./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn2f.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_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/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_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn2f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/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_dfb6aba2-c269-4c18-b3af-e5900cc70e18/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 d865065a7c8613a66332b84e9d5b1d95cce65492 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:32:14,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:14,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:14,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:14,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:14,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:14,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:14,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:14,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:14,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:14,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:14,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:14,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:14,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:14,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:14,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:14,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:14,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:14,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:14,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:14,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:14,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:14,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:14,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:14,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:14,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:14,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:14,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:14,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:14,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:14,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:14,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:14,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:14,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:14,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:14,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:14,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:14,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:14,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:14,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:14,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:14,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:32:14,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:14,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:14,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:14,880 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:14,881 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:14,881 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:14,881 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:14,888 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:14,888 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:14,888 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:14,889 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:14,890 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:14,890 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:14,890 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:14,891 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:14,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:14,892 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:14,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:14,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:14,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:14,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:32:14,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:14,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:32:14,893 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:14,894 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:14,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:32:14,894 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:14,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:32:14,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:14,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:14,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:14,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:14,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:14,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:32:14,898 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:14,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:14,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:32:14,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:14,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:14,899 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_dfb6aba2-c269-4c18-b3af-e5900cc70e18/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d865065a7c8613a66332b84e9d5b1d95cce65492 [2021-10-11 02:32:15,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:15,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:15,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:15,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:15,217 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:15,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/array-fpi/eqn2f.c [2021-10-11 02:32:15,301 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI/data/90e442dc5/992ca7e3ced14531b1cc666a5709522e/FLAGed50a2db8 [2021-10-11 02:32:15,833 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:15,834 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/sv-benchmarks/c/array-fpi/eqn2f.c [2021-10-11 02:32:15,840 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI/data/90e442dc5/992ca7e3ced14531b1cc666a5709522e/FLAGed50a2db8 [2021-10-11 02:32:16,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI/data/90e442dc5/992ca7e3ced14531b1cc666a5709522e [2021-10-11 02:32:16,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:16,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:16,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:16,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:16,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:16,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:16" (1/1) ... [2021-10-11 02:32:16,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53fd7f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:16, skipping insertion in model container [2021-10-11 02:32:16,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:16" (1/1) ... [2021-10-11 02:32:16,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:16,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:16,448 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_dfb6aba2-c269-4c18-b3af-e5900cc70e18/sv-benchmarks/c/array-fpi/eqn2f.c[588,601] [2021-10-11 02:32:16,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:16,493 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:16,511 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_dfb6aba2-c269-4c18-b3af-e5900cc70e18/sv-benchmarks/c/array-fpi/eqn2f.c[588,601] [2021-10-11 02:32:16,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:16,553 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:16,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:16 WrapperNode [2021-10-11 02:32:16,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:16,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:16,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:16,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:16,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:16" (1/1) ... [2021-10-11 02:32:16,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:16" (1/1) ... [2021-10-11 02:32:16,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:16,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:16,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:16,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:16,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:16" (1/1) ... [2021-10-11 02:32:16,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:16" (1/1) ... [2021-10-11 02:32:16,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:16" (1/1) ... [2021-10-11 02:32:16,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:16" (1/1) ... [2021-10-11 02:32:16,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:16" (1/1) ... [2021-10-11 02:32:16,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:16" (1/1) ... [2021-10-11 02:32:16,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:16" (1/1) ... [2021-10-11 02:32:16,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:16,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:16,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:16,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:16,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:16" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/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 02:32:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:32:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:32:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:32:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:16,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:16,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:32:17,176 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:17,176 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-11 02:32:17,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:17 BoogieIcfgContainer [2021-10-11 02:32:17,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:17,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:17,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:17,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:17,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:16" (1/3) ... [2021-10-11 02:32:17,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a96acad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:17, skipping insertion in model container [2021-10-11 02:32:17,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:16" (2/3) ... [2021-10-11 02:32:17,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a96acad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:17, skipping insertion in model container [2021-10-11 02:32:17,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:17" (3/3) ... [2021-10-11 02:32:17,204 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn2f.c [2021-10-11 02:32:17,222 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:17,224 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:32:17,233 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:32:17,258 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:17,259 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:32:17,259 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:17,259 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:17,260 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:17,260 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:17,260 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:17,260 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:17,275 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-10-11 02:32:17,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:32:17,282 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:17,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:17,283 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:17,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:17,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1777971491, now seen corresponding path program 1 times [2021-10-11 02:32:17,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:17,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504952059] [2021-10-11 02:32:17,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:17,467 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:32:17,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232871197] [2021-10-11 02:32:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/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 02:32:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:17,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-11 02:32:17,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:17,736 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:17,737 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 39 [2021-10-11 02:32:17,742 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:17,781 INFO L625 ElimStorePlain]: treesize reduction 16, result has 64.4 percent of original size [2021-10-11 02:32:17,788 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:17,788 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:14 [2021-10-11 02:32:17,867 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 02:32:17,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:17,986 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 02:32:17,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504952059] [2021-10-11 02:32:17,987 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:17,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232871197] [2021-10-11 02:32:17,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:17,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-11 02:32:17,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75750145] [2021-10-11 02:32:17,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:32:17,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:18,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:32:18,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:32:18,009 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 9 states. [2021-10-11 02:32:18,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:18,281 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2021-10-11 02:32:18,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 02:32:18,283 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 7 [2021-10-11 02:32:18,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:18,291 INFO L225 Difference]: With dead ends: 42 [2021-10-11 02:32:18,291 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 02:32:18,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:32:18,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 02:32:18,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 13. [2021-10-11 02:32:18,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:32:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-10-11 02:32:18,327 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 7 [2021-10-11 02:32:18,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:18,328 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-10-11 02:32:18,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:32:18,328 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2021-10-11 02:32:18,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:32:18,329 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:18,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:18,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-11 02:32:18,555 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:18,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:18,556 INFO L82 PathProgramCache]: Analyzing trace with hash -808830514, now seen corresponding path program 1 times [2021-10-11 02:32:18,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:18,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319447066] [2021-10-11 02:32:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:18,577 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:32:18,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14651251] [2021-10-11 02:32:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:18,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:32:18,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:18,682 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 02:32:18,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:18,703 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 02:32:18,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319447066] [2021-10-11 02:32:18,704 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:18,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14651251] [2021-10-11 02:32:18,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1196931411] [2021-10-11 02:32:18,727 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-11 02:32:18,727 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:32:18,732 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:32:18,738 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:32:18,738 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:32:18,935 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:32:19,997 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:32:20,162 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2021-10-11 02:32:20,314 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-10-11 02:32:20,512 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2021-10-11 02:32:20,708 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2021-10-11 02:32:20,881 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-10-11 02:32:20,883 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:20,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:32:20,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-11 02:32:20,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844376616] [2021-10-11 02:32:20,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:32:20,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:20,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:32:20,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:32:20,886 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand 6 states. [2021-10-11 02:32:20,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:20,980 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-10-11 02:32:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:32:20,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-10-11 02:32:20,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:20,981 INFO L225 Difference]: With dead ends: 29 [2021-10-11 02:32:20,981 INFO L226 Difference]: Without dead ends: 24 [2021-10-11 02:32:20,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:32:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-11 02:32:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2021-10-11 02:32:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:32:20,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-10-11 02:32:20,986 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2021-10-11 02:32:20,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:20,986 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-10-11 02:32:20,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:32:20,986 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2021-10-11 02:32:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:32:20,987 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:20,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:21,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:21,191 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:21,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:21,192 INFO L82 PathProgramCache]: Analyzing trace with hash -726637145, now seen corresponding path program 1 times [2021-10-11 02:32:21,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:21,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747098851] [2021-10-11 02:32:21,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:21,208 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:32:21,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470031237] [2021-10-11 02:32:21,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI/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 02:32:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:21,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:32:21,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:21,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:21,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747098851] [2021-10-11 02:32:21,360 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:21,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470031237] [2021-10-11 02:32:21,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:21,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-11 02:32:21,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536139114] [2021-10-11 02:32:21,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:21,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:21,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:21,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:21,368 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 5 states. [2021-10-11 02:32:21,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:21,405 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2021-10-11 02:32:21,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:21,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-10-11 02:32:21,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:21,407 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:32:21,407 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 02:32:21,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:21,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 02:32:21,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2021-10-11 02:32:21,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:32:21,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-10-11 02:32:21,411 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2021-10-11 02:32:21,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:21,411 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-10-11 02:32:21,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:21,412 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-10-11 02:32:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:32:21,412 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:21,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:21,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:21,627 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:21,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:21,628 INFO L82 PathProgramCache]: Analyzing trace with hash 686879324, now seen corresponding path program 1 times [2021-10-11 02:32:21,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:21,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926801179] [2021-10-11 02:32:21,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:21,666 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:32:21,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195039040] [2021-10-11 02:32:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI/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 02:32:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:21,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-11 02:32:21,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:22,408 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2021-10-11 02:32:22,617 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2021-10-11 02:32:22,838 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 02:32:22,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:22,997 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 02:32:22,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926801179] [2021-10-11 02:32:22,998 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:22,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195039040] [2021-10-11 02:32:22,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1438444787] [2021-10-11 02:32:23,001 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-11 02:32:23,001 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:32:23,002 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:32:23,002 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:32:23,003 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:32:23,110 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:32:23,328 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:32:23,694 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:32:23,887 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-10-11 02:32:24,072 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-10-11 02:32:24,289 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2021-10-11 02:32:24,646 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-10-11 02:32:24,651 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:24,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:32:24,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-11 02:32:24,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082413722] [2021-10-11 02:32:24,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-10-11 02:32:24,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:24,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-11 02:32:24,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-10-11 02:32:24,653 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 13 states. [2021-10-11 02:32:25,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:25,492 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-10-11 02:32:25,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-11 02:32:25,492 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 9 [2021-10-11 02:32:25,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:25,493 INFO L225 Difference]: With dead ends: 34 [2021-10-11 02:32:25,493 INFO L226 Difference]: Without dead ends: 32 [2021-10-11 02:32:25,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2021-10-11 02:32:25,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-11 02:32:25,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 14. [2021-10-11 02:32:25,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:32:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-10-11 02:32:25,499 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2021-10-11 02:32:25,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:25,500 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-10-11 02:32:25,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-10-11 02:32:25,500 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-10-11 02:32:25,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:32:25,500 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:25,500 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:25,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:25,716 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:25,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:25,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2017138118, now seen corresponding path program 1 times [2021-10-11 02:32:25,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:25,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834469881] [2021-10-11 02:32:25,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:25,728 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:32:25,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771643684] [2021-10-11 02:32:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI/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 02:32:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:25,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:32:25,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:25,879 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 02:32:25,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:25,915 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 02:32:25,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834469881] [2021-10-11 02:32:25,916 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:25,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771643684] [2021-10-11 02:32:25,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:25,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-10-11 02:32:25,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381843724] [2021-10-11 02:32:25,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:32:25,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:25,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:32:25,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:32:25,919 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 8 states. [2021-10-11 02:32:25,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:25,998 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-10-11 02:32:25,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:32:25,999 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2021-10-11 02:32:25,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:26,000 INFO L225 Difference]: With dead ends: 24 [2021-10-11 02:32:26,000 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:32:26,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:32:26,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:32:26,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-11 02:32:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:32:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-11 02:32:26,009 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2021-10-11 02:32:26,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:26,009 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-11 02:32:26,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:32:26,009 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-11 02:32:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:32:26,010 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:26,010 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:26,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-11 02:32:26,235 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:26,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:26,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1602887149, now seen corresponding path program 1 times [2021-10-11 02:32:26,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:26,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809500758] [2021-10-11 02:32:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:26,248 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:32:26,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832111989] [2021-10-11 02:32:26,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI/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 02:32:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:26,343 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:26,367 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:26,416 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:32:26,416 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:32:26,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:26,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:26 BoogieIcfgContainer [2021-10-11 02:32:26,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:26,661 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:26,661 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:26,661 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:26,661 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:17" (3/4) ... [2021-10-11 02:32:26,663 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:32:26,728 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfb6aba2-c269-4c18-b3af-e5900cc70e18/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:32:26,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:26,729 INFO L168 Benchmark]: Toolchain (without parser) took 10488.34 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 75.9 MB in the beginning and 67.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:26,733 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 51.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:26,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.85 ms. Allocated memory is still 104.9 MB. Free memory was 75.5 MB in the beginning and 80.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:26,734 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.56 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 78.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:26,734 INFO L168 Benchmark]: Boogie Preprocessor took 45.34 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 77.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:26,735 INFO L168 Benchmark]: RCFGBuilder took 520.90 ms. Allocated memory is still 104.9 MB. Free memory was 77.5 MB in the beginning and 55.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:26,735 INFO L168 Benchmark]: TraceAbstraction took 9479.88 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 54.8 MB in the beginning and 70.1 MB in the end (delta: -15.4 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:26,735 INFO L168 Benchmark]: Witness Printer took 67.62 ms. Allocated memory is still 125.8 MB. Free memory was 70.1 MB in the beginning and 67.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:26,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 51.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.85 ms. Allocated memory is still 104.9 MB. Free memory was 75.5 MB in the beginning and 80.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.56 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 78.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.34 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 77.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 520.90 ms. Allocated memory is still 104.9 MB. Free memory was 77.5 MB in the beginning and 55.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9479.88 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 54.8 MB in the beginning and 70.1 MB in the end (delta: -15.4 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Witness Printer took 67.62 ms. Allocated memory is still 125.8 MB. Free memory was 70.1 MB in the beginning and 67.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 8 [L32] b[0] = 1 [L34] i=1 VAL [N=2] [L34] COND TRUE i