./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_copy6_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_copy6_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f9e86f2555d2c0682f4edf4cb7d0ea92e4bc79b6db041eb754ceacfe5541e219 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:46:56,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:46:56,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:46:56,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:46:56,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:46:56,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:46:56,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:46:56,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:46:56,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:46:56,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:46:56,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:46:56,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:46:56,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:46:56,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:46:56,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:46:56,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:46:56,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:46:56,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:46:56,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:46:56,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:46:56,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:46:56,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:46:56,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:46:56,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:46:56,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:46:56,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:46:56,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:46:56,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:46:56,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:46:56,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:46:56,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:46:56,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:46:56,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:46:56,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:46:56,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:46:56,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:46:56,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:46:56,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:46:56,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:46:56,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:46:56,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:46:56,952 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:46:56,976 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:46:56,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:46:56,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:46:56,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:46:56,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:46:56,978 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:46:56,979 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:46:56,979 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:46:56,979 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:46:56,979 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:46:56,979 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:46:56,980 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:46:56,980 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:46:56,980 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:46:56,980 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:46:56,980 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:46:56,981 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:46:56,981 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:46:56,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:46:56,982 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:46:56,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:46:56,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:46:56,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:46:56,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:46:56,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:46:56,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:46:56,983 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:46:56,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:46:56,983 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:46:56,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:46:56,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:46:56,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:46:56,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:46:56,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:46:56,984 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:46:56,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:46:56,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:46:56,985 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:46:56,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:46:56,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:46:56,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:46:56,986 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_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9e86f2555d2c0682f4edf4cb7d0ea92e4bc79b6db041eb754ceacfe5541e219 [2022-11-03 03:46:57,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:46:57,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:46:57,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:46:57,290 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:46:57,291 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:46:57,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/array-examples/standard_copy6_ground-2.i [2022-11-03 03:46:57,365 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/data/70ebdf787/6869c98f0d1b4570ade220fff4d48f68/FLAG3f1f27986 [2022-11-03 03:46:57,831 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:46:57,832 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/sv-benchmarks/c/array-examples/standard_copy6_ground-2.i [2022-11-03 03:46:57,844 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/data/70ebdf787/6869c98f0d1b4570ade220fff4d48f68/FLAG3f1f27986 [2022-11-03 03:46:58,193 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/data/70ebdf787/6869c98f0d1b4570ade220fff4d48f68 [2022-11-03 03:46:58,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:46:58,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:46:58,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:46:58,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:46:58,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:46:58,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:46:58" (1/1) ... [2022-11-03 03:46:58,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@252025ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:58, skipping insertion in model container [2022-11-03 03:46:58,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:46:58" (1/1) ... [2022-11-03 03:46:58,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:46:58,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:46:58,469 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_002ac36c-62e1-4048-b02b-ca58f8b7844f/sv-benchmarks/c/array-examples/standard_copy6_ground-2.i[816,829] [2022-11-03 03:46:58,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:46:58,517 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:46:58,532 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_002ac36c-62e1-4048-b02b-ca58f8b7844f/sv-benchmarks/c/array-examples/standard_copy6_ground-2.i[816,829] [2022-11-03 03:46:58,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:46:58,582 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:46:58,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:58 WrapperNode [2022-11-03 03:46:58,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:46:58,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:46:58,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:46:58,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:46:58,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:58" (1/1) ... [2022-11-03 03:46:58,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:58" (1/1) ... [2022-11-03 03:46:58,641 INFO L138 Inliner]: procedures = 16, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 144 [2022-11-03 03:46:58,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:46:58,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:46:58,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:46:58,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:46:58,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:58" (1/1) ... [2022-11-03 03:46:58,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:58" (1/1) ... [2022-11-03 03:46:58,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:58" (1/1) ... [2022-11-03 03:46:58,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:58" (1/1) ... [2022-11-03 03:46:58,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:58" (1/1) ... [2022-11-03 03:46:58,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:58" (1/1) ... [2022-11-03 03:46:58,679 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:58" (1/1) ... [2022-11-03 03:46:58,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:58" (1/1) ... [2022-11-03 03:46:58,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:46:58,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:46:58,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:46:58,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:46:58,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:58" (1/1) ... [2022-11-03 03:46:58,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:46:58,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:58,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:46:58,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:46:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:46:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:46:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:46:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:46:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:46:58,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:46:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:46:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:46:58,900 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:46:58,911 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:46:59,207 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:46:59,254 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:46:59,254 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-03 03:46:59,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:46:59 BoogieIcfgContainer [2022-11-03 03:46:59,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:46:59,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:46:59,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:46:59,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:46:59,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:46:58" (1/3) ... [2022-11-03 03:46:59,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307484bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:46:59, skipping insertion in model container [2022-11-03 03:46:59,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:58" (2/3) ... [2022-11-03 03:46:59,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307484bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:46:59, skipping insertion in model container [2022-11-03 03:46:59,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:46:59" (3/3) ... [2022-11-03 03:46:59,267 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy6_ground-2.i [2022-11-03 03:46:59,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:46:59,287 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:46:59,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:46:59,343 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;@33fdff19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:46:59,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:46:59,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 03:46:59,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:59,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:59,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:59,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:59,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1366277802, now seen corresponding path program 1 times [2022-11-03 03:46:59,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:59,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44593496] [2022-11-03 03:46:59,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:59,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:59,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:59,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44593496] [2022-11-03 03:46:59,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44593496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:59,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:59,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:46:59,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163319281] [2022-11-03 03:46:59,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:59,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:59,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:59,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:59,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:59,752 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:59,815 INFO L93 Difference]: Finished difference Result 27 states and 43 transitions. [2022-11-03 03:46:59,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:59,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2022-11-03 03:46:59,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:59,829 INFO L225 Difference]: With dead ends: 27 [2022-11-03 03:46:59,829 INFO L226 Difference]: Without dead ends: 14 [2022-11-03 03:46:59,832 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 [2022-11-03 03:46:59,839 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:59,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:46:59,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-03 03:46:59,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-03 03:46:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 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) [2022-11-03 03:46:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2022-11-03 03:46:59,874 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 21 transitions. Word has length 11 [2022-11-03 03:46:59,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:59,875 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 21 transitions. [2022-11-03 03:46:59,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:46:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 21 transitions. [2022-11-03 03:46:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 03:46:59,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:59,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:59,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:46:59,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:59,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:59,879 INFO L85 PathProgramCache]: Analyzing trace with hash 649307915, now seen corresponding path program 1 times [2022-11-03 03:46:59,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:59,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711458373] [2022-11-03 03:46:59,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:59,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:47:00,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:00,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711458373] [2022-11-03 03:47:00,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711458373] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:00,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439344045] [2022-11-03 03:47:00,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:00,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:00,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:00,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:00,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:47:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:00,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:47:00,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:47:00,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:47:00,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439344045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:00,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:47:00,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-03 03:47:00,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975015457] [2022-11-03 03:47:00,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:00,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:00,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:00,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:00,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:47:00,295 INFO L87 Difference]: Start difference. First operand 14 states and 21 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2022-11-03 03:47:00,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:00,360 INFO L93 Difference]: Finished difference Result 30 states and 48 transitions. [2022-11-03 03:47:00,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:00,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) Word has length 12 [2022-11-03 03:47:00,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:00,361 INFO L225 Difference]: With dead ends: 30 [2022-11-03 03:47:00,361 INFO L226 Difference]: Without dead ends: 20 [2022-11-03 03:47:00,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:47:00,363 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:00,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:47:00,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-03 03:47:00,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-03 03:47:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:00,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2022-11-03 03:47:00,368 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 12 [2022-11-03 03:47:00,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:00,369 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2022-11-03 03:47:00,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2022-11-03 03:47:00,369 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2022-11-03 03:47:00,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:47:00,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:00,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:00,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:00,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:00,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:00,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:00,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2133447112, now seen corresponding path program 1 times [2022-11-03 03:47:00,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:00,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126373402] [2022-11-03 03:47:00,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:00,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:47:00,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:00,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126373402] [2022-11-03 03:47:00,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126373402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:00,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511065896] [2022-11-03 03:47:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:00,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:00,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:00,774 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:00,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:47:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:00,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:47:00,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:00,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:47:00,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:47:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:47:00,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511065896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:47:00,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1495743481] [2022-11-03 03:47:00,996 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 03:47:00,996 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:47:00,999 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:47:01,004 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:47:01,005 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:47:01,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:01,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:01,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:01,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:01,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:01,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:01,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:01,799 INFO L356 Elim1Store]: treesize reduction 735, result has 8.0 percent of original size [2022-11-03 03:47:01,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 159 treesize of output 193 [2022-11-03 03:47:01,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:01,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:01,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:01,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:01,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:01,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:01,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:01,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 43 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 52 [2022-11-03 03:47:02,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:02,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:47:02,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:02,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:02,604 INFO L356 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-03 03:47:02,606 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 4 case distinctions, treesize of input 642 treesize of output 641 [2022-11-03 03:47:03,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:47:03,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:03,392 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:03,393 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 25 treesize of output 25 [2022-11-03 03:47:03,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:03,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:03,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:03,495 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:03,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:03,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:03,597 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:03,598 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 25 treesize of output 25 [2022-11-03 03:47:03,662 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:03,663 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 15 treesize of output 15 [2022-11-03 03:47:03,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:03,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:03,808 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:47:03,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:47:04,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,035 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:04,035 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 25 treesize of output 25 [2022-11-03 03:47:04,073 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:04,076 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 15 treesize of output 15 [2022-11-03 03:47:04,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,207 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:47:04,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:47:04,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,313 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:04,317 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 25 treesize of output 25 [2022-11-03 03:47:04,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,353 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:04,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 03:47:04,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:04,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,430 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:04,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:04,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,504 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:04,504 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 25 treesize of output 25 [2022-11-03 03:47:04,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,562 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:04,563 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 25 treesize of output 25 [2022-11-03 03:47:04,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:04,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,629 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:04,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:04,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,693 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:04,693 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 25 treesize of output 25 [2022-11-03 03:47:04,734 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:04,735 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 15 treesize of output 15 [2022-11-03 03:47:04,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,850 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:47:04,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:47:04,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:04,956 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:04,956 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 25 treesize of output 25 [2022-11-03 03:47:04,980 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:47:05,355 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '319#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a7~0#1.base|) (+ |ULTIMATE.start_main_~#a7~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem17#1|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem17#1| |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:47:05,355 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:47:05,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:47:05,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 03:47:05,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132563644] [2022-11-03 03:47:05,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:47:05,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:47:05,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:05,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:47:05,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:47:05,357 INFO L87 Difference]: Start difference. First operand 20 states and 27 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:05,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:05,414 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2022-11-03 03:47:05,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:47:05,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 03:47:05,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:05,416 INFO L225 Difference]: With dead ends: 40 [2022-11-03 03:47:05,416 INFO L226 Difference]: Without dead ends: 23 [2022-11-03 03:47:05,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:47:05,417 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:05,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:47:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-03 03:47:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-03 03:47:05,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2022-11-03 03:47:05,422 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 18 [2022-11-03 03:47:05,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:05,422 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-11-03 03:47:05,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:05,423 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2022-11-03 03:47:05,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:47:05,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:05,423 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:05,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:05,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:05,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:05,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:05,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1638401661, now seen corresponding path program 2 times [2022-11-03 03:47:05,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:05,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19982980] [2022-11-03 03:47:05,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:05,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:47:05,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:05,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19982980] [2022-11-03 03:47:05,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19982980] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:05,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590693568] [2022-11-03 03:47:05,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:47:05,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:05,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:05,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:05,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:47:05,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 03:47:05,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:47:05,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:47:05,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:47:05,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:47:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:47:05,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590693568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:47:05,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [920978998] [2022-11-03 03:47:05,894 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 03:47:05,895 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:47:05,896 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:47:05,896 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:47:05,896 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:47:05,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:05,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:05,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:05,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:05,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:05,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:05,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:06,406 INFO L356 Elim1Store]: treesize reduction 735, result has 8.0 percent of original size [2022-11-03 03:47:06,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 159 treesize of output 193 [2022-11-03 03:47:06,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:06,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:06,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:06,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:06,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:06,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:06,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:06,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 43 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 52 [2022-11-03 03:47:06,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:06,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-03 03:47:06,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:06,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:06,877 INFO L356 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-03 03:47:06,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 652 treesize of output 640 [2022-11-03 03:47:07,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:47:07,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,148 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:07,149 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 25 treesize of output 25 [2022-11-03 03:47:07,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:07,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,206 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:07,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:07,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,281 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:07,282 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 25 treesize of output 25 [2022-11-03 03:47:07,335 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:07,335 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 15 treesize of output 15 [2022-11-03 03:47:07,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,457 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:47:07,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:47:07,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,589 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:07,589 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 25 treesize of output 25 [2022-11-03 03:47:07,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,619 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:07,624 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 25 treesize of output 25 [2022-11-03 03:47:07,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:07,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,694 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:07,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:07,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,747 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:07,747 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 25 treesize of output 25 [2022-11-03 03:47:07,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,786 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:07,786 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 25 treesize of output 25 [2022-11-03 03:47:07,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:07,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,844 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:07,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:07,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:07,918 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:07,918 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 25 treesize of output 25 [2022-11-03 03:47:07,982 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:07,983 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 15 treesize of output 15 [2022-11-03 03:47:08,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:08,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:08,091 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:47:08,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:47:08,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:08,174 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:08,175 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 25 treesize of output 25 [2022-11-03 03:47:08,202 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:08,202 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 15 treesize of output 15 [2022-11-03 03:47:08,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:08,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:08,307 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:47:08,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:47:08,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:08,384 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:08,384 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 25 treesize of output 25 [2022-11-03 03:47:08,404 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:47:08,877 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '563#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a7~0#1.base|) (+ |ULTIMATE.start_main_~#a7~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem17#1|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem17#1| |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:47:08,877 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:47:08,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:47:08,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-03 03:47:08,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474710259] [2022-11-03 03:47:08,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:47:08,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:47:08,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:08,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:47:08,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:47:08,879 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:08,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:08,990 INFO L93 Difference]: Finished difference Result 56 states and 86 transitions. [2022-11-03 03:47:08,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:47:08,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-03 03:47:08,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:08,991 INFO L225 Difference]: With dead ends: 56 [2022-11-03 03:47:08,992 INFO L226 Difference]: Without dead ends: 41 [2022-11-03 03:47:08,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:47:08,993 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:08,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:47:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-03 03:47:08,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-03 03:47:08,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:08,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-11-03 03:47:08,999 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 21 [2022-11-03 03:47:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:09,000 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-11-03 03:47:09,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-11-03 03:47:09,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 03:47:09,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:09,001 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:09,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:09,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:09,202 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:09,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:09,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1651690538, now seen corresponding path program 3 times [2022-11-03 03:47:09,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:09,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164312732] [2022-11-03 03:47:09,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:09,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 03:47:09,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:09,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164312732] [2022-11-03 03:47:09,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164312732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:09,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35925534] [2022-11-03 03:47:09,420 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 03:47:09,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:09,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:09,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:09,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:47:09,564 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 03:47:09,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:47:09,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:47:09,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 03:47:09,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:47:09,651 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 03:47:09,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35925534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:47:09,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1138755794] [2022-11-03 03:47:09,653 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 03:47:09,654 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:47:09,654 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:47:09,654 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:47:09,654 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:47:09,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:09,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:09,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:09,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:09,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:09,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:09,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:09,955 INFO L356 Elim1Store]: treesize reduction 517, result has 10.1 percent of original size [2022-11-03 03:47:09,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 74 [2022-11-03 03:47:10,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:10,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:10,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:10,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:10,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:10,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:10,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:10,445 INFO L356 Elim1Store]: treesize reduction 735, result has 8.0 percent of original size [2022-11-03 03:47:10,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 159 treesize of output 193 [2022-11-03 03:47:10,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:10,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:47:10,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:10,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:10,814 INFO L356 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-03 03:47:10,815 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 4 case distinctions, treesize of input 642 treesize of output 641 [2022-11-03 03:47:11,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:47:11,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,239 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:11,240 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 25 treesize of output 25 [2022-11-03 03:47:11,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:11,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,298 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:11,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:11,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,359 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:11,360 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 25 treesize of output 25 [2022-11-03 03:47:11,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,415 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:11,415 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 25 treesize of output 25 [2022-11-03 03:47:11,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,481 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:11,482 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 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:11,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,555 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:11,556 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 25 treesize of output 25 [2022-11-03 03:47:11,602 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:11,602 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 15 treesize of output 15 [2022-11-03 03:47:11,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,697 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:47:11,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:47:11,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,768 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:11,769 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 25 treesize of output 25 [2022-11-03 03:47:11,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,796 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:11,796 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 25 treesize of output 25 [2022-11-03 03:47:11,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:11,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,851 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:11,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:11,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:11,929 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:11,930 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 25 treesize of output 25 [2022-11-03 03:47:11,983 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:11,983 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 15 treesize of output 15 [2022-11-03 03:47:12,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:12,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:12,090 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:47:12,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:47:12,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:12,185 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:12,186 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 25 treesize of output 25 [2022-11-03 03:47:12,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:12,215 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:12,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 03:47:12,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:12,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:12,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:12,275 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:12,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:12,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:12,320 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:12,321 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 25 treesize of output 25 [2022-11-03 03:47:12,338 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:47:12,694 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '989#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a7~0#1.base|) (+ |ULTIMATE.start_main_~#a7~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem17#1|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem17#1| |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:47:12,694 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:47:12,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:47:12,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-03 03:47:12,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498748117] [2022-11-03 03:47:12,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:47:12,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:47:12,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:12,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:47:12,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:47:12,696 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:12,765 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2022-11-03 03:47:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:47:12,765 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 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 39 [2022-11-03 03:47:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:12,766 INFO L225 Difference]: With dead ends: 82 [2022-11-03 03:47:12,766 INFO L226 Difference]: Without dead ends: 47 [2022-11-03 03:47:12,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:47:12,767 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:12,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:47:12,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-03 03:47:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-03 03:47:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2022-11-03 03:47:12,774 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 39 [2022-11-03 03:47:12,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:12,774 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2022-11-03 03:47:12,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2022-11-03 03:47:12,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 03:47:12,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:12,776 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:12,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:12,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:12,978 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:12,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:12,978 INFO L85 PathProgramCache]: Analyzing trace with hash 277696438, now seen corresponding path program 4 times [2022-11-03 03:47:12,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:12,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319355794] [2022-11-03 03:47:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:12,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 03:47:13,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:13,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319355794] [2022-11-03 03:47:13,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319355794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:13,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630310400] [2022-11-03 03:47:13,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 03:47:13,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:13,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:13,330 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:13,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:47:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:13,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:47:13,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 03:47:13,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:47:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 03:47:13,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630310400] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:47:13,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2137992491] [2022-11-03 03:47:13,724 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 03:47:13,724 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:47:13,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:47:13,724 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:47:13,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:47:13,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:13,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:13,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:13,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:13,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:13,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:13,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:14,155 INFO L356 Elim1Store]: treesize reduction 735, result has 8.0 percent of original size [2022-11-03 03:47:14,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 159 treesize of output 193 [2022-11-03 03:47:14,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:14,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:14,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:14,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:14,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:14,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:14,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:14,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 43 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 52 [2022-11-03 03:47:14,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:14,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:47:14,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:14,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:14,515 INFO L356 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-03 03:47:14,515 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 4 case distinctions, treesize of input 642 treesize of output 641 [2022-11-03 03:47:14,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:47:14,901 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:14,902 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 15 treesize of output 15 [2022-11-03 03:47:14,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:14,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:14,985 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:47:14,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:47:15,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,091 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:15,091 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 25 treesize of output 25 [2022-11-03 03:47:15,117 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:15,117 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 15 treesize of output 15 [2022-11-03 03:47:15,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,207 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:47:15,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:47:15,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,274 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:15,274 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 25 treesize of output 25 [2022-11-03 03:47:15,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,301 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:15,302 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 25 treesize of output 25 [2022-11-03 03:47:15,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:15,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,361 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:15,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:15,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,412 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:15,413 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 25 treesize of output 25 [2022-11-03 03:47:15,440 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:15,440 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 15 treesize of output 15 [2022-11-03 03:47:15,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,551 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:47:15,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:47:15,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,622 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:15,622 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 25 treesize of output 25 [2022-11-03 03:47:15,651 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:15,651 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 15 treesize of output 15 [2022-11-03 03:47:15,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,738 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:47:15,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:47:15,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,822 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:15,822 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 25 treesize of output 25 [2022-11-03 03:47:15,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,849 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:15,850 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 25 treesize of output 25 [2022-11-03 03:47:15,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:15,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,912 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:15,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:15,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:15,960 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:15,960 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 25 treesize of output 25 [2022-11-03 03:47:15,979 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:47:16,291 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1527#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a7~0#1.base|) (+ |ULTIMATE.start_main_~#a7~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem17#1|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem17#1| |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:47:16,291 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:47:16,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:47:16,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-11-03 03:47:16,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538747983] [2022-11-03 03:47:16,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:47:16,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 03:47:16,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:16,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 03:47:16,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=550, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:47:16,294 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 25 states, 25 states have (on average 1.64) internal successors, (41), 24 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:16,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:16,386 INFO L93 Difference]: Finished difference Result 94 states and 119 transitions. [2022-11-03 03:47:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:47:16,387 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.64) internal successors, (41), 24 states have internal predecessors, (41), 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 45 [2022-11-03 03:47:16,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:16,388 INFO L225 Difference]: With dead ends: 94 [2022-11-03 03:47:16,388 INFO L226 Difference]: Without dead ends: 59 [2022-11-03 03:47:16,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=320, Invalid=550, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:47:16,390 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:16,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:47:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-03 03:47:16,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-03 03:47:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 58 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:16,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2022-11-03 03:47:16,397 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 45 [2022-11-03 03:47:16,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:16,397 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2022-11-03 03:47:16,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.64) internal successors, (41), 24 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:16,398 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2022-11-03 03:47:16,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-03 03:47:16,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:16,399 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:16,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:16,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:16,610 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:16,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1284919158, now seen corresponding path program 5 times [2022-11-03 03:47:16,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:16,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705085559] [2022-11-03 03:47:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:16,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:17,417 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 03:47:17,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:17,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705085559] [2022-11-03 03:47:17,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705085559] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:17,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769178208] [2022-11-03 03:47:17,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:47:17,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:17,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:17,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:17,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:47:17,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 03:47:17,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:47:17,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:47:17,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2022-11-03 03:47:17,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:47:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2022-11-03 03:47:17,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769178208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:47:17,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1912536519] [2022-11-03 03:47:17,980 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 03:47:17,980 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:47:17,981 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:47:17,981 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:47:17,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:47:18,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,270 INFO L356 Elim1Store]: treesize reduction 517, result has 10.1 percent of original size [2022-11-03 03:47:18,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 74 [2022-11-03 03:47:18,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,718 INFO L356 Elim1Store]: treesize reduction 735, result has 8.0 percent of original size [2022-11-03 03:47:18,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 159 treesize of output 193 [2022-11-03 03:47:18,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:18,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:47:19,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:19,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:19,095 INFO L356 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-03 03:47:19,096 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 4 case distinctions, treesize of input 642 treesize of output 641 [2022-11-03 03:47:19,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:47:19,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:19,555 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:19,556 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 25 treesize of output 25 [2022-11-03 03:47:19,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:19,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:19,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:19,607 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:19,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:19,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:19,690 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:19,691 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 25 treesize of output 25 [2022-11-03 03:47:19,739 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:19,739 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 15 treesize of output 15 [2022-11-03 03:47:19,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:19,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:19,822 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:47:19,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:47:19,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:19,889 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:19,889 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 25 treesize of output 25 [2022-11-03 03:47:19,917 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:19,918 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 15 treesize of output 15 [2022-11-03 03:47:19,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:19,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:20,008 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:47:20,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:47:20,107 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:20,117 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:20,117 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 25 treesize of output 25 [2022-11-03 03:47:20,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:20,144 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:20,145 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 25 treesize of output 25 [2022-11-03 03:47:20,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:20,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:20,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:20,196 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:20,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:20,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:20,259 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:20,259 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 25 treesize of output 25 [2022-11-03 03:47:20,307 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:20,308 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 15 treesize of output 15 [2022-11-03 03:47:20,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:20,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:20,424 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:47:20,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:47:20,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:20,525 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:20,525 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 25 treesize of output 25 [2022-11-03 03:47:20,550 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:20,551 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 15 treesize of output 15 [2022-11-03 03:47:20,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:20,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:20,648 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:47:20,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:47:20,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:20,710 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:20,711 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 25 treesize of output 25 [2022-11-03 03:47:20,728 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:47:21,192 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2195#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a7~0#1.base|) (+ |ULTIMATE.start_main_~#a7~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem17#1|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem17#1| |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:47:21,192 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:47:21,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:47:21,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 35 [2022-11-03 03:47:21,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129308754] [2022-11-03 03:47:21,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:47:21,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-03 03:47:21,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:21,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-03 03:47:21,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 03:47:21,195 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:21,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:21,449 INFO L93 Difference]: Finished difference Result 131 states and 181 transitions. [2022-11-03 03:47:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-03 03:47:21,450 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 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 57 [2022-11-03 03:47:21,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:21,454 INFO L225 Difference]: With dead ends: 131 [2022-11-03 03:47:21,455 INFO L226 Difference]: Without dead ends: 96 [2022-11-03 03:47:21,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 03:47:21,457 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:21,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:47:21,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-03 03:47:21,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-11-03 03:47:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0842105263157895) internal successors, (103), 95 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2022-11-03 03:47:21,482 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 57 [2022-11-03 03:47:21,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:21,484 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2022-11-03 03:47:21,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2022-11-03 03:47:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-03 03:47:21,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:21,490 INFO L195 NwaCegarLoop]: trace histogram [23, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:21,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:21,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 03:47:21,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:21,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash 549872075, now seen corresponding path program 6 times [2022-11-03 03:47:21,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:21,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704523181] [2022-11-03 03:47:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:21,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-03 03:47:22,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:22,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704523181] [2022-11-03 03:47:22,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704523181] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:22,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218611809] [2022-11-03 03:47:22,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 03:47:22,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:22,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:22,783 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:22,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:47:23,063 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 03:47:23,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:47:23,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 03:47:23,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:23,151 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-03 03:47:23,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:47:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-03 03:47:23,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218611809] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:47:23,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1339387248] [2022-11-03 03:47:23,980 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 03:47:23,981 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:47:23,981 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:47:23,981 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:47:23,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:47:24,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,298 INFO L356 Elim1Store]: treesize reduction 517, result has 10.1 percent of original size [2022-11-03 03:47:24,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 74 [2022-11-03 03:47:24,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,749 INFO L356 Elim1Store]: treesize reduction 735, result has 8.0 percent of original size [2022-11-03 03:47:24,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 159 treesize of output 193 [2022-11-03 03:47:24,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:24,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-03 03:47:25,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:25,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:25,221 INFO L356 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-03 03:47:25,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 652 treesize of output 640 [2022-11-03 03:47:25,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:47:25,485 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:25,486 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 15 treesize of output 15 [2022-11-03 03:47:25,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:25,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:25,567 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:47:25,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:47:25,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:25,629 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:25,629 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 25 treesize of output 25 [2022-11-03 03:47:25,653 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:25,653 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 15 treesize of output 15 [2022-11-03 03:47:25,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:25,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:25,739 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:47:25,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:47:25,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:25,804 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:25,804 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 25 treesize of output 25 [2022-11-03 03:47:25,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:25,831 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:25,832 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 25 treesize of output 25 [2022-11-03 03:47:25,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:25,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:25,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:25,891 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:25,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:25,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:25,937 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:25,938 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 25 treesize of output 25 [2022-11-03 03:47:25,972 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:25,972 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 15 treesize of output 15 [2022-11-03 03:47:26,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:26,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:26,044 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:47:26,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:47:26,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:26,129 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:26,129 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 25 treesize of output 25 [2022-11-03 03:47:26,155 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:26,156 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 15 treesize of output 15 [2022-11-03 03:47:26,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:26,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:26,246 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:47:26,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:47:26,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:26,341 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:26,342 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 25 treesize of output 25 [2022-11-03 03:47:26,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:26,372 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:26,373 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 25 treesize of output 25 [2022-11-03 03:47:26,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:26,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:26,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:26,422 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:26,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:26,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:26,467 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:26,468 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 25 treesize of output 25 [2022-11-03 03:47:26,481 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:47:26,934 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3249#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a7~0#1.base|) (+ |ULTIMATE.start_main_~#a7~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem17#1|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem17#1| |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:47:26,935 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:47:26,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:47:26,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2022-11-03 03:47:26,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727268687] [2022-11-03 03:47:26,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:47:26,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-03 03:47:26,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:26,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-03 03:47:26,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=1785, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 03:47:26,943 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand has 51 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:27,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:27,088 INFO L93 Difference]: Finished difference Result 192 states and 230 transitions. [2022-11-03 03:47:27,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-03 03:47:27,089 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 50 states have internal predecessors, (67), 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 94 [2022-11-03 03:47:27,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:27,090 INFO L225 Difference]: With dead ends: 192 [2022-11-03 03:47:27,090 INFO L226 Difference]: Without dead ends: 121 [2022-11-03 03:47:27,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1295, Invalid=1785, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 03:47:27,094 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:27,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:47:27,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-03 03:47:27,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-11-03 03:47:27,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0666666666666667) internal successors, (128), 120 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:27,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 128 transitions. [2022-11-03 03:47:27,119 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 128 transitions. Word has length 94 [2022-11-03 03:47:27,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:27,120 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 128 transitions. [2022-11-03 03:47:27,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:27,120 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 128 transitions. [2022-11-03 03:47:27,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-03 03:47:27,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:27,123 INFO L195 NwaCegarLoop]: trace histogram [48, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:27,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:27,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:27,338 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:27,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:27,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1695148682, now seen corresponding path program 7 times [2022-11-03 03:47:27,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:27,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413375055] [2022-11-03 03:47:27,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:27,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-03 03:47:30,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:30,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413375055] [2022-11-03 03:47:30,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413375055] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:30,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031886960] [2022-11-03 03:47:30,324 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 03:47:30,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:30,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:30,325 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:30,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 03:47:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:30,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-03 03:47:30,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-03 03:47:30,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:47:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-03 03:47:33,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031886960] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:47:33,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1130659933] [2022-11-03 03:47:33,873 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 03:47:33,873 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:47:33,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:47:33,874 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:47:33,874 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:47:33,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:33,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,163 INFO L356 Elim1Store]: treesize reduction 517, result has 10.1 percent of original size [2022-11-03 03:47:34,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 74 [2022-11-03 03:47:34,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,612 INFO L356 Elim1Store]: treesize reduction 735, result has 8.0 percent of original size [2022-11-03 03:47:34,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 159 treesize of output 193 [2022-11-03 03:47:34,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:47:34,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:34,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:34,893 INFO L356 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-03 03:47:34,893 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 4 case distinctions, treesize of input 642 treesize of output 641 [2022-11-03 03:47:35,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:47:35,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:35,276 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:35,276 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 25 treesize of output 25 [2022-11-03 03:47:35,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:35,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:35,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:35,326 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:35,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:35,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:35,389 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:35,389 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 25 treesize of output 25 [2022-11-03 03:47:35,436 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:35,436 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 15 treesize of output 15 [2022-11-03 03:47:35,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:35,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:35,540 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:47:35,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:47:35,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:35,617 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:35,618 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 25 treesize of output 25 [2022-11-03 03:47:35,644 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:35,644 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 15 treesize of output 15 [2022-11-03 03:47:35,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:35,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:35,736 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:47:35,736 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:47:35,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:35,806 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:35,806 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 25 treesize of output 25 [2022-11-03 03:47:35,832 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:35,832 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 15 treesize of output 15 [2022-11-03 03:47:35,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:35,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:35,940 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:47:35,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:47:36,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:36,046 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:36,046 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 25 treesize of output 25 [2022-11-03 03:47:36,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:36,075 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:36,075 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 25 treesize of output 25 [2022-11-03 03:47:36,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:36,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:36,119 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:36,120 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 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:36,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:36,165 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:36,166 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 25 treesize of output 25 [2022-11-03 03:47:36,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:36,194 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:36,195 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 25 treesize of output 25 [2022-11-03 03:47:36,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:36,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:36,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:36,247 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:36,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:36,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:36,292 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:36,292 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 25 treesize of output 25 [2022-11-03 03:47:36,312 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:47:36,907 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4675#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a7~0#1.base|) (+ |ULTIMATE.start_main_~#a7~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem17#1|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem17#1| |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:47:36,907 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:47:36,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:47:36,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 100 [2022-11-03 03:47:36,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567004531] [2022-11-03 03:47:36,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:47:36,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-11-03 03:47:36,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:36,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-11-03 03:47:36,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5070, Invalid=6060, Unknown=0, NotChecked=0, Total=11130 [2022-11-03 03:47:36,912 INFO L87 Difference]: Start difference. First operand 121 states and 128 transitions. Second operand has 101 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 100 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:37,135 INFO L93 Difference]: Finished difference Result 242 states and 305 transitions. [2022-11-03 03:47:37,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-03 03:47:37,136 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 100 states have internal predecessors, (117), 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 119 [2022-11-03 03:47:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:37,137 INFO L225 Difference]: With dead ends: 242 [2022-11-03 03:47:37,137 INFO L226 Difference]: Without dead ends: 171 [2022-11-03 03:47:37,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=5070, Invalid=6060, Unknown=0, NotChecked=0, Total=11130 [2022-11-03 03:47:37,143 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:37,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:47:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-03 03:47:37,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-03 03:47:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.0470588235294118) internal successors, (178), 170 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 178 transitions. [2022-11-03 03:47:37,160 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 178 transitions. Word has length 119 [2022-11-03 03:47:37,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:37,162 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 178 transitions. [2022-11-03 03:47:37,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 100 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:37,163 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 178 transitions. [2022-11-03 03:47:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-03 03:47:37,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:37,175 INFO L195 NwaCegarLoop]: trace histogram [98, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:37,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:37,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:37,376 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:37,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:37,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1457906922, now seen corresponding path program 8 times [2022-11-03 03:47:37,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:37,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197757565] [2022-11-03 03:47:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:37,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5181 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-03 03:47:45,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:45,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197757565] [2022-11-03 03:47:45,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197757565] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:47:45,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798563210] [2022-11-03 03:47:45,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:47:45,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:47:45,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:45,333 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:47:45,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 03:47:52,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-03 03:47:52,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:47:52,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:47:52,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:47:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5181 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5126 trivial. 0 not checked. [2022-11-03 03:47:52,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:47:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5181 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5126 trivial. 0 not checked. [2022-11-03 03:47:53,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798563210] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:47:53,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [578804388] [2022-11-03 03:47:53,429 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 03:47:53,429 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:47:53,430 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:47:53,430 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:47:53,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:47:53,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,848 INFO L356 Elim1Store]: treesize reduction 735, result has 8.0 percent of original size [2022-11-03 03:47:53,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 159 treesize of output 193 [2022-11-03 03:47:53,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 43 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 52 [2022-11-03 03:47:53,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:53,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-03 03:47:54,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:54,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:54,237 INFO L356 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-03 03:47:54,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 652 treesize of output 640 [2022-11-03 03:47:54,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:47:54,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:54,450 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:54,450 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 25 treesize of output 25 [2022-11-03 03:47:54,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:54,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:54,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:54,499 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:54,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:54,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:54,564 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:54,564 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 25 treesize of output 25 [2022-11-03 03:47:54,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:54,613 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:54,614 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 25 treesize of output 25 [2022-11-03 03:47:54,651 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:54,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:54,666 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:54,667 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 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:54,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:54,721 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:54,721 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 25 treesize of output 25 [2022-11-03 03:47:54,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:54,776 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:54,776 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 25 treesize of output 25 [2022-11-03 03:47:54,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:54,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:54,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:54,826 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:54,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:54,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:54,871 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:54,871 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 25 treesize of output 25 [2022-11-03 03:47:54,899 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:54,900 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 15 treesize of output 15 [2022-11-03 03:47:54,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:54,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:54,987 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:47:54,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:47:55,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:55,082 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:55,082 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 25 treesize of output 25 [2022-11-03 03:47:55,112 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:47:55,112 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 15 treesize of output 15 [2022-11-03 03:47:55,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:55,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:55,197 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:47:55,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:47:55,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:55,278 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:55,279 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 25 treesize of output 25 [2022-11-03 03:47:55,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:55,307 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:55,308 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 25 treesize of output 25 [2022-11-03 03:47:55,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:47:55,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:55,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:55,359 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:47:55,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:47:55,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:47:55,400 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:47:55,401 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 25 treesize of output 25 [2022-11-03 03:47:55,417 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:47:56,413 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6623#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a7~0#1.base|) (+ |ULTIMATE.start_main_~#a7~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem17#1|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem17#1| |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:47:56,413 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:47:56,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:47:56,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 13, 13] total 123 [2022-11-03 03:47:56,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732424033] [2022-11-03 03:47:56,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:47:56,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-11-03 03:47:56,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:56,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-11-03 03:47:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5345, Invalid=10911, Unknown=0, NotChecked=0, Total=16256 [2022-11-03 03:47:56,422 INFO L87 Difference]: Start difference. First operand 171 states and 178 transitions. Second operand has 123 states, 123 states have (on average 1.146341463414634) internal successors, (141), 123 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:57,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:57,044 INFO L93 Difference]: Finished difference Result 315 states and 401 transitions. [2022-11-03 03:47:57,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-11-03 03:47:57,045 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.146341463414634) internal successors, (141), 123 states have internal predecessors, (141), 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 169 [2022-11-03 03:47:57,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:57,046 INFO L225 Difference]: With dead ends: 315 [2022-11-03 03:47:57,046 INFO L226 Difference]: Without dead ends: 244 [2022-11-03 03:47:57,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2801 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5345, Invalid=10911, Unknown=0, NotChecked=0, Total=16256 [2022-11-03 03:47:57,051 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:57,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:47:57,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-03 03:47:57,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-03 03:47:57,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.0329218106995885) internal successors, (251), 243 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:57,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 251 transitions. [2022-11-03 03:47:57,063 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 251 transitions. Word has length 169 [2022-11-03 03:47:57,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:57,063 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 251 transitions. [2022-11-03 03:47:57,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.146341463414634) internal successors, (141), 123 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:47:57,064 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 251 transitions. [2022-11-03 03:47:57,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-03 03:47:57,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:57,066 INFO L195 NwaCegarLoop]: trace histogram [99, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:57,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:47:57,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 03:47:57,290 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:57,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:57,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1254912203, now seen corresponding path program 9 times [2022-11-03 03:47:57,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:57,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581415329] [2022-11-03 03:47:57,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:57,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:05,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6468 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2022-11-03 03:48:05,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:05,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581415329] [2022-11-03 03:48:05,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581415329] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:48:05,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776494507] [2022-11-03 03:48:05,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 03:48:05,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:48:05,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:48:05,143 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:48:05,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 03:48:05,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 03:48:05,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:48:05,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-03 03:48:05,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:05,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6468 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2022-11-03 03:48:05,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:48:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6468 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2022-11-03 03:48:17,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776494507] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:48:17,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1941466988] [2022-11-03 03:48:17,563 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 03:48:17,563 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:48:17,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:48:17,563 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:48:17,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:48:17,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:17,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:17,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:17,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:17,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:17,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:17,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:17,827 INFO L356 Elim1Store]: treesize reduction 517, result has 10.1 percent of original size [2022-11-03 03:48:17,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 74 [2022-11-03 03:48:17,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:17,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:17,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:17,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:17,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:17,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:17,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:18,267 INFO L356 Elim1Store]: treesize reduction 735, result has 8.0 percent of original size [2022-11-03 03:48:18,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 159 treesize of output 193 [2022-11-03 03:48:18,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:18,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-03 03:48:18,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:18,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:18,574 INFO L356 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-03 03:48:18,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 652 treesize of output 640 [2022-11-03 03:48:18,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:48:18,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:18,766 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:48:18,767 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 25 treesize of output 25 [2022-11-03 03:48:18,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:18,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:18,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:18,809 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:48:18,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:48:18,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:18,879 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:48:18,880 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 25 treesize of output 25 [2022-11-03 03:48:18,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:18,926 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:48:18,926 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 25 treesize of output 25 [2022-11-03 03:48:18,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:18,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:18,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:18,971 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:48:18,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:48:19,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,031 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:48:19,032 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 25 treesize of output 25 [2022-11-03 03:48:19,077 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:48:19,077 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 15 treesize of output 15 [2022-11-03 03:48:19,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,159 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:48:19,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:48:19,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,238 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:48:19,239 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 25 treesize of output 25 [2022-11-03 03:48:19,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,268 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:48:19,268 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 25 treesize of output 25 [2022-11-03 03:48:19,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:19,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,309 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:48:19,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:48:19,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,372 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:48:19,372 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 25 treesize of output 25 [2022-11-03 03:48:19,412 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:48:19,412 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 15 treesize of output 15 [2022-11-03 03:48:19,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,495 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:48:19,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:48:19,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,568 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:48:19,568 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 25 treesize of output 25 [2022-11-03 03:48:19,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,598 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:48:19,599 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 25 treesize of output 25 [2022-11-03 03:48:19,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:48:19,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,652 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:48:19,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:48:19,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:48:19,697 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:48:19,697 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 25 treesize of output 25 [2022-11-03 03:48:19,711 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:48:20,679 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9381#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a7~0#1.base|) (+ |ULTIMATE.start_main_~#a7~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem17#1|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem17#1| |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:48:20,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:48:20,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:48:20,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 202 [2022-11-03 03:48:20,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369646259] [2022-11-03 03:48:20,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:48:20,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2022-11-03 03:48:20,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:48:20,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2022-11-03 03:48:20,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20523, Invalid=22533, Unknown=0, NotChecked=0, Total=43056 [2022-11-03 03:48:20,691 INFO L87 Difference]: Start difference. First operand 244 states and 251 transitions. Second operand has 203 states, 203 states have (on average 1.0788177339901477) internal successors, (219), 202 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:21,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:48:21,254 INFO L93 Difference]: Finished difference Result 488 states and 602 transitions. [2022-11-03 03:48:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-11-03 03:48:21,255 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 1.0788177339901477) internal successors, (219), 202 states have internal predecessors, (219), 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 242 [2022-11-03 03:48:21,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:48:21,257 INFO L225 Difference]: With dead ends: 488 [2022-11-03 03:48:21,257 INFO L226 Difference]: Without dead ends: 345 [2022-11-03 03:48:21,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1896 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=20523, Invalid=22533, Unknown=0, NotChecked=0, Total=43056 [2022-11-03 03:48:21,262 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:48:21,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:48:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-03 03:48:21,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-11-03 03:48:21,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.0232558139534884) internal successors, (352), 344 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 352 transitions. [2022-11-03 03:48:21,276 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 352 transitions. Word has length 242 [2022-11-03 03:48:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:48:21,277 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 352 transitions. [2022-11-03 03:48:21,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 1.0788177339901477) internal successors, (219), 202 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:48:21,278 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 352 transitions. [2022-11-03 03:48:21,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-03 03:48:21,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:48:21,283 INFO L195 NwaCegarLoop]: trace histogram [200, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:48:21,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:48:21,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 03:48:21,510 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:48:21,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:48:21,510 INFO L85 PathProgramCache]: Analyzing trace with hash -843369290, now seen corresponding path program 10 times [2022-11-03 03:48:21,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:48:21,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141044374] [2022-11-03 03:48:21,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:48:21,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:48:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 21618 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2022-11-03 03:48:47,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:48:47,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141044374] [2022-11-03 03:48:47,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141044374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:48:47,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813074724] [2022-11-03 03:48:47,602 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 03:48:47,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:48:47,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:48:47,603 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:48:47,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 03:48:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:48:48,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 202 conjunts are in the unsatisfiable core [2022-11-03 03:48:48,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:48:48,744 INFO L134 CoverageAnalysis]: Checked inductivity of 21618 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2022-11-03 03:48:48,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:49:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 21618 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2022-11-03 03:49:35,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813074724] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:49:35,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [922997651] [2022-11-03 03:49:35,777 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 03:49:35,777 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:49:35,777 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:49:35,778 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:49:35,778 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:49:35,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:35,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:35,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:35,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:35,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:35,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:35,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:36,075 INFO L356 Elim1Store]: treesize reduction 517, result has 10.1 percent of original size [2022-11-03 03:49:36,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 74 [2022-11-03 03:49:36,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:36,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:36,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:36,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:36,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:36,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:36,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:36,480 INFO L356 Elim1Store]: treesize reduction 735, result has 8.0 percent of original size [2022-11-03 03:49:36,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 159 treesize of output 193 [2022-11-03 03:49:36,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:36,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 03:49:36,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:36,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:36,844 INFO L356 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-03 03:49:36,845 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 4 case distinctions, treesize of input 642 treesize of output 641 [2022-11-03 03:49:37,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 03:49:37,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,254 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:49:37,255 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 25 treesize of output 25 [2022-11-03 03:49:37,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:37,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,300 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:49:37,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:49:37,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,361 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:49:37,366 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 25 treesize of output 25 [2022-11-03 03:49:37,410 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:49:37,410 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 15 treesize of output 15 [2022-11-03 03:49:37,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,496 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:49:37,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:49:37,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,565 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:49:37,565 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 25 treesize of output 25 [2022-11-03 03:49:37,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,601 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:49:37,602 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 25 treesize of output 25 [2022-11-03 03:49:37,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:37,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,646 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:49:37,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:49:37,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,698 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:49:37,699 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 25 treesize of output 25 [2022-11-03 03:49:37,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,724 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:49:37,725 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 25 treesize of output 25 [2022-11-03 03:49:37,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:49:37,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,779 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 03:49:37,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 03:49:37,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,842 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:49:37,843 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 25 treesize of output 25 [2022-11-03 03:49:37,890 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:49:37,890 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 15 treesize of output 15 [2022-11-03 03:49:37,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:37,979 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 03:49:37,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 03:49:38,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:38,058 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:49:38,058 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 25 treesize of output 25 [2022-11-03 03:49:38,087 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 03:49:38,087 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 15 treesize of output 15 [2022-11-03 03:49:38,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:38,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:38,175 INFO L356 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-11-03 03:49:38,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 129 [2022-11-03 03:49:38,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:49:38,269 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 03:49:38,269 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 25 treesize of output 25 [2022-11-03 03:49:38,283 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:49:39,623 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13495#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a7~0#1.base|) (+ |ULTIMATE.start_main_~#a7~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4))) |ULTIMATE.start_main_#t~mem17#1|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem17#1| |ULTIMATE.start_main_#t~mem16#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_#t~mem16#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:49:39,623 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:49:39,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:49:39,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202, 202] total 404 [2022-11-03 03:49:39,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503504559] [2022-11-03 03:49:39,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:49:39,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2022-11-03 03:49:39,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:39,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2022-11-03 03:49:39,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81830, Invalid=85860, Unknown=0, NotChecked=0, Total=167690 [2022-11-03 03:49:39,652 INFO L87 Difference]: Start difference. First operand 345 states and 352 transitions. Second operand has 405 states, 405 states have (on average 1.039506172839506) internal successors, (421), 404 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:42,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:49:42,596 INFO L93 Difference]: Finished difference Result 690 states and 905 transitions. [2022-11-03 03:49:42,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2022-11-03 03:49:42,602 INFO L78 Accepts]: Start accepts. Automaton has has 405 states, 405 states have (on average 1.039506172839506) internal successors, (421), 404 states have internal predecessors, (421), 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 343 [2022-11-03 03:49:42,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:49:42,605 INFO L225 Difference]: With dead ends: 690 [2022-11-03 03:49:42,605 INFO L226 Difference]: Without dead ends: 547 [2022-11-03 03:49:42,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1229 GetRequests, 821 SyntacticMatches, 0 SemanticMatches, 408 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 63.4s TimeCoverageRelationStatistics Valid=81830, Invalid=85860, Unknown=0, NotChecked=0, Total=167690 [2022-11-03 03:49:42,616 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:49:42,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:49:42,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-11-03 03:49:42,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2022-11-03 03:49:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 1.0146520146520146) internal successors, (554), 546 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:42,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 554 transitions. [2022-11-03 03:49:42,640 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 554 transitions. Word has length 343 [2022-11-03 03:49:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:49:42,640 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 554 transitions. [2022-11-03 03:49:42,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 405 states, 405 states have (on average 1.039506172839506) internal successors, (421), 404 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:49:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 554 transitions. [2022-11-03 03:49:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2022-11-03 03:49:42,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:42,654 INFO L195 NwaCegarLoop]: trace histogram [402, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:49:42,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:49:42,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:49:42,882 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:49:42,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:42,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1817148970, now seen corresponding path program 11 times [2022-11-03 03:49:42,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:42,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639667129] [2022-11-03 03:49:42,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:42,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 82521 backedges. 0 proven. 81003 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2022-11-03 03:51:30,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:30,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639667129] [2022-11-03 03:51:30,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639667129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:51:30,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006470548] [2022-11-03 03:51:30,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:51:30,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:51:30,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:30,022 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:51:30,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_002ac36c-62e1-4048-b02b-ca58f8b7844f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 04:00:41,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-03 04:00:41,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:00:42,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-03 04:00:42,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 82521 backedges. 468 proven. 253 refuted. 0 times theorem prover too weak. 81800 trivial. 0 not checked. [2022-11-03 04:00:46,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:00:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 82521 backedges. 0 proven. 470 refuted. 0 times theorem prover too weak. 82051 trivial. 0 not checked. [2022-11-03 04:00:52,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006470548] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:00:52,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2010299451] [2022-11-03 04:00:52,116 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-03 04:00:52,116 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:00:52,117 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:00:52,117 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:00:52,117 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:00:52,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,402 INFO L356 Elim1Store]: treesize reduction 517, result has 10.1 percent of original size [2022-11-03 04:00:52,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 74 [2022-11-03 04:00:52,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,803 INFO L356 Elim1Store]: treesize reduction 735, result has 8.0 percent of original size [2022-11-03 04:00:52,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 41 case distinctions, treesize of input 159 treesize of output 193 [2022-11-03 04:00:52,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-03 04:00:53,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:53,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:53,179 INFO L356 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-03 04:00:53,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 652 treesize of output 640 [2022-11-03 04:00:53,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 04:00:53,382 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:00:53,382 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 15 treesize of output 15 [2022-11-03 04:00:53,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:53,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:53,455 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:00:53,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 04:00:53,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:53,523 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:53,524 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 25 treesize of output 25 [2022-11-03 04:00:53,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:53,552 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:53,552 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 25 treesize of output 25 [2022-11-03 04:00:53,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:53,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:53,593 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:00:53,594 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 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 04:00:53,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:53,652 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:53,653 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 25 treesize of output 25 [2022-11-03 04:00:53,694 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:00:53,694 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 15 treesize of output 15 [2022-11-03 04:00:53,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:53,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:53,767 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:00:53,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 04:00:53,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:53,823 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:53,824 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 25 treesize of output 25 [2022-11-03 04:00:53,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:53,847 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:53,848 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 25 treesize of output 25 [2022-11-03 04:00:53,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:53,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:53,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:53,892 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:00:53,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 04:00:53,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:53,949 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:53,949 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 25 treesize of output 25 [2022-11-03 04:00:53,991 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:00:53,992 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 15 treesize of output 15 [2022-11-03 04:00:54,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:54,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:54,070 INFO L356 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-11-03 04:00:54,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 119 [2022-11-03 04:00:54,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:54,123 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:54,123 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 25 treesize of output 25 [2022-11-03 04:00:54,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:54,178 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:54,178 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 25 treesize of output 25 [2022-11-03 04:00:54,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:54,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:54,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:54,240 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-03 04:00:54,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 115 [2022-11-03 04:00:54,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:54,289 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:00:54,289 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 25 treesize of output 25 [2022-11-03 04:00:54,307 INFO L180 IcfgInterpreter]: Interpretation finished