./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test27-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test27-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta --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 8b17e864f5b8145df67cb2b3dc045f82af33b1bd3c9c5e4c95275bcb385f71da --- 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-dbf71c6-m [2022-10-17 17:38:13,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:38:13,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:38:13,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:38:13,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:38:13,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:38:13,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:38:13,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:38:13,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:38:13,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:38:13,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:38:13,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:38:13,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:38:13,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:38:13,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:38:13,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:38:13,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:38:13,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:38:13,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:38:13,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:38:13,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:38:13,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:38:13,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:38:13,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:38:13,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:38:13,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:38:13,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:38:13,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:38:13,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:38:13,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:38:13,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:38:13,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:38:13,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:38:13,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:38:13,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:38:13,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:38:13,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:38:13,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:38:13,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:38:13,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:38:13,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:38:13,873 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:38:13,918 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:38:13,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:38:13,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:38:13,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:38:13,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:38:13,921 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:38:13,921 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:38:13,922 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:38:13,922 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:38:13,922 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:38:13,923 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:38:13,924 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:38:13,924 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:38:13,924 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:38:13,924 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:38:13,925 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:38:13,925 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:38:13,925 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:38:13,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:38:13,926 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:38:13,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:38:13,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:38:13,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:38:13,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:38:13,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:38:13,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:38:13,929 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:38:13,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:38:13,930 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:38:13,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:38:13,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:38:13,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:38:13,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:38:13,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:38:13,932 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:38:13,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:38:13,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:38:13,932 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:38:13,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:38:13,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:38:13,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:38:13,933 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_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b17e864f5b8145df67cb2b3dc045f82af33b1bd3c9c5e4c95275bcb385f71da [2022-10-17 17:38:14,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:38:14,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:38:14,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:38:14,337 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:38:14,338 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:38:14,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-regression/test27-2.c [2022-10-17 17:38:14,402 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/data/9d9241717/5f7b4c21e1f5484a9b5222bc4ce486a4/FLAGe11c5f0e5 [2022-10-17 17:38:14,988 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:38:14,988 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/sv-benchmarks/c/ldv-regression/test27-2.c [2022-10-17 17:38:14,995 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/data/9d9241717/5f7b4c21e1f5484a9b5222bc4ce486a4/FLAGe11c5f0e5 [2022-10-17 17:38:15,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/data/9d9241717/5f7b4c21e1f5484a9b5222bc4ce486a4 [2022-10-17 17:38:15,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:38:15,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:38:15,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:38:15,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:38:15,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:38:15,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:38:15" (1/1) ... [2022-10-17 17:38:15,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531e669a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:15, skipping insertion in model container [2022-10-17 17:38:15,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:38:15" (1/1) ... [2022-10-17 17:38:15,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:38:15,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:38:15,599 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_98279913-75e7-45e6-ae03-7469686342bb/sv-benchmarks/c/ldv-regression/test27-2.c[1224,1237] [2022-10-17 17:38:15,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:38:15,610 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:38:15,632 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_98279913-75e7-45e6-ae03-7469686342bb/sv-benchmarks/c/ldv-regression/test27-2.c[1224,1237] [2022-10-17 17:38:15,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:38:15,647 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:38:15,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:15 WrapperNode [2022-10-17 17:38:15,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:38:15,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:38:15,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:38:15,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:38:15,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:15" (1/1) ... [2022-10-17 17:38:15,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:15" (1/1) ... [2022-10-17 17:38:15,688 INFO L138 Inliner]: procedures = 16, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 113 [2022-10-17 17:38:15,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:38:15,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:38:15,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:38:15,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:38:15,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:15" (1/1) ... [2022-10-17 17:38:15,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:15" (1/1) ... [2022-10-17 17:38:15,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:15" (1/1) ... [2022-10-17 17:38:15,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:15" (1/1) ... [2022-10-17 17:38:15,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:15" (1/1) ... [2022-10-17 17:38:15,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:15" (1/1) ... [2022-10-17 17:38:15,716 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:15" (1/1) ... [2022-10-17 17:38:15,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:15" (1/1) ... [2022-10-17 17:38:15,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:38:15,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:38:15,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:38:15,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:38:15,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:15" (1/1) ... [2022-10-17 17:38:15,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:38:15,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:15,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:38:15,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:38:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:38:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:38:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:38:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:38:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:38:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:38:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:38:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:38:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:38:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:38:15,937 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:38:15,939 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:38:16,257 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:38:16,286 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:38:16,287 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 17:38:16,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:16 BoogieIcfgContainer [2022-10-17 17:38:16,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:38:16,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:38:16,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:38:16,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:38:16,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:38:15" (1/3) ... [2022-10-17 17:38:16,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e976fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:38:16, skipping insertion in model container [2022-10-17 17:38:16,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:38:15" (2/3) ... [2022-10-17 17:38:16,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e976fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:38:16, skipping insertion in model container [2022-10-17 17:38:16,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:16" (3/3) ... [2022-10-17 17:38:16,298 INFO L112 eAbstractionObserver]: Analyzing ICFG test27-2.c [2022-10-17 17:38:16,318 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:38:16,319 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:38:16,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:38:16,374 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;@48530253, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:38:16,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:38:16,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:16,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:38:16,388 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:16,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:38:16,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:16,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:16,399 INFO L85 PathProgramCache]: Analyzing trace with hash 994857001, now seen corresponding path program 1 times [2022-10-17 17:38:16,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:16,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905235315] [2022-10-17 17:38:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:16,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:16,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:16,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:16,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905235315] [2022-10-17 17:38:16,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905235315] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:38:16,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:38:16,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:38:16,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887098109] [2022-10-17 17:38:16,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:38:16,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:38:16,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:17,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:38:17,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:38:17,040 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-10-17 17:38:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:17,103 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2022-10-17 17:38:17,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:38:17,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-17 17:38:17,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:17,115 INFO L225 Difference]: With dead ends: 25 [2022-10-17 17:38:17,115 INFO L226 Difference]: Without dead ends: 11 [2022-10-17 17:38:17,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:38:17,125 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:17,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:38:17,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-10-17 17:38:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-10-17 17:38:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-10-17 17:38:17,184 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2022-10-17 17:38:17,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:17,185 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-10-17 17:38:17,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-10-17 17:38:17,187 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-10-17 17:38:17,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:38:17,188 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:17,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:38:17,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:38:17,189 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:17,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:17,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1531794660, now seen corresponding path program 1 times [2022-10-17 17:38:17,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:17,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255627977] [2022-10-17 17:38:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:17,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:17,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:17,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255627977] [2022-10-17 17:38:17,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255627977] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:38:17,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578919772] [2022-10-17 17:38:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:17,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:17,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:17,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:38:17,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:38:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:17,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:38:17,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:38:17,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:17,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:38:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:17,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578919772] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:38:17,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [732206553] [2022-10-17 17:38:17,654 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-10-17 17:38:17,655 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:38:17,662 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:38:17,669 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:38:17,670 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:38:17,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:17,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:17,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:17,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:18,131 INFO L356 Elim1Store]: treesize reduction 315, result has 15.5 percent of original size [2022-10-17 17:38:18,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 80 treesize of output 121 [2022-10-17 17:38:18,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:18,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:18,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:18,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:18,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 26 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 45 [2022-10-17 17:38:18,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-10-17 17:38:18,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-10-17 17:38:18,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:18,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:18,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2022-10-17 17:38:18,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:18,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:18,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:18,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:18,804 INFO L356 Elim1Store]: treesize reduction 192, result has 14.7 percent of original size [2022-10-17 17:38:18,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 479 treesize of output 443 [2022-10-17 17:38:18,891 INFO L356 Elim1Store]: treesize reduction 46, result has 13.2 percent of original size [2022-10-17 17:38:18,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 445 treesize of output 423 [2022-10-17 17:38:18,955 INFO L356 Elim1Store]: treesize reduction 46, result has 13.2 percent of original size [2022-10-17 17:38:18,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 445 treesize of output 423 [2022-10-17 17:38:19,017 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-10-17 17:38:19,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 436 treesize of output 441 [2022-10-17 17:38:19,080 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-10-17 17:38:19,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 432 treesize of output 437 [2022-10-17 17:38:20,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:20,922 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-10-17 17:38:20,922 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 1 case distinctions, treesize of input 42 treesize of output 29 [2022-10-17 17:38:20,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:20,948 INFO L356 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2022-10-17 17:38:20,949 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 1 case distinctions, treesize of input 51 treesize of output 16 [2022-10-17 17:38:20,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:20,988 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-10-17 17:38:20,988 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 1 case distinctions, treesize of input 42 treesize of output 29 [2022-10-17 17:38:21,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:21,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:21,112 INFO L356 Elim1Store]: treesize reduction 75, result has 40.0 percent of original size [2022-10-17 17:38:21,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 69 [2022-10-17 17:38:21,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:21,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:21,246 INFO L356 Elim1Store]: treesize reduction 71, result has 39.3 percent of original size [2022-10-17 17:38:21,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 165 treesize of output 65 [2022-10-17 17:38:21,330 INFO L356 Elim1Store]: treesize reduction 29, result has 44.2 percent of original size [2022-10-17 17:38:21,331 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 1 case distinctions, treesize of input 39 treesize of output 23 [2022-10-17 17:38:21,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:21,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 27 [2022-10-17 17:38:21,411 INFO L356 Elim1Store]: treesize reduction 29, result has 44.2 percent of original size [2022-10-17 17:38:21,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2022-10-17 17:38:22,028 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:38:24,817 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '131#(and (= |ULTIMATE.start_main_~#cont~0#1.offset| 0) (= |ULTIMATE.start_check_~pc#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (or (= |ULTIMATE.start_main_~#dummy~0#1.base| |ULTIMATE.start_main_~#cont~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|) |ULTIMATE.start_main_~#a~0#1.base|)) (or (and (exists ((|v_ULTIMATE.start_main_~i~0#1_17| Int)) (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|)) |ULTIMATE.start_main_~#dummy~0#1.offset|) (< |v_ULTIMATE.start_main_~i~0#1_17| 9) (= (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|))))) |ULTIMATE.start_main_~pa~0#1.offset|) (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|)))) (+ (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (* |v_ULTIMATE.start_main_~i~0#1_17| 4))) (+ |ULTIMATE.start_main_~i~0#1| 10)) (<= 0 |v_ULTIMATE.start_main_~i~0#1_17|) (= |ULTIMATE.start_main_~pa~0#1.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|))))) (< 0 (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_17| 4)))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_17| 4))) |v_ULTIMATE.start_main_~i~0#1_17|) (= |ULTIMATE.start_main_~#dummy~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_17| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))))) (= |ULTIMATE.start_main_~#dummy~0#1.base| |ULTIMATE.start_main_~#cont~0#1.base|)) (and (= |ULTIMATE.start_main_~#dummy~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (or (and (= |ULTIMATE.start_main_~#cont~0#1.offset| (+ |ULTIMATE.start_main_~#a~0#1.offset| (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)))) (= |ULTIMATE.start_main_~#a~0#1.base| |ULTIMATE.start_main_~#cont~0#1.base|)) (and (= |ULTIMATE.start_main_~#dummy~0#1.base| |ULTIMATE.start_main_~#a~0#1.base|) (= (+ |ULTIMATE.start_main_~#a~0#1.offset| (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4))) |ULTIMATE.start_main_~#dummy~0#1.offset|)) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)))) (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4))) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|) (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4))))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|) (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4))))) |ULTIMATE.start_main_~pa~0#1.base|) (< (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4) 9) (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|)))) (+ (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)))) (+ |ULTIMATE.start_main_~i~0#1| 10)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|)) |ULTIMATE.start_main_~#dummy~0#1.offset|) (= (mod (+ (* |ULTIMATE.start_main_~#a~0#1.offset| 3) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4) 0) (< 0 (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4))))) (= (+ (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|) (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4))))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|) (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)))))) |ULTIMATE.start_main_~pa~0#1.offset|))) (= |ULTIMATE.start_main_~#dummies~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#dummies~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|) |ULTIMATE.start_main_~#dummies~0#1.offset|) (= |ULTIMATE.start_main_~#dummies~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (= |ULTIMATE.start_check_#in~i#1| |ULTIMATE.start_check_~i#1|) (<= 0 |ULTIMATE.start_main_~#dummy~0#1.base|) (<= 10 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_check_~pc#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (= (ite (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (* 4 |ULTIMATE.start_check_~i#1|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (* 4 |ULTIMATE.start_check_~i#1|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|))))) (+ (* 4 |ULTIMATE.start_check_~i#1|) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (* 4 |ULTIMATE.start_check_~i#1|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (* 4 |ULTIMATE.start_check_~i#1|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)))))) |ULTIMATE.start_check_~i#1|) 1 0) |ULTIMATE.start_check_#res#1|) (<= 0 |ULTIMATE.start_main_~#cont~0#1.base|) (= |ULTIMATE.start_main_~#cont~0#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_check_#in~i#1|) (= |ULTIMATE.start_main_~#cont~0#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~#dummy~0#1.offset| 0) (= |#NULL.offset| 0) (= 0 |ULTIMATE.start_check_#res#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:38:24,818 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:38:24,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:38:24,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-10-17 17:38:24,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309978374] [2022-10-17 17:38:24,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:38:24,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:38:24,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:24,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:38:24,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-10-17 17:38:24,822 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-10-17 17:38:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:24,857 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-10-17 17:38:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:38:24,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-17 17:38:24,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:24,858 INFO L225 Difference]: With dead ends: 22 [2022-10-17 17:38:24,858 INFO L226 Difference]: Without dead ends: 14 [2022-10-17 17:38:24,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-10-17 17:38:24,860 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:24,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:38:24,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-10-17 17:38:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-10-17 17:38:24,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-10-17 17:38:24,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-10-17 17:38:24,865 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2022-10-17 17:38:24,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:24,866 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-10-17 17:38:24,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-10-17 17:38:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-10-17 17:38:24,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:38:24,867 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:24,867 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:38:24,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:38:25,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-10-17 17:38:25,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:25,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:25,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1028911079, now seen corresponding path program 2 times [2022-10-17 17:38:25,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:25,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815048104] [2022-10-17 17:38:25,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:25,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:38:25,323 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:25,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:38:25,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815048104] [2022-10-17 17:38:25,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815048104] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:38:25,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564060993] [2022-10-17 17:38:25,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:38:25,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:25,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:38:25,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:38:25,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:38:25,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-17 17:38:25,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:38:25,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 17:38:25,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:38:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:25,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:38:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:38:25,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564060993] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:38:25,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [366295168] [2022-10-17 17:38:25,770 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-10-17 17:38:25,770 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:38:25,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:38:25,771 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:38:25,771 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:38:25,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:25,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:25,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:25,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:26,061 INFO L356 Elim1Store]: treesize reduction 195, result has 25.3 percent of original size [2022-10-17 17:38:26,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 85 [2022-10-17 17:38:26,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:26,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:26,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:26,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:26,318 INFO L356 Elim1Store]: treesize reduction 315, result has 15.5 percent of original size [2022-10-17 17:38:26,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 80 treesize of output 121 [2022-10-17 17:38:26,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:26,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:26,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2022-10-17 17:38:26,439 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-10-17 17:38:26,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-10-17 17:38:26,664 INFO L356 Elim1Store]: treesize reduction 46, result has 13.2 percent of original size [2022-10-17 17:38:26,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 453 treesize of output 431 [2022-10-17 17:38:26,731 INFO L356 Elim1Store]: treesize reduction 46, result has 13.2 percent of original size [2022-10-17 17:38:26,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 453 treesize of output 431 [2022-10-17 17:38:26,789 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-10-17 17:38:26,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 444 treesize of output 449 [2022-10-17 17:38:26,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:26,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:26,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:26,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:26,904 INFO L356 Elim1Store]: treesize reduction 192, result has 14.7 percent of original size [2022-10-17 17:38:26,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 475 treesize of output 439 [2022-10-17 17:38:26,982 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-10-17 17:38:26,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 432 treesize of output 437 [2022-10-17 17:38:28,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:28,362 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-10-17 17:38:28,362 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 1 case distinctions, treesize of input 42 treesize of output 29 [2022-10-17 17:38:28,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:28,394 INFO L356 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2022-10-17 17:38:28,396 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 1 case distinctions, treesize of input 51 treesize of output 16 [2022-10-17 17:38:28,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:38:28,441 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-10-17 17:38:28,442 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 1 case distinctions, treesize of input 42 treesize of output 29 [2022-10-17 17:38:28,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:28,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:28,534 INFO L356 Elim1Store]: treesize reduction 71, result has 39.3 percent of original size [2022-10-17 17:38:28,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 165 treesize of output 65 [2022-10-17 17:38:28,595 INFO L356 Elim1Store]: treesize reduction 29, result has 44.2 percent of original size [2022-10-17 17:38:28,596 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 1 case distinctions, treesize of input 39 treesize of output 23 [2022-10-17 17:38:28,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:28,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 27 [2022-10-17 17:38:28,645 INFO L356 Elim1Store]: treesize reduction 29, result has 44.2 percent of original size [2022-10-17 17:38:28,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2022-10-17 17:38:28,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:28,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:38:28,740 INFO L356 Elim1Store]: treesize reduction 75, result has 40.0 percent of original size [2022-10-17 17:38:28,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 69 [2022-10-17 17:38:29,189 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:38:31,518 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '279#(and (= |ULTIMATE.start_main_~#cont~0#1.offset| 0) (= |ULTIMATE.start_check_~pc#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (or (= |ULTIMATE.start_main_~#dummy~0#1.base| |ULTIMATE.start_main_~#cont~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|) |ULTIMATE.start_main_~#a~0#1.base|)) (or (and (= |ULTIMATE.start_main_~#dummy~0#1.base| |ULTIMATE.start_main_~#cont~0#1.base|) (exists ((|v_ULTIMATE.start_main_~i~0#1_19| Int)) (and (< |v_ULTIMATE.start_main_~i~0#1_19| 9) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|)) |ULTIMATE.start_main_~#dummy~0#1.offset|) (<= 0 |v_ULTIMATE.start_main_~i~0#1_19|) (< 0 (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_19| 4)))) (= |ULTIMATE.start_main_~#dummy~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (= (+ (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)))) (* |v_ULTIMATE.start_main_~i~0#1_19| 4)) |ULTIMATE.start_main_~pa~0#1.offset|) (= |v_ULTIMATE.start_main_~i~0#1_19| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_19| 4)))) (= |ULTIMATE.start_main_~pa~0#1.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|))))) (= (+ |ULTIMATE.start_main_~i~0#1| 10) (select (select |#memory_int| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|)))) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_19| 4) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))))))))) (and (= |ULTIMATE.start_main_~#dummy~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (or (and (= |ULTIMATE.start_main_~#cont~0#1.offset| (+ |ULTIMATE.start_main_~#a~0#1.offset| (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)))) (= |ULTIMATE.start_main_~#a~0#1.base| |ULTIMATE.start_main_~#cont~0#1.base|)) (and (= |ULTIMATE.start_main_~#dummy~0#1.base| |ULTIMATE.start_main_~#a~0#1.base|) (= (+ |ULTIMATE.start_main_~#a~0#1.offset| (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4))) |ULTIMATE.start_main_~#dummy~0#1.offset|)) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)))) (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4))) (= (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|) (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4))))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|) (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4))))) |ULTIMATE.start_main_~pa~0#1.base|) (< (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4) 9) (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|)))) (+ (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|))) (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)))) (+ |ULTIMATE.start_main_~i~0#1| 10)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummies~0#1.base|) (+ (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)) 4 |ULTIMATE.start_main_~#dummies~0#1.offset|)) |ULTIMATE.start_main_~#dummy~0#1.offset|) (= (mod (+ (* |ULTIMATE.start_main_~#a~0#1.offset| 3) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4) 0) (< 0 (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4))))) (= (+ (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|) (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4))))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|) (* 4 (div (+ (* (- 1) |ULTIMATE.start_main_~#a~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#dummy~0#1.base|) |ULTIMATE.start_main_~#dummy~0#1.offset|)) 4)))))) |ULTIMATE.start_main_~pa~0#1.offset|))) (= |ULTIMATE.start_main_~#dummies~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#dummies~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|) |ULTIMATE.start_main_~#dummies~0#1.offset|) (= |ULTIMATE.start_main_~#dummies~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (= |ULTIMATE.start_check_#in~i#1| |ULTIMATE.start_check_~i#1|) (<= 0 |ULTIMATE.start_main_~#dummy~0#1.base|) (<= 10 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_check_~pc#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (= (ite (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (* 4 |ULTIMATE.start_check_~i#1|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (* 4 |ULTIMATE.start_check_~i#1|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|))))) (+ (* 4 |ULTIMATE.start_check_~i#1|) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (* 4 |ULTIMATE.start_check_~i#1|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (* 4 |ULTIMATE.start_check_~i#1|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)))))) |ULTIMATE.start_check_~i#1|) 1 0) |ULTIMATE.start_check_#res#1|) (<= 0 |ULTIMATE.start_main_~#cont~0#1.base|) (= |ULTIMATE.start_main_~#cont~0#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_check_#in~i#1|) (= |ULTIMATE.start_main_~#cont~0#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~#dummy~0#1.offset| 0) (= |#NULL.offset| 0) (= 0 |ULTIMATE.start_check_#res#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:38:31,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:38:31,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:38:31,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-10-17 17:38:31,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167466730] [2022-10-17 17:38:31,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:38:31,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 17:38:31,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:38:31,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 17:38:31,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-10-17 17:38:31,522 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:31,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:38:31,575 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2022-10-17 17:38:31,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:38:31,575 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-17 17:38:31,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:38:31,576 INFO L225 Difference]: With dead ends: 28 [2022-10-17 17:38:31,576 INFO L226 Difference]: Without dead ends: 20 [2022-10-17 17:38:31,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-10-17 17:38:31,578 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:38:31,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:38:31,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-17 17:38:31,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-10-17 17:38:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-10-17 17:38:31,583 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2022-10-17 17:38:31,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:38:31,584 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-10-17 17:38:31,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:38:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-10-17 17:38:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:38:31,585 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:38:31,585 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:38:31,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:38:31,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:38:31,795 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:38:31,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:38:31,795 INFO L85 PathProgramCache]: Analyzing trace with hash 360205369, now seen corresponding path program 3 times [2022-10-17 17:38:31,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:38:31,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618477412] [2022-10-17 17:38:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:38:31,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:38:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:38:32,176 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:38:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:38:32,356 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-10-17 17:38:32,356 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:38:32,357 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:38:32,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:38:32,363 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-10-17 17:38:32,367 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:38:32,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:38:32 BoogieIcfgContainer [2022-10-17 17:38:32,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:38:32,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:38:32,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:38:32,407 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:38:32,407 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:38:16" (3/4) ... [2022-10-17 17:38:32,409 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 17:38:32,460 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:38:32,460 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:38:32,461 INFO L158 Benchmark]: Toolchain (without parser) took 17099.76ms. Allocated memory was 96.5MB in the beginning and 262.1MB in the end (delta: 165.7MB). Free memory was 58.4MB in the beginning and 89.2MB in the end (delta: -30.8MB). Peak memory consumption was 135.9MB. Max. memory is 16.1GB. [2022-10-17 17:38:32,461 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 96.5MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:38:32,461 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.87ms. Allocated memory is still 96.5MB. Free memory was 58.2MB in the beginning and 69.8MB in the end (delta: -11.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 17:38:32,462 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.54ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 68.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:38:32,462 INFO L158 Benchmark]: Boogie Preprocessor took 31.17ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 66.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:38:32,462 INFO L158 Benchmark]: RCFGBuilder took 568.40ms. Allocated memory is still 96.5MB. Free memory was 66.4MB in the beginning and 50.2MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-10-17 17:38:32,463 INFO L158 Benchmark]: TraceAbstraction took 16114.71ms. Allocated memory was 96.5MB in the beginning and 262.1MB in the end (delta: 165.7MB). Free memory was 49.4MB in the beginning and 92.4MB in the end (delta: -43.0MB). Peak memory consumption was 123.8MB. Max. memory is 16.1GB. [2022-10-17 17:38:32,463 INFO L158 Benchmark]: Witness Printer took 53.57ms. Allocated memory is still 262.1MB. Free memory was 92.4MB in the beginning and 89.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 17:38:32,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 96.5MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.87ms. Allocated memory is still 96.5MB. Free memory was 58.2MB in the beginning and 69.8MB in the end (delta: -11.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.54ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 68.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.17ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 66.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 568.40ms. Allocated memory is still 96.5MB. Free memory was 66.4MB in the beginning and 50.2MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 16114.71ms. Allocated memory was 96.5MB in the beginning and 262.1MB in the end (delta: 165.7MB). Free memory was 49.4MB in the beginning and 92.4MB in the end (delta: -43.0MB). Peak memory consumption was 123.8MB. Max. memory is 16.1GB. * Witness Printer took 53.57ms. Allocated memory is still 262.1MB. Free memory was 92.4MB in the beginning and 89.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 55]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] struct cont cont; [L24] struct dummy dummy; [L25] struct dummy *dummies[10]; [L26] int a[10]; [L27] int i, *pa; [L28] i = __VERIFIER_nondet_int() [L29] int j = 0; VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=0] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=1] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=2] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=3] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=4] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=5] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=6] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=7] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=8] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=9] [L29] COND TRUE j < 10 [L30] a[j] = __VERIFIER_nondet_int() [L34] dummies[j] = 0 [L29] j++ VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=10] [L29] COND FALSE !(j < 10) VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=10] [L36] COND TRUE i >= 0 && i < 9 [L37] a[i] = i [L38] dummy.array = &a[i] [L39] dummies[i + 1] = &dummy [L40] cont.array = &dummies[0] [L41] EXPR cont.array [L41] EXPR cont.array[i] [L41] EXPR cont.array[i]->array [L41] pa = &cont.array[i]->array[i] [L42] EXPR a[i] VAL [a={5:0}, a[i]=1, cont={7:0}, dummies={9:0}, dummy={6:0}, i=1, j=10, pa={56:17}] [L42] COND TRUE a[i] > 0 [L43] EXPR dummies[i + 1] [L43] EXPR dummies[i + 1]->array [L43] EXPR dummies[i + 1]->array[i] [L43] i = dummies[i + 1]->array[i] - 10 [L44] EXPR \read(*pa) VAL [\read(*pa)=-4, a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=0, j=10, pa={56:17}] [L44] COND FALSE !(i < *pa) [L47] CALL, EXPR check(&cont, i) [L18] EXPR pc->array [L18] EXPR pc->array[i] [L18] EXPR pc->array[i]->array [L18] EXPR pc->array[i]->array[i] [L18] return pc->array[i]->array[i] == i; [L47] RET, EXPR check(&cont, i) [L47] COND TRUE !check(&cont, i) [L55] reach_error() VAL [a={5:0}, cont={7:0}, dummies={9:0}, dummy={6:0}, i=0, j=10, pa={56:17}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.0s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 25 mSDtfsCounter, 41 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 533 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-10-17 17:38:32,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98279913-75e7-45e6-ae03-7469686342bb/bin/utaipan-G1rejxKTta/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE