgContainer [2021-10-11 02:21:09,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:09,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:09,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:09,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:09,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:08" (1/3) ... [2021-10-11 02:21:09,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0a058a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:09, skipping insertion in model container [2021-10-11 02:21:09,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:08" (2/3) ... [2021-10-11 02:21:09,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0a058a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:09, skipping insertion in model container [2021-10-11 02:21:09,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:09" (3/3) ... [2021-10-11 02:21:09,155 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_12.c [2021-10-11 02:21:09,176 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:09,180 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:21:09,194 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:21:09,240 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:09,240 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:09,240 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:09,240 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:09,240 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:09,241 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:09,241 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:09,241 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:09,265 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2021-10-11 02:21:09,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:21:09,271 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:09,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:21:09,272 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:09,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:09,281 INFO L82 PathProgramCache]: Analyzing trace with hash 2038122, now seen corresponding path program 1 times [2021-10-11 02:21:09,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:09,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175517636] [2021-10-11 02:21:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:09,648 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 02:21:09,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175517636] [2021-10-11 02:21:09,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:09,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:09,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547910474] [2021-10-11 02:21:09,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:09,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:09,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:09,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:09,681 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2021-10-11 02:21:09,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:09,792 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-10-11 02:21:09,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:21:09,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2021-10-11 02:21:09,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:09,807 INFO L225 Difference]: With dead ends: 15 [2021-10-11 02:21:09,808 INFO L226 Difference]: Without dead ends: 6 [2021-10-11 02:21:09,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:09,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-11 02:21:09,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-11 02:21:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-11 02:21:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-10-11 02:21:09,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2021-10-11 02:21:09,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:09,855 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-10-11 02:21:09,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:09,856 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2021-10-11 02:21:09,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:21:09,856 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:09,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:21:09,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:21:09,857 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:09,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:09,861 INFO L82 PathProgramCache]: Analyzing trace with hash 63139463, now seen corresponding path program 1 times [2021-10-11 02:21:09,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:09,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517193884] [2021-10-11 02:21:09,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:10,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517193884] [2021-10-11 02:21:10,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037965022] [2021-10-11 02:21:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI/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 02:21:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:10,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:21:10,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:10,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:10,314 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2021-10-11 02:21:10,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:21:10,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:21:10,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2021-10-11 02:21:10,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536983753] [2021-10-11 02:21:10,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:10,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:10,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:10,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:21:10,397 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2021-10-11 02:21:10,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:10,412 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2021-10-11 02:21:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:10,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:21:10,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:10,413 INFO L225 Difference]: With dead ends: 6 [2021-10-11 02:21:10,426 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:21:10,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:10,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:21:10,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:21:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:21:10,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:21:10,429 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-10-11 02:21:10,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:10,435 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:21:10,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:10,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:21:10,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:21:10,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:21:10,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:21:10,678 INFO L258 CegarLoopResult]: At program point L4-3(line 4) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-10-11 02:21:10,679 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:21:10,679 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:21:10,679 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2021-10-11 02:21:10,679 INFO L258 CegarLoopResult]: At program point L10-2(lines 10 14) the Hoare annotation is: (= (mod ULTIMATE.start_main_~z~0 2) 0) [2021-10-11 02:21:10,679 INFO L262 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2021-10-11 02:21:10,679 INFO L262 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2021-10-11 02:21:10,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:10 BoogieIcfgContainer [2021-10-11 02:21:10,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:10,696 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:10,696 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:10,697 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:10,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:09" (3/4) ... [2021-10-11 02:21:10,700 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:21:10,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:21:10,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:21:10,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:21:10,712 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:21:10,767 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47dae7a-acf9-4ec7-b9fe-8180a9e87992/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:10,767 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:10,769 INFO L168 Benchmark]: Toolchain (without parser) took 2727.85 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 44.9 MB in the beginning and 71.7 MB in the end (delta: -26.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:10,769 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory is still 60.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:10,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.74 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 44.6 MB in the beginning and 75.9 MB in the end (delta: -31.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:10,771 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.88 ms. Allocated memory is still 98.6 MB. Free memory was 75.9 MB in the beginning and 74.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:10,771 INFO L168 Benchmark]: Boogie Preprocessor took 49.60 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 73.5 MB in the end (delta: 813.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:10,771 INFO L168 Benchmark]: RCFGBuilder took 656.99 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 58.5 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:10,772 INFO L168 Benchmark]: TraceAbstraction took 1550.11 ms. Allocated memory is still 98.6 MB. Free memory was 57.8 MB in the beginning and 73.8 MB in the end (delta: -15.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:10,772 INFO L168 Benchmark]: Witness Printer took 71.22 ms. Allocated memory is still 98.6 MB. Free memory was 73.8 MB in the beginning and 71.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:10,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory is still 60.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 343.74 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 44.6 MB in the beginning and 75.9 MB in the end (delta: -31.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.88 ms. Allocated memory is still 98.6 MB. Free memory was 75.9 MB in the beginning and 74.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.60 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 73.5 MB in the end (delta: 813.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 656.99 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 58.5 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1550.11 ms. Allocated memory is still 98.6 MB. Free memory was 57.8 MB in the beginning and 73.8 MB in the end (delta: -15.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 71.22 ms. Allocated memory is still 98.6 MB. Free memory was 73.8 MB in the beginning and 71.7 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: 4]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: z % 2 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 7 SDslu, 7 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 9 HoareAnnotationTreeSize, 2 FomulaSimplifications, 19 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 232 SizeOfPredicates, 2 NumberOfNonLiveVariables, 49 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/3 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...