./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test23-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test23-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI --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 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 --- 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-5e519f3 [2022-11-03 02:24:01,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:24:01,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:24:01,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:24:01,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:24:01,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:24:01,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:24:01,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:24:01,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:24:01,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:24:01,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:24:01,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:24:01,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:24:01,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:24:01,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:24:01,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:24:01,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:24:01,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:24:01,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:24:01,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:24:01,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:24:01,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:24:01,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:24:01,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:24:01,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:24:01,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:24:01,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:24:01,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:24:01,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:24:01,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:24:01,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:24:01,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:24:01,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:24:01,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:24:01,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:24:01,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:24:01,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:24:01,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:24:01,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:24:01,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:24:01,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:24:01,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:24:02,028 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:24:02,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:24:02,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:24:02,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:24:02,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:24:02,030 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:24:02,031 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:24:02,031 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:24:02,031 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:24:02,031 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:24:02,033 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:24:02,033 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:24:02,033 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:24:02,034 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:24:02,034 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:24:02,034 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:24:02,034 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:24:02,035 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:24:02,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:24:02,036 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:24:02,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:24:02,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:24:02,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:24:02,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:24:02,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:24:02,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:24:02,037 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:24:02,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:24:02,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:24:02,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:24:02,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:24:02,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:24:02,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:24:02,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:24:02,040 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:24:02,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:24:02,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:24:02,040 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:24:02,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:24:02,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:24:02,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:24:02,041 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_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 [2022-11-03 02:24:02,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:24:02,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:24:02,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:24:02,406 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:24:02,407 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:24:02,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-regression/test23-2.c [2022-11-03 02:24:02,479 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/data/3e4b4d247/2e3ccc3c2eaf446988120ea5d023a307/FLAGa7a1b2630 [2022-11-03 02:24:03,026 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:24:03,027 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/sv-benchmarks/c/ldv-regression/test23-2.c [2022-11-03 02:24:03,036 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/data/3e4b4d247/2e3ccc3c2eaf446988120ea5d023a307/FLAGa7a1b2630 [2022-11-03 02:24:03,390 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/data/3e4b4d247/2e3ccc3c2eaf446988120ea5d023a307 [2022-11-03 02:24:03,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:24:03,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:24:03,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:24:03,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:24:03,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:24:03,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:24:03" (1/1) ... [2022-11-03 02:24:03,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d4cf03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:03, skipping insertion in model container [2022-11-03 02:24:03,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:24:03" (1/1) ... [2022-11-03 02:24:03,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:24:03,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:24:03,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/sv-benchmarks/c/ldv-regression/test23-2.c[1070,1083] [2022-11-03 02:24:03,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:24:03,669 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:24:03,703 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/sv-benchmarks/c/ldv-regression/test23-2.c[1070,1083] [2022-11-03 02:24:03,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:24:03,727 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:24:03,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:03 WrapperNode [2022-11-03 02:24:03,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:24:03,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:24:03,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:24:03,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:24:03,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:03" (1/1) ... [2022-11-03 02:24:03,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:03" (1/1) ... [2022-11-03 02:24:03,786 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2022-11-03 02:24:03,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:24:03,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:24:03,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:24:03,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:24:03,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:03" (1/1) ... [2022-11-03 02:24:03,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:03" (1/1) ... [2022-11-03 02:24:03,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:03" (1/1) ... [2022-11-03 02:24:03,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:03" (1/1) ... [2022-11-03 02:24:03,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:03" (1/1) ... [2022-11-03 02:24:03,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:03" (1/1) ... [2022-11-03 02:24:03,837 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:03" (1/1) ... [2022-11-03 02:24:03,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:03" (1/1) ... [2022-11-03 02:24:03,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:24:03,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:24:03,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:24:03,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:24:03,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:03" (1/1) ... [2022-11-03 02:24:03,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:24:03,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:03,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:24:03,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:24:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:24:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:24:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:24:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2022-11-03 02:24:03,927 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2022-11-03 02:24:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:24:03,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:24:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:24:04,050 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:24:04,052 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:24:04,316 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:24:04,419 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:24:04,420 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:24:04,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:24:04 BoogieIcfgContainer [2022-11-03 02:24:04,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:24:04,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:24:04,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:24:04,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:24:04,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:24:03" (1/3) ... [2022-11-03 02:24:04,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fda8946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:24:04, skipping insertion in model container [2022-11-03 02:24:04,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:24:03" (2/3) ... [2022-11-03 02:24:04,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fda8946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:24:04, skipping insertion in model container [2022-11-03 02:24:04,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:24:04" (3/3) ... [2022-11-03 02:24:04,433 INFO L112 eAbstractionObserver]: Analyzing ICFG test23-2.c [2022-11-03 02:24:04,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:24:04,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:24:04,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:24:04,565 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;@205fefa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:24:04,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:24:04,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:24:04,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:24:04,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:04,584 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:04,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:04,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:04,594 INFO L85 PathProgramCache]: Analyzing trace with hash 835561940, now seen corresponding path program 1 times [2022-11-03 02:24:04,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:04,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916108781] [2022-11-03 02:24:04,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:04,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:24:04,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:04,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916108781] [2022-11-03 02:24:04,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916108781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:04,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:04,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:24:04,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869269490] [2022-11-03 02:24:04,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:04,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:24:04,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:05,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:24:05,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:24:05,017 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:24:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:05,083 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-11-03 02:24:05,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:24:05,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2022-11-03 02:24:05,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:05,095 INFO L225 Difference]: With dead ends: 24 [2022-11-03 02:24:05,095 INFO L226 Difference]: Without dead ends: 14 [2022-11-03 02:24:05,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:24:05,107 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:05,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:24:05,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-03 02:24:05,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-03 02:24:05,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:24:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-03 02:24:05,158 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 14 [2022-11-03 02:24:05,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:05,160 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-03 02:24:05,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:24:05,161 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-03 02:24:05,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:24:05,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:05,163 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:05,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:24:05,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:05,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:05,165 INFO L85 PathProgramCache]: Analyzing trace with hash 125333704, now seen corresponding path program 1 times [2022-11-03 02:24:05,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:05,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349738721] [2022-11-03 02:24:05,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:05,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:24:05,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:05,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349738721] [2022-11-03 02:24:05,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349738721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:05,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:05,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:24:05,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424205762] [2022-11-03 02:24:05,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:05,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:24:05,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:05,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:24:05,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:24:05,667 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:24:05,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:05,716 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-03 02:24:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:24:05,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2022-11-03 02:24:05,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:05,717 INFO L225 Difference]: With dead ends: 20 [2022-11-03 02:24:05,717 INFO L226 Difference]: Without dead ends: 16 [2022-11-03 02:24:05,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:24:05,719 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:05,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:24:05,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-03 02:24:05,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-03 02:24:05,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:24:05,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-03 02:24:05,725 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 15 [2022-11-03 02:24:05,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:05,726 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-03 02:24:05,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:24:05,726 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-03 02:24:05,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:24:05,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:05,727 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:05,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:24:05,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:05,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:05,729 INFO L85 PathProgramCache]: Analyzing trace with hash 214916579, now seen corresponding path program 1 times [2022-11-03 02:24:05,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:05,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464734789] [2022-11-03 02:24:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:05,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:24:06,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:06,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464734789] [2022-11-03 02:24:06,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464734789] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:24:06,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844395250] [2022-11-03 02:24:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:06,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:06,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:06,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:24:06,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:24:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:06,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:24:06,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:06,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 17 [2022-11-03 02:24:06,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 9 [2022-11-03 02:24:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:24:06,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:24:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:24:06,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844395250] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:24:06,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [182079938] [2022-11-03 02:24:06,818 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-03 02:24:06,819 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:24:06,824 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:24:06,830 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:24:06,830 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:24:06,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:24:06,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2022-11-03 02:24:08,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 23 [2022-11-03 02:24:08,594 INFO L197 IcfgInterpreter]: Interpreting procedure get_dummy with input of size 88 for LOIs [2022-11-03 02:24:08,633 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:24:31,456 WARN L234 SmtUtils]: Spent 16.95s on a formula simplification. DAG size of input: 114 DAG size of output: 98 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:24:40,128 WARN L234 SmtUtils]: Spent 8.60s on a formula simplification. DAG size of input: 114 DAG size of output: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:24:40,643 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '240#(and (<= 4 |ULTIMATE.start_main_~pd2~0#1.base|) (= |~#d2~0.offset| 0) (= |ULTIMATE.start_check_~s1#1.offset| |ULTIMATE.start_check_#in~s1#1.offset|) (= |~#d1~0.base| 4) (<= |ULTIMATE.start_main_~pd2~0#1.offset| 0) (= (ite (= (select (select |#memory_int| |ULTIMATE.start_check_~s1#1.base|) (+ (* 4 |ULTIMATE.start_check_~i#1|) |ULTIMATE.start_check_~s1#1.offset| 8)) |ULTIMATE.start_check_~i#1|) 1 0) |ULTIMATE.start_check_#res#1|) (= 5 |~#d2~0.base|) (= |ULTIMATE.start_check_#in~i#1| |ULTIMATE.start_check_~i#1|) (<= |ULTIMATE.start_main_~pa~0#1.base| 5) (<= |ULTIMATE.start_main_~pd1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~pd2~0#1.offset|) (<= 4 |ULTIMATE.start_main_~pa~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (<= 4 |ULTIMATE.start_main_~pd1~0#1.base|) (= |ULTIMATE.start_check_#in~s1#1.base| |ULTIMATE.start_check_~s1#1.base|) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_check_#in~i#1|) (= |ULTIMATE.start_check_#in~s1#1.base| |ULTIMATE.start_main_~pd2~0#1.base|) (= |ULTIMATE.start_check_#in~s1#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|) (= |~#d1~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~pd1~0#1.offset|) (= 0 |ULTIMATE.start_check_#res#1|) (<= |ULTIMATE.start_main_~pd1~0#1.base| 5) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~pd2~0#1.base| 5) (= |#NULL.base| 0))' at error location [2022-11-03 02:24:40,644 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:24:40,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:24:40,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-11-03 02:24:40,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994934012] [2022-11-03 02:24:40,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:24:40,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:24:40,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:40,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:24:40,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:24:40,647 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:24:40,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:40,780 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-11-03 02:24:40,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:24:40,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-11-03 02:24:40,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:40,783 INFO L225 Difference]: With dead ends: 24 [2022-11-03 02:24:40,783 INFO L226 Difference]: Without dead ends: 20 [2022-11-03 02:24:40,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:24:40,785 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:40,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-11-03 02:24:40,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-03 02:24:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-03 02:24:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:24:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-03 02:24:40,791 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2022-11-03 02:24:40,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:40,791 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-03 02:24:40,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:24:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-03 02:24:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 02:24:40,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:40,793 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:40,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:41,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:41,013 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:41,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:41,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1884006439, now seen corresponding path program 2 times [2022-11-03 02:24:41,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:41,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137253900] [2022-11-03 02:24:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:41,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:24:41,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:41,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137253900] [2022-11-03 02:24:41,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137253900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:24:41,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772790775] [2022-11-03 02:24:41,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:24:41,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:41,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:41,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:24:41,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:24:41,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:24:41,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:24:41,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 02:24:41,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:41,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 24 [2022-11-03 02:24:41,792 INFO L356 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-11-03 02:24:41,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 31 [2022-11-03 02:24:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:24:41,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:24:44,144 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-03 02:24:44,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2022-11-03 02:24:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:24:44,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772790775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:24:44,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2062044317] [2022-11-03 02:24:44,165 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-03 02:24:44,165 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:24:44,166 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:24:44,166 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:24:44,166 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:24:44,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:24:44,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2022-11-03 02:24:44,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 23 [2022-11-03 02:24:45,231 INFO L197 IcfgInterpreter]: Interpreting procedure get_dummy with input of size 88 for LOIs [2022-11-03 02:24:45,261 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:25:10,245 WARN L234 SmtUtils]: Spent 18.43s on a formula simplification. DAG size of input: 114 DAG size of output: 98 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:25:19,770 WARN L234 SmtUtils]: Spent 9.40s on a formula simplification. DAG size of input: 114 DAG size of output: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:25:22,418 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '460#(and (<= 4 |ULTIMATE.start_main_~pd2~0#1.base|) (= |~#d2~0.offset| 0) (= |ULTIMATE.start_check_~s1#1.offset| |ULTIMATE.start_check_#in~s1#1.offset|) (= |~#d1~0.base| 4) (<= |ULTIMATE.start_main_~pd2~0#1.offset| 0) (= (ite (= (select (select |#memory_int| |ULTIMATE.start_check_~s1#1.base|) (+ (* 4 |ULTIMATE.start_check_~i#1|) |ULTIMATE.start_check_~s1#1.offset| 8)) |ULTIMATE.start_check_~i#1|) 1 0) |ULTIMATE.start_check_#res#1|) (= 5 |~#d2~0.base|) (= |ULTIMATE.start_check_#in~i#1| |ULTIMATE.start_check_~i#1|) (<= |ULTIMATE.start_main_~pa~0#1.base| 5) (<= |ULTIMATE.start_main_~pd1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~pd2~0#1.offset|) (<= 4 |ULTIMATE.start_main_~pa~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (<= 4 |ULTIMATE.start_main_~pd1~0#1.base|) (= |ULTIMATE.start_check_#in~s1#1.base| |ULTIMATE.start_check_~s1#1.base|) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_check_#in~i#1|) (= |ULTIMATE.start_check_#in~s1#1.base| |ULTIMATE.start_main_~pd2~0#1.base|) (= |ULTIMATE.start_check_#in~s1#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|) (= |~#d1~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~pd1~0#1.offset|) (= 0 |ULTIMATE.start_check_#res#1|) (<= |ULTIMATE.start_main_~pd1~0#1.base| 5) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~pd2~0#1.base| 5) (= |#NULL.base| 0))' at error location [2022-11-03 02:25:22,418 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:25:22,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:25:22,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-11-03 02:25:22,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936806693] [2022-11-03 02:25:22,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:25:22,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 02:25:22,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:22,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 02:25:22,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=773, Unknown=1, NotChecked=0, Total=870 [2022-11-03 02:25:22,421 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:25:23,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:23,025 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-11-03 02:25:23,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:25:23,025 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-11-03 02:25:23,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:23,026 INFO L225 Difference]: With dead ends: 24 [2022-11-03 02:25:23,026 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:25:23,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 40.1s TimeCoverageRelationStatistics Valid=221, Invalid=1260, Unknown=1, NotChecked=0, Total=1482 [2022-11-03 02:25:23,028 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:23,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 44 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2022-11-03 02:25:23,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:25:23,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:25:23,029 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) [2022-11-03 02:25:23,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:25:23,029 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-11-03 02:25:23,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:23,030 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:25:23,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:25:23,030 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:25:23,030 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:25:23,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:25:23,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:23,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:23,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 02:25:23,297 INFO L902 garLoopResultBuilder]: At program point get_dummyENTRY(lines 23 26) the Hoare annotation is: true [2022-11-03 02:25:23,298 INFO L899 garLoopResultBuilder]: For program point get_dummyEXIT(lines 23 26) no Hoare annotation was computed. [2022-11-03 02:25:23,298 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 02:25:23,298 INFO L895 garLoopResultBuilder]: At program point L46(lines 34 54) the Hoare annotation is: false [2022-11-03 02:25:23,298 INFO L899 garLoopResultBuilder]: For program point L42-1(lines 42 44) no Hoare annotation was computed. [2022-11-03 02:25:23,298 INFO L895 garLoopResultBuilder]: At program point L42-3(lines 42 44) the Hoare annotation is: (and (let ((.cse0 (div (+ |ULTIMATE.start_main_~pd2~0#1.offset| (- |ULTIMATE.start_main_~pa~0#1.offset|)) (- 4)))) (= (+ 2 (select (select |#memory_int| |ULTIMATE.start_main_~pd2~0#1.base|) (+ (* .cse0 4) |ULTIMATE.start_main_~pd2~0#1.offset|))) .cse0)) (= (mod (+ (* 3 |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~pd2~0#1.offset|) 4) 0) (= |ULTIMATE.start_main_~pa~0#1.base| |ULTIMATE.start_main_~pd2~0#1.base|) (<= |ULTIMATE.start_main_~i~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|))) [2022-11-03 02:25:23,298 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 48) no Hoare annotation was computed. [2022-11-03 02:25:23,299 INFO L895 garLoopResultBuilder]: At program point L42-4(lines 42 44) the Hoare annotation is: (exists ((|aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55| Int) (|aux_div_ULTIMATE.start_main_~pa~0#1.offset_94| Int)) (let ((.cse0 (* |aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55| 4)) (.cse1 (select (select |#memory_int| |ULTIMATE.start_main_~pd2~0#1.base|) (+ (* |aux_div_ULTIMATE.start_main_~pa~0#1.offset_94| 4) |ULTIMATE.start_main_~pd2~0#1.offset| (* |aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55| (- 4)))))) (and (<= 0 .cse0) (<= |ULTIMATE.start_main_~i~0#1| .cse1) (< .cse0 4) (<= .cse1 |ULTIMATE.start_main_~i~0#1|) (= |aux_div_ULTIMATE.start_main_~pa~0#1.offset_94| (+ .cse1 2))))) [2022-11-03 02:25:23,299 INFO L902 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: true [2022-11-03 02:25:23,299 INFO L899 garLoopResultBuilder]: For program point L38-2(lines 38 48) no Hoare annotation was computed. [2022-11-03 02:25:23,299 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2022-11-03 02:25:23,299 INFO L902 garLoopResultBuilder]: At program point L36-2(line 36) the Hoare annotation is: true [2022-11-03 02:25:23,299 INFO L899 garLoopResultBuilder]: For program point L36-3(line 36) no Hoare annotation was computed. [2022-11-03 02:25:23,299 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 02:25:23,300 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2022-11-03 02:25:23,300 INFO L902 garLoopResultBuilder]: At program point L53(lines 33 54) the Hoare annotation is: true [2022-11-03 02:25:23,300 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 47) no Hoare annotation was computed. [2022-11-03 02:25:23,303 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-11-03 02:25:23,305 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:25:23,320 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,321 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,321 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,322 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,322 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,322 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,322 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,322 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,322 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,323 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,323 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,324 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,324 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,324 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,324 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,324 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,324 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,324 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:25:23 BoogieIcfgContainer [2022-11-03 02:25:23,325 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:25:23,326 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:25:23,326 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:25:23,326 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:25:23,327 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:24:04" (3/4) ... [2022-11-03 02:25:23,330 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 02:25:23,335 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2022-11-03 02:25:23,339 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-03 02:25:23,339 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-03 02:25:23,340 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 02:25:23,340 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:25:23,364 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 : int, aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 : int :: (((0 <= aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * 4 && i <= unknown-#memory_int-unknown[pd2][aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 * 4 + pd2 + aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * -4]) && aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * 4 < 4) && unknown-#memory_int-unknown[pd2][aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 * 4 + pd2 + aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * -4] <= i) && aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 == unknown-#memory_int-unknown[pd2][aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 * 4 + pd2 + aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * -4] + 2) [2022-11-03 02:25:23,376 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:25:23,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:25:23,377 INFO L158 Benchmark]: Toolchain (without parser) took 79980.86ms. Allocated memory was 79.7MB in the beginning and 144.7MB in the end (delta: 65.0MB). Free memory was 43.3MB in the beginning and 49.0MB in the end (delta: -5.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-11-03 02:25:23,377 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 79.7MB. Free memory was 59.6MB in the beginning and 59.6MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:25:23,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.44ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 43.1MB in the beginning and 72.4MB in the end (delta: -29.2MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2022-11-03 02:25:23,378 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.28ms. Allocated memory is still 96.5MB. Free memory was 72.4MB in the beginning and 70.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:25:23,378 INFO L158 Benchmark]: Boogie Preprocessor took 52.29ms. Allocated memory is still 96.5MB. Free memory was 70.7MB in the beginning and 69.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:25:23,379 INFO L158 Benchmark]: RCFGBuilder took 581.99ms. Allocated memory is still 96.5MB. Free memory was 69.3MB in the beginning and 54.3MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-03 02:25:23,379 INFO L158 Benchmark]: TraceAbstraction took 78900.34ms. Allocated memory was 96.5MB in the beginning and 144.7MB in the end (delta: 48.2MB). Free memory was 53.7MB in the beginning and 51.1MB in the end (delta: 2.6MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. [2022-11-03 02:25:23,379 INFO L158 Benchmark]: Witness Printer took 50.51ms. Allocated memory is still 144.7MB. Free memory was 51.1MB in the beginning and 49.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:25:23,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 79.7MB. Free memory was 59.6MB in the beginning and 59.6MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.44ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 43.1MB in the beginning and 72.4MB in the end (delta: -29.2MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.28ms. Allocated memory is still 96.5MB. Free memory was 72.4MB in the beginning and 70.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.29ms. Allocated memory is still 96.5MB. Free memory was 70.7MB in the beginning and 69.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 581.99ms. Allocated memory is still 96.5MB. Free memory was 69.3MB in the beginning and 54.3MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 78900.34ms. Allocated memory was 96.5MB in the beginning and 144.7MB in the end (delta: 48.2MB). Free memory was 53.7MB in the beginning and 51.1MB in the end (delta: 2.6MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. * Witness Printer took 50.51ms. Allocated memory is still 144.7MB. Free memory was 51.1MB in the beginning and 49.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] * 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: 52]: 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 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 78.8s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 31 IncrementalHoareTripleChecker+Unchecked, 92 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 42 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 72.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 14 NumberOfFragments, 104 HoareAnnotationTreeSize, 8 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 210 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 105 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 135 ConstructedInterpolants, 11 QuantifiedInterpolants, 957 SizeOfPredicates, 33 NumberOfNonLiveVariables, 299 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 29/58 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((2 + unknown-#memory_int-unknown[pd2][(pd2 + -pa) / -4 * 4 + pd2] == (pd2 + -pa) / -4 && (3 * pa + pd2) % 4 == 0) && pa == pd2) && i <= unknown-#memory_int-unknown[pa][pa] - InvariantResult [Line: 42]: Loop Invariant [2022-11-03 02:25:23,411 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,411 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,411 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,412 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,412 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,412 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,412 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,412 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,412 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,413 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,415 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,418 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,418 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,418 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,419 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-03 02:25:23,419 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,419 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-03 02:25:23,419 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] Derived loop invariant: (\exists aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 : int, aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 : int :: (((0 <= aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * 4 && i <= unknown-#memory_int-unknown[pd2][aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 * 4 + pd2 + aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * -4]) && aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * 4 < 4) && unknown-#memory_int-unknown[pd2][aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 * 4 + pd2 + aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * -4] <= i) && aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 == unknown-#memory_int-unknown[pd2][aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 * 4 + pd2 + aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * -4] + 2) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-03 02:25:23,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827f3c5-edfc-468d-a353-d54250aae7f3/bin/utaipan-7li7fVZpFI/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