./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW --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 6604dbb2462dfab53c0d37d83d08add09bc53abffb53773fd7099f9e7acddff3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:59:26,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:59:26,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:59:26,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:59:26,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:59:26,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:59:26,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:59:26,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:59:26,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:59:26,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:59:26,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:59:26,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:59:26,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:59:26,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:59:26,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:59:26,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:59:26,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:59:26,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:59:26,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:59:26,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:59:26,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:59:26,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:59:26,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:59:26,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:59:26,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:59:26,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:59:26,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:59:26,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:59:26,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:59:26,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:59:26,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:59:26,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:59:26,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:59:26,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:59:26,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:59:26,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:59:26,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:59:26,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:59:26,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:59:26,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:59:26,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:59:26,663 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:59:26,685 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:59:26,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:59:26,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:59:26,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:59:26,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:59:26,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:59:26,687 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:59:26,687 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:59:26,688 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:59:26,688 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:59:26,688 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:59:26,688 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:59:26,688 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:59:26,689 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:59:26,689 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:59:26,689 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:59:26,689 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:59:26,689 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:59:26,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:59:26,690 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:59:26,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:59:26,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:59:26,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:59:26,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:59:26,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:59:26,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:59:26,692 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:59:26,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:59:26,692 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:59:26,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:59:26,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:59:26,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:59:26,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:59:26,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:59:26,694 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:59:26,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:59:26,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:59:26,694 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:59:26,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:59:26,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:59:26,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:59:26,695 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_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6604dbb2462dfab53c0d37d83d08add09bc53abffb53773fd7099f9e7acddff3 [2022-11-23 14:59:27,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:59:27,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:59:27,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:59:27,059 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:59:27,059 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:59:27,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2022-11-23 14:59:30,131 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:59:30,415 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:59:30,416 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2022-11-23 14:59:30,427 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/data/a21cd613b/23ee88a6fb8244ea971d6816cbe98db7/FLAGa79fea1ea [2022-11-23 14:59:30,449 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/data/a21cd613b/23ee88a6fb8244ea971d6816cbe98db7 [2022-11-23 14:59:30,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:59:30,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:59:30,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:59:30,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:59:30,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:59:30,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:59:30" (1/1) ... [2022-11-23 14:59:30,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b63c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:30, skipping insertion in model container [2022-11-23 14:59:30,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:59:30" (1/1) ... [2022-11-23 14:59:30,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:59:30,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:59:30,778 WARN L237 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_7e3cac3a-5947-4d10-bab2-fc765e385a5d/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2022-11-23 14:59:30,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:59:30,822 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:59:30,844 WARN L237 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_7e3cac3a-5947-4d10-bab2-fc765e385a5d/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2022-11-23 14:59:30,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:59:30,880 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:59:30,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:30 WrapperNode [2022-11-23 14:59:30,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:59:30,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:59:30,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:59:30,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:59:30,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:30" (1/1) ... [2022-11-23 14:59:30,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:30" (1/1) ... [2022-11-23 14:59:30,920 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2022-11-23 14:59:30,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:59:30,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:59:30,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:59:30,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:59:30,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:30" (1/1) ... [2022-11-23 14:59:30,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:30" (1/1) ... [2022-11-23 14:59:30,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:30" (1/1) ... [2022-11-23 14:59:30,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:30" (1/1) ... [2022-11-23 14:59:30,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:30" (1/1) ... [2022-11-23 14:59:30,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:30" (1/1) ... [2022-11-23 14:59:30,976 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:30" (1/1) ... [2022-11-23 14:59:30,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:30" (1/1) ... [2022-11-23 14:59:30,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:59:30,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:59:30,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:59:30,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:59:30,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:30" (1/1) ... [2022-11-23 14:59:30,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:59:31,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:31,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:59:31,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:59:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:59:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 14:59:31,066 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 14:59:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:59:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:59:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:59:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:59:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:59:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:59:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 14:59:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 14:59:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:59:31,145 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:59:31,148 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:59:31,315 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:59:31,351 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:59:31,351 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 14:59:31,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:31 BoogieIcfgContainer [2022-11-23 14:59:31,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:59:31,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:59:31,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:59:31,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:59:31,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:59:30" (1/3) ... [2022-11-23 14:59:31,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38199784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:59:31, skipping insertion in model container [2022-11-23 14:59:31,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:30" (2/3) ... [2022-11-23 14:59:31,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38199784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:59:31, skipping insertion in model container [2022-11-23 14:59:31,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:31" (3/3) ... [2022-11-23 14:59:31,365 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2022-11-23 14:59:31,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:59:31,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:59:31,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:59:31,448 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@335f0291, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:59:31,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:59:31,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 17 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 14:59:31,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 14:59:31,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:31,462 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:59:31,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:31,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:31,469 INFO L85 PathProgramCache]: Analyzing trace with hash -793010551, now seen corresponding path program 1 times [2022-11-23 14:59:31,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:31,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845213281] [2022-11-23 14:59:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:31,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:59:31,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:31,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845213281] [2022-11-23 14:59:31,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845213281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:31,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:59:31,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:59:31,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638201687] [2022-11-23 14:59:31,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:31,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:59:31,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:31,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:59:31,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:59:31,878 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 17 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:59:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:31,934 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2022-11-23 14:59:31,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:59:31,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2022-11-23 14:59:31,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:31,947 INFO L225 Difference]: With dead ends: 47 [2022-11-23 14:59:31,947 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 14:59:31,950 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:59:31,966 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:31,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:59:31,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 14:59:32,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-23 14:59:32,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 14:59:32,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-11-23 14:59:32,012 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 14 [2022-11-23 14:59:32,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:32,013 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-11-23 14:59:32,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:59:32,014 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-11-23 14:59:32,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 14:59:32,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:32,016 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:59:32,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:59:32,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:32,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:32,018 INFO L85 PathProgramCache]: Analyzing trace with hash -2051718140, now seen corresponding path program 1 times [2022-11-23 14:59:32,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:32,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470074297] [2022-11-23 14:59:32,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:32,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:59:32,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:32,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470074297] [2022-11-23 14:59:32,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470074297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:59:32,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107156271] [2022-11-23 14:59:32,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:32,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:32,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:32,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:32,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:59:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:32,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 14:59:32,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:32,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:59:32,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:59:32,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107156271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:32,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:59:32,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2022-11-23 14:59:32,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321848074] [2022-11-23 14:59:32,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:32,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:59:32,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:32,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:59:32,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:59:32,722 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:59:32,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:32,849 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-11-23 14:59:32,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:59:32,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2022-11-23 14:59:32,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:32,851 INFO L225 Difference]: With dead ends: 32 [2022-11-23 14:59:32,851 INFO L226 Difference]: Without dead ends: 30 [2022-11-23 14:59:32,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:59:32,853 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:32,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 55 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:59:32,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-23 14:59:32,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2022-11-23 14:59:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 14:59:32,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-11-23 14:59:32,865 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 15 [2022-11-23 14:59:32,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:32,866 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-11-23 14:59:32,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:59:32,867 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-11-23 14:59:32,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:59:32,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:32,870 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:59:32,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:59:33,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:33,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:33,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:33,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2009796492, now seen corresponding path program 1 times [2022-11-23 14:59:33,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:33,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332763434] [2022-11-23 14:59:33,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:33,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:59:33,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:33,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332763434] [2022-11-23 14:59:33,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332763434] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:59:33,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107356515] [2022-11-23 14:59:33,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:33,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:33,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:33,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:33,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:59:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:33,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:59:33,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:33,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:59:33,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:59:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:59:33,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107356515] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:59:33,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1069989792] [2022-11-23 14:59:33,481 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-23 14:59:33,481 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:59:33,486 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:59:33,492 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:59:33,492 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:59:33,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:33,578 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:59:33,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-23 14:59:33,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:33,611 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:59:33,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:59:33,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:33,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 51 [2022-11-23 14:59:33,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:33,759 INFO L321 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2022-11-23 14:59:33,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 195 [2022-11-23 14:59:33,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-11-23 14:59:34,308 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 31 for LOIs [2022-11-23 14:59:34,322 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:59:35,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1069989792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:59:35,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:59:35,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 3, 4] total 14 [2022-11-23 14:59:35,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476592849] [2022-11-23 14:59:35,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:59:35,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:59:35,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:35,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:59:35,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:59:35,014 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:59:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:35,168 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-11-23 14:59:35,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:59:35,170 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-11-23 14:59:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:35,171 INFO L225 Difference]: With dead ends: 44 [2022-11-23 14:59:35,171 INFO L226 Difference]: Without dead ends: 34 [2022-11-23 14:59:35,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:59:35,173 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:35,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 60 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:59:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-23 14:59:35,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-23 14:59:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 14:59:35,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-23 14:59:35,191 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 17 [2022-11-23 14:59:35,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:35,192 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-23 14:59:35,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:59:35,192 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-23 14:59:35,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 14:59:35,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:35,195 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:59:35,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:59:35,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-23 14:59:35,402 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:35,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:35,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2040663439, now seen corresponding path program 1 times [2022-11-23 14:59:35,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:35,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828119060] [2022-11-23 14:59:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:35,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 14:59:35,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:35,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828119060] [2022-11-23 14:59:35,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828119060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:59:35,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611744697] [2022-11-23 14:59:35,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:35,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:35,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:35,655 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:35,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:59:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:35,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:59:35,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:59:35,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:59:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 14:59:35,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611744697] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:59:35,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1894552814] [2022-11-23 14:59:35,813 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-23 14:59:35,813 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:59:35,814 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:59:35,814 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:59:35,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:59:35,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:35,845 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:59:35,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-23 14:59:35,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:35,874 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:59:35,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:59:35,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:35,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:59:35,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:35,965 INFO L321 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2022-11-23 14:59:35,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 194 treesize of output 188 [2022-11-23 14:59:36,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-11-23 14:59:38,218 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-23 14:59:38,223 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 25 for LOIs [2022-11-23 14:59:38,231 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:59:40,900 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '660#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:59:40,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:59:40,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:59:40,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2022-11-23 14:59:40,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163662873] [2022-11-23 14:59:40,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:59:40,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:59:40,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:40,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:59:40,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:59:40,905 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-23 14:59:40,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:59:40,969 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2022-11-23 14:59:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:59:40,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 28 [2022-11-23 14:59:40,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:59:40,974 INFO L225 Difference]: With dead ends: 66 [2022-11-23 14:59:40,975 INFO L226 Difference]: Without dead ends: 36 [2022-11-23 14:59:40,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-11-23 14:59:40,980 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:59:40,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:59:40,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-23 14:59:41,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-23 14:59:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-23 14:59:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-11-23 14:59:41,007 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 28 [2022-11-23 14:59:41,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:59:41,008 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-11-23 14:59:41,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-23 14:59:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-11-23 14:59:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-23 14:59:41,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:59:41,010 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:59:41,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 14:59:41,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:41,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:59:41,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:59:41,213 INFO L85 PathProgramCache]: Analyzing trace with hash 187271500, now seen corresponding path program 2 times [2022-11-23 14:59:41,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:59:41,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136959549] [2022-11-23 14:59:41,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:41,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:59:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 14:59:41,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:41,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136959549] [2022-11-23 14:59:41,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136959549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:59:41,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159877210] [2022-11-23 14:59:41,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:59:41,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:41,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:41,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:41,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:59:41,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 14:59:41,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:59:41,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-23 14:59:41,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:42,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:42,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:59:42,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:42,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:59:42,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:42,250 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:59:42,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 58 [2022-11-23 14:59:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 14:59:42,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:59:50,291 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:59:50,644 INFO L321 Elim1Store]: treesize reduction 171, result has 21.2 percent of original size [2022-11-23 14:59:50,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 336 treesize of output 189 [2022-11-23 14:59:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:59:51,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159877210] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:59:51,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1025635486] [2022-11-23 14:59:51,300 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-23 14:59:51,301 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:59:51,301 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:59:51,301 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:59:51,301 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:59:51,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:51,339 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:59:51,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-23 14:59:51,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:51,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-23 14:59:51,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:51,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 51 [2022-11-23 14:59:51,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:51,436 INFO L321 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2022-11-23 14:59:51,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 195 [2022-11-23 14:59:51,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-11-23 14:59:52,251 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 68 for LOIs [2022-11-23 14:59:52,338 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-11-23 14:59:52,339 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:59:58,842 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1040#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-23 14:59:58,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:59:58,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:59:58,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 12] total 29 [2022-11-23 14:59:58,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088076987] [2022-11-23 14:59:58,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:59:58,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-23 14:59:58,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:59:58,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-23 14:59:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1848, Unknown=0, NotChecked=0, Total=2070 [2022-11-23 14:59:58,849 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 29 states, 22 states have (on average 2.409090909090909) internal successors, (53), 24 states have internal predecessors, (53), 8 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-23 15:00:01,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:00:01,754 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2022-11-23 15:00:01,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 15:00:01,758 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 22 states have (on average 2.409090909090909) internal successors, (53), 24 states have internal predecessors, (53), 8 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 31 [2022-11-23 15:00:01,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:00:01,758 INFO L225 Difference]: With dead ends: 71 [2022-11-23 15:00:01,758 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:00:01,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=393, Invalid=3389, Unknown=0, NotChecked=0, Total=3782 [2022-11-23 15:00:01,761 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 31 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:00:01,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 76 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 15:00:01,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:00:01,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:00:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-23 15:00:01,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:00:01,762 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2022-11-23 15:00:01,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:00:01,762 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:00:01,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 22 states have (on average 2.409090909090909) internal successors, (53), 24 states have internal predecessors, (53), 8 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-23 15:00:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:00:01,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:00:01,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:00:01,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:00:01,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:00:01,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:00:03,576 INFO L895 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~loop_entered~0#1| 0)) (.cse1 (<= |#NULL.offset| 0)) (.cse2 (<= 0 |ULTIMATE.start_main_~#array~0#1.base|)) (.cse3 (= |ULTIMATE.start_main_~#array~0#1.offset| 0)) (.cse4 (<= 0 |#NULL.offset|)) (.cse5 (<= 0 |#StackHeapBarrier|)) (.cse6 (<= 0 |ULTIMATE.start_main_~loop_entered~0#1|)) (.cse7 (= |#NULL.base| 0))) (or (and .cse0 .cse1 (<= 0 |ULTIMATE.start_main_~i~0#1|) (< (mod (+ 4294967295 |ULTIMATE.start_main_~i~0#1|) 4294967296) 100000) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7))) [2022-11-23 15:00:03,576 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 15:00:03,576 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 63) no Hoare annotation was computed. [2022-11-23 15:00:03,576 INFO L895 garLoopResultBuilder]: At program point L49-1(lines 47 55) the Hoare annotation is: (let ((.cse3 (< (mod (+ 4294967295 |ULTIMATE.start_main_~i~0#1|) 4294967296) 100000)) (.cse4 (= |ULTIMATE.start_main_~#array~0#1.offset| 0))) (or (let ((.cse1 (mod (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296)) (.cse0 (mod (+ |ULTIMATE.start_main_~index1~0#1| 4294967295) 4294967296))) (and (< .cse0 .cse1) (< .cse1 100000) (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|))) (= (mod (select .cse2 (+ (* 4 .cse1) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296) (mod (select .cse2 (+ (* .cse0 4) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296))) .cse3 .cse4)) (and (<= |ULTIMATE.start_main_~loop_entered~0#1| 0) (not (= (ite (< (mod |ULTIMATE.start_main_~index1~0#1| 4294967296) 100000) 1 0) 0)) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) .cse3 (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) .cse4 (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 100000 (mod |ULTIMATE.start_main_~i~0#1| 4294967296)) (<= 0 |ULTIMATE.start_main_~loop_entered~0#1|) (not (= (ite (< (mod |ULTIMATE.start_main_~index2~0#1| 4294967296) 100000) 1 0) 0)) (= |#NULL.base| 0)))) [2022-11-23 15:00:03,576 INFO L899 garLoopResultBuilder]: For program point L49-2(lines 34 65) no Hoare annotation was computed. [2022-11-23 15:00:03,577 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~loop_entered~0#1| 0) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (< (mod (+ 4294967295 |ULTIMATE.start_main_~i~0#1|) 4294967296) 100000) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 100000 (mod |ULTIMATE.start_main_~i~0#1| 4294967296)) (<= 0 |ULTIMATE.start_main_~loop_entered~0#1|) (= |#NULL.base| 0)) [2022-11-23 15:00:03,577 INFO L899 garLoopResultBuilder]: For program point L45-1(line 45) no Hoare annotation was computed. [2022-11-23 15:00:03,577 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:00:03,577 INFO L895 garLoopResultBuilder]: At program point L58-2(lines 58 62) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|)) (.cse3 (< (mod (+ 4294967295 |ULTIMATE.start_main_~i~0#1|) 4294967296) 100000)) (.cse4 (= |ULTIMATE.start_main_~#array~0#1.offset| 0))) (or (let ((.cse1 (mod |ULTIMATE.start_main_~index1~0#1| 4294967296)) (.cse2 (mod |ULTIMATE.start_main_~index2~0#1| 4294967296))) (and (= (mod (select .cse0 (+ |ULTIMATE.start_main_~#array~0#1.offset| (* .cse1 4))) 4294967296) (mod (select .cse0 (+ |ULTIMATE.start_main_~#array~0#1.offset| (* .cse2 4))) 4294967296)) (< .cse2 100000) (< .cse1 .cse2) .cse3 .cse4)) (let ((.cse6 (mod (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296)) (.cse5 (mod (+ |ULTIMATE.start_main_~index1~0#1| 4294967295) 4294967296))) (and (< .cse5 .cse6) (< .cse6 100000) (= (mod (select .cse0 (+ (* 4 .cse6) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296) (mod (select .cse0 (+ (* .cse5 4) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296)) .cse3 .cse4)))) [2022-11-23 15:00:03,577 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse3 (mod |ULTIMATE.start_main_~index2~0#1| 4294967296))) (let ((.cse0 (< (mod |ULTIMATE.start_main_~index1~0#1| 4294967296) .cse3)) (.cse1 (< (mod (+ 4294967295 |ULTIMATE.start_main_~i~0#1|) 4294967296) 100000)) (.cse2 (= |ULTIMATE.start_main_~#array~0#1.offset| 0))) (or (and (<= |ULTIMATE.start_main_~loop_entered~0#1| 0) .cse0 (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) .cse1 (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) .cse2 (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 100000 (mod |ULTIMATE.start_main_~i~0#1| 4294967296)) (<= 0 |ULTIMATE.start_main_~loop_entered~0#1|) (not (= (ite (< .cse3 100000) 1 0) 0)) (= |#NULL.base| 0)) (let ((.cse5 (mod (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296)) (.cse4 (mod (+ |ULTIMATE.start_main_~index1~0#1| 4294967295) 4294967296))) (and (< .cse4 .cse5) (< .cse5 100000) (let ((.cse6 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|))) (= (mod (select .cse6 (+ (* 4 .cse5) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296) (mod (select .cse6 (+ (* .cse4 4) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296))) .cse0 .cse1 .cse2))))) [2022-11-23 15:00:03,578 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2022-11-23 15:00:03,578 INFO L895 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (let ((.cse1 (mod (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296)) (.cse0 (mod (+ |ULTIMATE.start_main_~index1~0#1| 4294967295) 4294967296))) (and (< .cse0 .cse1) (< .cse1 100000) (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|))) (= (mod (select .cse2 (+ (* 4 .cse1) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296) (mod (select .cse2 (+ (* .cse0 4) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296))) (= 0 (mod (+ (* |ULTIMATE.start_main_#t~mem9#1| 4294967295) |ULTIMATE.start_main_#t~mem10#1|) 4294967296)) (< (mod (+ 4294967295 |ULTIMATE.start_main_~i~0#1|) 4294967296) 100000) (= |ULTIMATE.start_main_~#array~0#1.offset| 0))) [2022-11-23 15:00:03,578 INFO L899 garLoopResultBuilder]: For program point L59-1(line 59) no Hoare annotation was computed. [2022-11-23 15:00:03,578 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse8 (select |#memory_int| |ULTIMATE.start_main_~#array~0#1.base|)) (.cse9 (mod |ULTIMATE.start_main_~index1~0#1| 4294967296)) (.cse5 (mod |ULTIMATE.start_main_~index2~0#1| 4294967296))) (let ((.cse0 (< .cse9 .cse5)) (.cse1 (< (mod (+ 4294967295 |ULTIMATE.start_main_~i~0#1|) 4294967296) 100000)) (.cse2 (= (select .cse8 (+ |ULTIMATE.start_main_~#array~0#1.offset| (* .cse5 4))) |ULTIMATE.start_main_#t~mem6#1|)) (.cse3 (= |ULTIMATE.start_main_~#array~0#1.offset| 0)) (.cse4 (= |ULTIMATE.start_main_#t~mem5#1| (select .cse8 (+ |ULTIMATE.start_main_~#array~0#1.offset| (* .cse9 4)))))) (or (and (<= |ULTIMATE.start_main_~loop_entered~0#1| 0) .cse0 (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) .cse1 (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) .cse2 .cse3 .cse4 (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 100000 (mod |ULTIMATE.start_main_~i~0#1| 4294967296)) (<= 0 |ULTIMATE.start_main_~loop_entered~0#1|) (not (= (ite (< .cse5 100000) 1 0) 0)) (= |#NULL.base| 0)) (let ((.cse7 (mod (+ |ULTIMATE.start_main_~index2~0#1| 1) 4294967296)) (.cse6 (mod (+ |ULTIMATE.start_main_~index1~0#1| 4294967295) 4294967296))) (and (< .cse6 .cse7) (< .cse7 100000) (= (mod (select .cse8 (+ (* 4 .cse7) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296) (mod (select .cse8 (+ (* .cse6 4) |ULTIMATE.start_main_~#array~0#1.offset|)) 4294967296)) .cse0 .cse1 .cse2 .cse3 .cse4))))) [2022-11-23 15:00:03,578 INFO L899 garLoopResultBuilder]: For program point L51-1(line 51) no Hoare annotation was computed. [2022-11-23 15:00:03,578 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (and (= |ULTIMATE.start_main_~loop_entered~0#1| 0) (not (= (ite (< (mod |ULTIMATE.start_main_~index1~0#1| 4294967296) 100000) 1 0) 0)) (<= 0 |ULTIMATE.start_main_~i~0#1|) (< (mod (+ 4294967295 |ULTIMATE.start_main_~i~0#1|) 4294967296) 100000) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100000 (mod |ULTIMATE.start_main_~i~0#1| 4294967296)) (= |#NULL.base| 0)) [2022-11-23 15:00:03,579 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 20 22) the Hoare annotation is: true [2022-11-23 15:00:03,579 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 20 22) no Hoare annotation was computed. [2022-11-23 15:00:03,579 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 23 29) the Hoare annotation is: true [2022-11-23 15:00:03,579 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-23 15:00:03,579 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 23 29) no Hoare annotation was computed. [2022-11-23 15:00:03,579 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 27) no Hoare annotation was computed. [2022-11-23 15:00:03,579 INFO L899 garLoopResultBuilder]: For program point L25-2(lines 23 29) no Hoare annotation was computed. [2022-11-23 15:00:03,579 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2022-11-23 15:00:03,582 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-11-23 15:00:03,584 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:00:03,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:00:03 BoogieIcfgContainer [2022-11-23 15:00:03,614 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:00:03,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:00:03,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:00:03,615 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:00:03,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:31" (3/4) ... [2022-11-23 15:00:03,619 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:00:03,624 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-23 15:00:03,624 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-23 15:00:03,628 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-23 15:00:03,631 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-23 15:00:03,632 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 15:00:03,632 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:00:03,684 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:00:03,685 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:00:03,685 INFO L158 Benchmark]: Toolchain (without parser) took 33226.32ms. Allocated memory was 174.1MB in the beginning and 302.0MB in the end (delta: 127.9MB). Free memory was 139.7MB in the beginning and 222.6MB in the end (delta: -82.9MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2022-11-23 15:00:03,686 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 125.8MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:00:03,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.73ms. Allocated memory is still 174.1MB. Free memory was 139.7MB in the beginning and 139.4MB in the end (delta: 277.1kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 15:00:03,687 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.10ms. Allocated memory is still 174.1MB. Free memory was 139.4MB in the beginning and 138.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:00:03,687 INFO L158 Benchmark]: Boogie Preprocessor took 62.89ms. Allocated memory is still 174.1MB. Free memory was 138.2MB in the beginning and 136.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:00:03,688 INFO L158 Benchmark]: RCFGBuilder took 371.51ms. Allocated memory is still 174.1MB. Free memory was 136.1MB in the beginning and 122.7MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 15:00:03,691 INFO L158 Benchmark]: TraceAbstraction took 32255.66ms. Allocated memory was 174.1MB in the beginning and 302.0MB in the end (delta: 127.9MB). Free memory was 122.7MB in the beginning and 225.7MB in the end (delta: -103.1MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2022-11-23 15:00:03,693 INFO L158 Benchmark]: Witness Printer took 70.01ms. Allocated memory is still 302.0MB. Free memory was 225.7MB in the beginning and 222.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:00:03,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 125.8MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 418.73ms. Allocated memory is still 174.1MB. Free memory was 139.7MB in the beginning and 139.4MB in the end (delta: 277.1kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.10ms. Allocated memory is still 174.1MB. Free memory was 139.4MB in the beginning and 138.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.89ms. Allocated memory is still 174.1MB. Free memory was 138.2MB in the beginning and 136.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 371.51ms. Allocated memory is still 174.1MB. Free memory was 136.1MB in the beginning and 122.7MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 32255.66ms. Allocated memory was 174.1MB in the beginning and 302.0MB in the end (delta: 127.9MB). Free memory was 122.7MB in the beginning and 225.7MB in the end (delta: -103.1MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. * Witness Printer took 70.01ms. Allocated memory is still 302.0MB. Free memory was 225.7MB in the beginning and 222.6MB in the end (delta: 3.1MB). 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 - PositiveResult [Line: 26]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.2s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51 mSDsluCounter, 347 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 259 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 577 IncrementalHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 88 mSDtfsCounter, 577 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 168 SyntacticMatches, 6 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 19.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 35 PreInvPairs, 51 NumberOfFragments, 758 HoareAnnotationTreeSize, 35 FomulaSimplifications, 77 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 252 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 196 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 260 ConstructedInterpolants, 1 QuantifiedInterpolants, 2256 SizeOfPredicates, 19 NumberOfNonLiveVariables, 371 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 81/104 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: OVERALL_TIME: 0.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 11, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 10, TOOLS_POST_TIME: 0.3s, TOOLS_POST_CALL_APPLICATIONS: 6, TOOLS_POST_CALL_TIME: 0.3s, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 20, TOOLS_QUANTIFIERELIM_TIME: 0.7s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 36, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 11, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.2s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 117, DAG_COMPRESSION_RETAINED_NODES: 37, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((loop_entered <= 0 && #NULL <= 0) && 0 <= i) && (4294967295 + i) % 4294967296 < 100000) && 0 <= array) && array == 0) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= loop_entered) && #NULL == 0) || ((((((((i == 0 && loop_entered <= 0) && #NULL <= 0) && 0 <= array) && array == 0) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= loop_entered) && #NULL == 0) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((((index1 + 4294967295) % 4294967296 < (index2 + 1) % 4294967296 && (index2 + 1) % 4294967296 < 100000) && unknown-#memory_int-unknown[array][4 * ((index2 + 1) % 4294967296) + array] % 4294967296 == unknown-#memory_int-unknown[array][(index1 + 4294967295) % 4294967296 * 4 + array] % 4294967296) && (4294967295 + i) % 4294967296 < 100000) && array == 0) || ((((((((((((loop_entered <= 0 && !((if index1 % 4294967296 < 100000 then 1 else 0) == 0)) && #NULL <= 0) && 0 <= i) && (4294967295 + i) % 4294967296 < 100000) && 0 <= array) && array == 0) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) && 100000 <= i % 4294967296) && 0 <= loop_entered) && !((if index2 % 4294967296 < 100000 then 1 else 0) == 0)) && #NULL == 0) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: ((((unknown-#memory_int-unknown[array][array + index1 % 4294967296 * 4] % 4294967296 == unknown-#memory_int-unknown[array][array + index2 % 4294967296 * 4] % 4294967296 && index2 % 4294967296 < 100000) && index1 % 4294967296 < index2 % 4294967296) && (4294967295 + i) % 4294967296 < 100000) && array == 0) || (((((index1 + 4294967295) % 4294967296 < (index2 + 1) % 4294967296 && (index2 + 1) % 4294967296 < 100000) && unknown-#memory_int-unknown[array][4 * ((index2 + 1) % 4294967296) + array] % 4294967296 == unknown-#memory_int-unknown[array][(index1 + 4294967295) % 4294967296 * 4 + array] % 4294967296) && (4294967295 + i) % 4294967296 < 100000) && array == 0) RESULT: Ultimate proved your program to be correct! [2022-11-23 15:00:03,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3cac3a-5947-4d10-bab2-fc765e385a5d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE