./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum04-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum04-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 363837b614bad810335bbe0c369ca77c24cc87938da6245b414371c201391312 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:22:56,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:22:56,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:22:56,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:22:56,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:22:56,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:22:56,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:22:56,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:22:56,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:22:56,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:22:56,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:22:56,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:22:56,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:22:56,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:22:56,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:22:56,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:22:56,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:22:56,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:22:56,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:22:56,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:22:56,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:22:56,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:22:56,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:22:56,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:22:56,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:22:56,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:22:56,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:22:56,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:22:56,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:22:56,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:22:56,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:22:56,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:22:56,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:22:56,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:22:56,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:22:56,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:22:56,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:22:56,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:22:56,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:22:56,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:22:56,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:22:56,498 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:22:56,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:22:56,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:22:56,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:22:56,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:22:56,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:22:56,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:22:56,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:22:56,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:22:56,517 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:22:56,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:22:56,518 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:22:56,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:22:56,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:22:56,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:22:56,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:22:56,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:22:56,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:22:56,519 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:22:56,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:22:56,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:22:56,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:22:56,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:22:56,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:22:56,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:22:56,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:22:56,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:22:56,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:22:56,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:22:56,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:22:56,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:22:56,521 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:22:56,521 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:22:56,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:22:56,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:22:56,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 363837b614bad810335bbe0c369ca77c24cc87938da6245b414371c201391312 [2021-12-06 18:22:56,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:22:56,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:22:56,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:22:56,712 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:22:56,712 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:22:56,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loops/sum04-1.i [2021-12-06 18:22:56,761 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/data/937e21069/4911f06a5b5f4a38bce1863a755b0d25/FLAGabb9d6203 [2021-12-06 18:22:57,106 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:22:57,107 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/sv-benchmarks/c/loops/sum04-1.i [2021-12-06 18:22:57,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/data/937e21069/4911f06a5b5f4a38bce1863a755b0d25/FLAGabb9d6203 [2021-12-06 18:22:57,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/data/937e21069/4911f06a5b5f4a38bce1863a755b0d25 [2021-12-06 18:22:57,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:22:57,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:22:57,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:22:57,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:22:57,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:22:57,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:22:57" (1/1) ... [2021-12-06 18:22:57,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e9ddcab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:57, skipping insertion in model container [2021-12-06 18:22:57,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:22:57" (1/1) ... [2021-12-06 18:22:57,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:22:57,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:22:57,667 WARN L230 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_526a900c-ebce-4670-a25f-f251d0277ab4/sv-benchmarks/c/loops/sum04-1.i[808,821] [2021-12-06 18:22:57,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:22:57,679 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:22:57,688 WARN L230 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_526a900c-ebce-4670-a25f-f251d0277ab4/sv-benchmarks/c/loops/sum04-1.i[808,821] [2021-12-06 18:22:57,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:22:57,698 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:22:57,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:57 WrapperNode [2021-12-06 18:22:57,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:22:57,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:22:57,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:22:57,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:22:57,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:57" (1/1) ... [2021-12-06 18:22:57,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:57" (1/1) ... [2021-12-06 18:22:57,720 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2021-12-06 18:22:57,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:22:57,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:22:57,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:22:57,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:22:57,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:57" (1/1) ... [2021-12-06 18:22:57,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:57" (1/1) ... [2021-12-06 18:22:57,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:57" (1/1) ... [2021-12-06 18:22:57,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:57" (1/1) ... [2021-12-06 18:22:57,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:57" (1/1) ... [2021-12-06 18:22:57,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:57" (1/1) ... [2021-12-06 18:22:57,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:57" (1/1) ... [2021-12-06 18:22:57,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:22:57,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:22:57,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:22:57,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:22:57,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:57" (1/1) ... [2021-12-06 18:22:57,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:22:57,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:22:57,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:22:57,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:22:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:22:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:22:57,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:22:57,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:22:57,832 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:22:57,834 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:22:57,904 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:22:57,910 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:22:57,910 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 18:22:57,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:22:57 BoogieIcfgContainer [2021-12-06 18:22:57,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:22:57,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:22:57,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:22:57,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:22:57,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:22:57" (1/3) ... [2021-12-06 18:22:57,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a10bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:22:57, skipping insertion in model container [2021-12-06 18:22:57,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:22:57" (2/3) ... [2021-12-06 18:22:57,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a10bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:22:57, skipping insertion in model container [2021-12-06 18:22:57,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:22:57" (3/3) ... [2021-12-06 18:22:57,921 INFO L111 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2021-12-06 18:22:57,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:22:57,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:22:57,968 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:22:57,975 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:22:57,975 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:22:57,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:57,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 18:22:57,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:57,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 18:22:57,991 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:22:57,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:57,995 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2021-12-06 18:22:58,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:22:58,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249607186] [2021-12-06 18:22:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:58,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:22:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:58,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:58,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:22:58,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249607186] [2021-12-06 18:22:58,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249607186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:58,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:58,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:22:58,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986215816] [2021-12-06 18:22:58,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:58,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:22:58,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:22:58,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:22:58,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:22:58,143 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:58,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:58,154 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-12-06 18:22:58,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:22:58,155 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 18:22:58,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:58,161 INFO L225 Difference]: With dead ends: 21 [2021-12-06 18:22:58,161 INFO L226 Difference]: Without dead ends: 9 [2021-12-06 18:22:58,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:22:58,167 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:58,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:22:58,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-06 18:22:58,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-06 18:22:58,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:58,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-12-06 18:22:58,191 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-12-06 18:22:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:58,191 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-12-06 18:22:58,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-12-06 18:22:58,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 18:22:58,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:58,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 18:22:58,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:22:58,192 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:22:58,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:58,193 INFO L85 PathProgramCache]: Analyzing trace with hash 889610002, now seen corresponding path program 1 times [2021-12-06 18:22:58,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:22:58,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644640763] [2021-12-06 18:22:58,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:58,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:22:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:58,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:22:58,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644640763] [2021-12-06 18:22:58,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644640763] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:58,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:58,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:22:58,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948984651] [2021-12-06 18:22:58,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:58,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:22:58,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:22:58,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:22:58,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:22:58,233 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:58,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:58,247 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2021-12-06 18:22:58,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:22:58,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 18:22:58,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:58,249 INFO L225 Difference]: With dead ends: 19 [2021-12-06 18:22:58,249 INFO L226 Difference]: Without dead ends: 12 [2021-12-06 18:22:58,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:22:58,251 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:58,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:22:58,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-06 18:22:58,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-12-06 18:22:58,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-12-06 18:22:58,254 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2021-12-06 18:22:58,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:58,255 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-12-06 18:22:58,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:58,255 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-12-06 18:22:58,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:22:58,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:58,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:58,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:22:58,256 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:22:58,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:58,256 INFO L85 PathProgramCache]: Analyzing trace with hash -332619814, now seen corresponding path program 1 times [2021-12-06 18:22:58,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:22:58,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663932499] [2021-12-06 18:22:58,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:58,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:22:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:58,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:22:58,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663932499] [2021-12-06 18:22:58,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663932499] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:22:58,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037650942] [2021-12-06 18:22:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:58,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:22:58,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:22:58,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:22:58,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:22:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:58,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:22:58,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:58,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:22:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:58,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037650942] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:22:58,432 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:22:58,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-06 18:22:58,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503688840] [2021-12-06 18:22:58,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:22:58,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:22:58,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:22:58,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:22:58,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:22:58,435 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:58,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:58,465 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2021-12-06 18:22:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:22:58,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 18:22:58,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:58,466 INFO L225 Difference]: With dead ends: 26 [2021-12-06 18:22:58,466 INFO L226 Difference]: Without dead ends: 19 [2021-12-06 18:22:58,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:22:58,468 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:58,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 14 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:22:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-06 18:22:58,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-06 18:22:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-06 18:22:58,474 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-06 18:22:58,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:58,474 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-06 18:22:58,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:58,475 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-06 18:22:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 18:22:58,475 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:58,475 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:58,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:22:58,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:22:58,678 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:22:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:58,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1967544752, now seen corresponding path program 1 times [2021-12-06 18:22:58,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:22:58,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94678566] [2021-12-06 18:22:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:58,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:22:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:58,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:22:58,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94678566] [2021-12-06 18:22:58,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94678566] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:22:58,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910701411] [2021-12-06 18:22:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:58,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:22:58,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:22:58,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:22:58,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:22:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:58,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:22:58,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:58,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:22:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:58,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910701411] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:22:58,949 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:22:58,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-06 18:22:58,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908586550] [2021-12-06 18:22:58,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:22:58,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:22:58,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:22:58,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:22:58,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:22:58,951 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:58,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:58,990 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-12-06 18:22:58,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:22:58,990 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-06 18:22:58,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:58,992 INFO L225 Difference]: With dead ends: 40 [2021-12-06 18:22:58,992 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 18:22:58,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:22:58,994 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:58,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 26 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:22:58,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 18:22:59,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-06 18:22:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-12-06 18:22:59,001 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2021-12-06 18:22:59,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:59,002 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-12-06 18:22:59,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:59,002 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-12-06 18:22:59,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 18:22:59,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:59,003 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:59,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 18:22:59,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-06 18:22:59,210 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:22:59,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:59,213 INFO L85 PathProgramCache]: Analyzing trace with hash -233243184, now seen corresponding path program 2 times [2021-12-06 18:22:59,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:22:59,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340656857] [2021-12-06 18:22:59,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:59,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:22:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:22:59,295 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:22:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:22:59,364 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:22:59,364 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 18:22:59,365 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 18:22:59,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:22:59,370 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2021-12-06 18:22:59,373 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:22:59,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:22:59 BoogieIcfgContainer [2021-12-06 18:22:59,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:22:59,394 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:22:59,394 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:22:59,394 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:22:59,395 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:22:57" (3/4) ... [2021-12-06 18:22:59,396 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 18:22:59,422 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 18:22:59,423 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:22:59,423 INFO L158 Benchmark]: Toolchain (without parser) took 1886.68ms. Allocated memory was 88.1MB in the beginning and 134.2MB in the end (delta: 46.1MB). Free memory was 53.4MB in the beginning and 103.7MB in the end (delta: -50.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:22:59,423 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 88.1MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:22:59,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.39ms. Allocated memory was 88.1MB in the beginning and 134.2MB in the end (delta: 46.1MB). Free memory was 53.3MB in the beginning and 110.5MB in the end (delta: -57.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 18:22:59,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.11ms. Allocated memory is still 134.2MB. Free memory was 110.5MB in the beginning and 109.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:22:59,424 INFO L158 Benchmark]: Boogie Preprocessor took 12.68ms. Allocated memory is still 134.2MB. Free memory was 109.1MB in the beginning and 107.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:22:59,424 INFO L158 Benchmark]: RCFGBuilder took 177.87ms. Allocated memory is still 134.2MB. Free memory was 107.8MB in the beginning and 99.4MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 18:22:59,425 INFO L158 Benchmark]: TraceAbstraction took 1479.80ms. Allocated memory is still 134.2MB. Free memory was 98.6MB in the beginning and 105.8MB in the end (delta: -7.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:22:59,425 INFO L158 Benchmark]: Witness Printer took 28.44ms. Allocated memory is still 134.2MB. Free memory was 105.8MB in the beginning and 103.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:22:59,426 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 88.1MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 161.39ms. Allocated memory was 88.1MB in the beginning and 134.2MB in the end (delta: 46.1MB). Free memory was 53.3MB in the beginning and 110.5MB in the end (delta: -57.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.11ms. Allocated memory is still 134.2MB. Free memory was 110.5MB in the beginning and 109.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.68ms. Allocated memory is still 134.2MB. Free memory was 109.1MB in the beginning and 107.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 177.87ms. Allocated memory is still 134.2MB. Free memory was 107.8MB in the beginning and 99.4MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1479.80ms. Allocated memory is still 134.2MB. Free memory was 98.6MB in the beginning and 105.8MB in the end (delta: -7.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 28.44ms. Allocated memory is still 134.2MB. Free memory was 105.8MB in the beginning and 103.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] int i, sn=0; [L24] i=1 VAL [i=1, sn=0] [L24] COND TRUE i<=8 VAL [i=1, sn=0] [L25] COND TRUE i<4 [L26] sn = sn + (2) VAL [i=1, sn=2] [L24] i++ VAL [i=2, sn=2] [L24] COND TRUE i<=8 VAL [i=2, sn=2] [L25] COND TRUE i<4 [L26] sn = sn + (2) VAL [i=2, sn=4] [L24] i++ VAL [i=3, sn=4] [L24] COND TRUE i<=8 VAL [i=3, sn=4] [L25] COND TRUE i<4 [L26] sn = sn + (2) VAL [i=3, sn=6] [L24] i++ VAL [i=4, sn=6] [L24] COND TRUE i<=8 VAL [i=4, sn=6] [L25] COND FALSE !(i<4) VAL [i=4, sn=6] [L24] i++ VAL [i=5, sn=6] [L24] COND TRUE i<=8 VAL [i=5, sn=6] [L25] COND FALSE !(i<4) VAL [i=5, sn=6] [L24] i++ VAL [i=6, sn=6] [L24] COND TRUE i<=8 VAL [i=6, sn=6] [L25] COND FALSE !(i<4) VAL [i=6, sn=6] [L24] i++ VAL [i=7, sn=6] [L24] COND TRUE i<=8 VAL [i=7, sn=6] [L25] COND FALSE !(i<4) VAL [i=7, sn=6] [L24] i++ VAL [i=8, sn=6] [L24] COND TRUE i<=8 VAL [i=8, sn=6] [L25] COND FALSE !(i<4) VAL [i=8, sn=6] [L24] i++ VAL [i=9, sn=6] [L24] COND FALSE !(i<=8) VAL [i=9, sn=6] [L28] CALL __VERIFIER_assert(sn==8*(2) || sn == 0) [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 33 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, InterpolantAutomatonStates: 21, 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 189 SizeOfPredicates, 0 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/69 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 incorrect! [2021-12-06 18:22:59,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_526a900c-ebce-4670-a25f-f251d0277ab4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE