./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/invert_string-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/invert_string-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca98535e808a51f7cfa7d21c9d33f259821212a6554e27f29c2bddd9197c0249 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:17:59,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:17:59,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:17:59,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:17:59,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:17:59,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:17:59,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:17:59,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:17:59,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:17:59,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:17:59,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:17:59,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:17:59,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:17:59,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:17:59,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:17:59,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:17:59,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:17:59,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:17:59,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:17:59,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:17:59,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:17:59,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:17:59,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:17:59,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:17:59,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:17:59,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:17:59,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:17:59,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:17:59,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:17:59,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:17:59,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:17:59,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:17:59,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:17:59,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:17:59,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:17:59,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:17:59,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:17:59,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:17:59,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:17:59,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:17:59,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:17:59,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:18:00,001 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:18:00,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:18:00,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:18:00,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:18:00,002 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:18:00,002 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:18:00,002 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:18:00,003 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:18:00,003 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:18:00,003 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:18:00,003 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:18:00,003 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:18:00,004 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:18:00,004 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:18:00,004 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:18:00,004 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:18:00,005 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:18:00,005 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:18:00,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:18:00,006 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:18:00,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:18:00,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:18:00,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:18:00,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:18:00,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:18:00,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:18:00,007 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:18:00,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:18:00,011 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:18:00,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:18:00,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:18:00,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:18:00,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:18:00,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:18:00,013 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:18:00,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:18:00,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:18:00,015 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:18:00,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:18:00,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:18:00,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:18:00,017 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_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca98535e808a51f7cfa7d21c9d33f259821212a6554e27f29c2bddd9197c0249 [2022-10-17 17:18:00,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:18:00,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:18:00,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:18:00,289 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:18:00,290 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:18:00,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/loops/invert_string-3.c [2022-10-17 17:18:00,363 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/data/038b15dca/b95b31d456f04cc393a6819e78cc0df8/FLAG06b91be77 [2022-10-17 17:18:00,789 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:18:00,790 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/sv-benchmarks/c/loops/invert_string-3.c [2022-10-17 17:18:00,797 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/data/038b15dca/b95b31d456f04cc393a6819e78cc0df8/FLAG06b91be77 [2022-10-17 17:18:01,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/data/038b15dca/b95b31d456f04cc393a6819e78cc0df8 [2022-10-17 17:18:01,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:18:01,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:18:01,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:18:01,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:18:01,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:18:01,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:18:01" (1/1) ... [2022-10-17 17:18:01,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314136b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:18:01, skipping insertion in model container [2022-10-17 17:18:01,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:18:01" (1/1) ... [2022-10-17 17:18:01,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:18:01,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:18:01,398 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_d8fe4560-ba83-4a5f-94c1-9250edc9952f/sv-benchmarks/c/loops/invert_string-3.c[327,340] [2022-10-17 17:18:01,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:18:01,428 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:18:01,440 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_d8fe4560-ba83-4a5f-94c1-9250edc9952f/sv-benchmarks/c/loops/invert_string-3.c[327,340] [2022-10-17 17:18:01,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:18:01,462 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:18:01,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:18:01 WrapperNode [2022-10-17 17:18:01,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:18:01,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:18:01,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:18:01,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:18:01,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:18:01" (1/1) ... [2022-10-17 17:18:01,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:18:01" (1/1) ... [2022-10-17 17:18:01,500 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2022-10-17 17:18:01,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:18:01,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:18:01,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:18:01,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:18:01,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:18:01" (1/1) ... [2022-10-17 17:18:01,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:18:01" (1/1) ... [2022-10-17 17:18:01,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:18:01" (1/1) ... [2022-10-17 17:18:01,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:18:01" (1/1) ... [2022-10-17 17:18:01,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:18:01" (1/1) ... [2022-10-17 17:18:01,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:18:01" (1/1) ... [2022-10-17 17:18:01,525 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:18:01" (1/1) ... [2022-10-17 17:18:01,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:18:01" (1/1) ... [2022-10-17 17:18:01,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:18:01,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:18:01,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:18:01,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:18:01,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:18:01" (1/1) ... [2022-10-17 17:18:01,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:18:01,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:18:01,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:18:01,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:18:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:18:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:18:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:18:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:18:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:18:01,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:18:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:18:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:18:01,688 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:18:01,690 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:18:01,909 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:18:01,995 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:18:01,996 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 17:18:01,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:18:01 BoogieIcfgContainer [2022-10-17 17:18:01,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:18:02,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:18:02,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:18:02,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:18:02,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:18:01" (1/3) ... [2022-10-17 17:18:02,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1933ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:18:02, skipping insertion in model container [2022-10-17 17:18:02,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:18:01" (2/3) ... [2022-10-17 17:18:02,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1933ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:18:02, skipping insertion in model container [2022-10-17 17:18:02,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:18:01" (3/3) ... [2022-10-17 17:18:02,009 INFO L112 eAbstractionObserver]: Analyzing ICFG invert_string-3.c [2022-10-17 17:18:02,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:18:02,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:18:02,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:18:02,110 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;@413e0da4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:18:02,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:18:02,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:02,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:18:02,123 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:02,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:18:02,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:18:02,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:02,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1538904472, now seen corresponding path program 1 times [2022-10-17 17:18:02,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:02,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101226866] [2022-10-17 17:18:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:02,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:18:02,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:02,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101226866] [2022-10-17 17:18:02,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101226866] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:02,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:02,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:18:02,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051781907] [2022-10-17 17:18:02,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:02,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:18:02,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:02,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:18:02,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:18:02,842 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:02,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:02,975 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2022-10-17 17:18:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:18:02,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-17 17:18:02,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:02,987 INFO L225 Difference]: With dead ends: 16 [2022-10-17 17:18:02,987 INFO L226 Difference]: Without dead ends: 9 [2022-10-17 17:18:02,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:18:02,994 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:02,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 6 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:18:03,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-10-17 17:18:03,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-10-17 17:18:03,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2022-10-17 17:18:03,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2022-10-17 17:18:03,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 6 [2022-10-17 17:18:03,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:03,032 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2022-10-17 17:18:03,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:03,032 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2022-10-17 17:18:03,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:18:03,033 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:03,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:03,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:18:03,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:18:03,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:03,035 INFO L85 PathProgramCache]: Analyzing trace with hash -467836134, now seen corresponding path program 1 times [2022-10-17 17:18:03,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:03,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310250217] [2022-10-17 17:18:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:03,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:18:03,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:03,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310250217] [2022-10-17 17:18:03,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310250217] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:18:03,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:18:03,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:18:03,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763199972] [2022-10-17 17:18:03,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:18:03,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:18:03,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:03,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:18:03,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:18:03,291 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:03,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:03,330 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2022-10-17 17:18:03,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:18:03,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-10-17 17:18:03,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:03,332 INFO L225 Difference]: With dead ends: 17 [2022-10-17 17:18:03,332 INFO L226 Difference]: Without dead ends: 10 [2022-10-17 17:18:03,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:18:03,341 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:03,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:18:03,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-10-17 17:18:03,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-10-17 17:18:03,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:03,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2022-10-17 17:18:03,358 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2022-10-17 17:18:03,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:03,360 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-10-17 17:18:03,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:03,361 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2022-10-17 17:18:03,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:18:03,366 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:03,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:03,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:18:03,367 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:18:03,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:03,369 INFO L85 PathProgramCache]: Analyzing trace with hash 924727707, now seen corresponding path program 1 times [2022-10-17 17:18:03,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:03,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758774258] [2022-10-17 17:18:03,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:03,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:03,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:18:03,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:03,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758774258] [2022-10-17 17:18:03,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758774258] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:18:03,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738255632] [2022-10-17 17:18:03,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:03,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:18:03,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:18:03,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:18:03,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:18:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:03,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 34 conjunts are in the unsatisfiable core [2022-10-17 17:18:03,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:18:03,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-17 17:18:03,909 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2022-10-17 17:18:03,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 15 treesize of output 14 [2022-10-17 17:18:03,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 13 [2022-10-17 17:18:04,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-10-17 17:18:04,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:04,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:04,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 20 [2022-10-17 17:18:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:18:04,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:18:04,730 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:18:04,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 330 treesize of output 1 [2022-10-17 17:18:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:18:04,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738255632] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:18:04,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1011746404] [2022-10-17 17:18:04,762 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-10-17 17:18:04,762 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:18:04,766 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:18:04,774 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:18:04,777 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:18:04,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:04,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:04,914 INFO L356 Elim1Store]: treesize reduction 125, result has 25.6 percent of original size [2022-10-17 17:18:04,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 75 [2022-10-17 17:18:04,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:04,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:05,027 INFO L356 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-10-17 17:18:05,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-10-17 17:18:05,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:05,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 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 [2022-10-17 17:18:05,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:05,346 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-10-17 17:18:05,347 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 5 case distinctions, treesize of input 339 treesize of output 336 [2022-10-17 17:18:05,536 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 14 treesize of output 10 [2022-10-17 17:18:05,623 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 32 treesize of output 28 [2022-10-17 17:18:05,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:05,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:05,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2022-10-17 17:18:05,707 INFO L356 Elim1Store]: treesize reduction 38, result has 20.8 percent of original size [2022-10-17 17:18:05,709 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 21 treesize of output 21 [2022-10-17 17:18:05,729 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:18:06,121 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '155#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#str2~0#1.base|) (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~#str2~0#1.offset|)) |ULTIMATE.start_main_#t~mem11#1|) (= (ite (= |ULTIMATE.start_main_#t~mem10#1| |ULTIMATE.start_main_#t~mem11#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= 5 |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#str2~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#str1~0#1.base|) (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~#str1~0#1.offset|)) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_~j~0#1| (ite (<= (mod (+ |ULTIMATE.start_main_~max~0#1| 4294967295) 4294967296) 2147483647) (mod (+ |ULTIMATE.start_main_~max~0#1| 4294967295) 4294967296) (+ (mod (+ |ULTIMATE.start_main_~max~0#1| 4294967295) 4294967296) (- 4294967296)))) (<= 0 |ULTIMATE.start_main_~#str2~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#str1~0#1.base|) (= |ULTIMATE.start_main_~#str1~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:18:06,121 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:18:06,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:18:06,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 12 [2022-10-17 17:18:06,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486427878] [2022-10-17 17:18:06,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:18:06,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 17:18:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:06,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 17:18:06,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-10-17 17:18:06,124 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:07,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:07,155 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2022-10-17 17:18:07,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 17:18:07,156 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-17 17:18:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:07,157 INFO L225 Difference]: With dead ends: 33 [2022-10-17 17:18:07,158 INFO L226 Difference]: Without dead ends: 26 [2022-10-17 17:18:07,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2022-10-17 17:18:07,160 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 36 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:07,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 23 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:18:07,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-10-17 17:18:07,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 15. [2022-10-17 17:18:07,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:07,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-10-17 17:18:07,180 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2022-10-17 17:18:07,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:07,181 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-10-17 17:18:07,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:07,181 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-10-17 17:18:07,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 17:18:07,183 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:07,183 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:07,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:18:07,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:18:07,411 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:18:07,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:07,412 INFO L85 PathProgramCache]: Analyzing trace with hash 179363066, now seen corresponding path program 2 times [2022-10-17 17:18:07,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:07,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927898998] [2022-10-17 17:18:07,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:07,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:07,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 17:18:07,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:07,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927898998] [2022-10-17 17:18:07,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927898998] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:18:07,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867659224] [2022-10-17 17:18:07,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:18:07,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:18:07,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:18:07,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:18:07,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:18:07,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-17 17:18:07,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:18:07,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 17:18:07,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:18:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 17:18:07,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:18:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 17:18:08,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867659224] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:18:08,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1103309643] [2022-10-17 17:18:08,109 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-10-17 17:18:08,109 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:18:08,109 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:18:08,109 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:18:08,110 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:18:08,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:08,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:08,189 INFO L356 Elim1Store]: treesize reduction 125, result has 25.6 percent of original size [2022-10-17 17:18:08,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 75 [2022-10-17 17:18:08,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:08,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:08,285 INFO L356 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-10-17 17:18:08,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-10-17 17:18:08,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:08,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 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 [2022-10-17 17:18:08,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:08,471 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-10-17 17:18:08,472 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 5 case distinctions, treesize of input 339 treesize of output 336 [2022-10-17 17:18:08,633 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 14 treesize of output 10 [2022-10-17 17:18:08,668 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 32 treesize of output 28 [2022-10-17 17:18:08,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:08,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 42 [2022-10-17 17:18:08,771 INFO L356 Elim1Store]: treesize reduction 38, result has 20.8 percent of original size [2022-10-17 17:18:08,771 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 21 treesize of output 21 [2022-10-17 17:18:08,788 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:18:09,168 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '336#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#str2~0#1.base|) (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~#str2~0#1.offset|)) |ULTIMATE.start_main_#t~mem11#1|) (= (ite (= |ULTIMATE.start_main_#t~mem10#1| |ULTIMATE.start_main_#t~mem11#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= 5 |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#str2~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#str1~0#1.base|) (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~#str1~0#1.offset|)) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_~j~0#1| (ite (<= (mod (+ |ULTIMATE.start_main_~max~0#1| 4294967295) 4294967296) 2147483647) (mod (+ |ULTIMATE.start_main_~max~0#1| 4294967295) 4294967296) (+ (mod (+ |ULTIMATE.start_main_~max~0#1| 4294967295) 4294967296) (- 4294967296)))) (<= 0 |ULTIMATE.start_main_~#str2~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#str1~0#1.base|) (= |ULTIMATE.start_main_~#str1~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:18:09,169 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:18:09,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:18:09,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 13 [2022-10-17 17:18:09,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196263270] [2022-10-17 17:18:09,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:18:09,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 17:18:09,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:09,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 17:18:09,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-10-17 17:18:09,171 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 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) [2022-10-17 17:18:10,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:10,372 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2022-10-17 17:18:10,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 17:18:10,373 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 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 11 [2022-10-17 17:18:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:10,374 INFO L225 Difference]: With dead ends: 40 [2022-10-17 17:18:10,374 INFO L226 Difference]: Without dead ends: 28 [2022-10-17 17:18:10,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-10-17 17:18:10,376 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:10,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 27 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:18:10,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-17 17:18:10,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 17. [2022-10-17 17:18:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:10,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-10-17 17:18:10,395 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-10-17 17:18:10,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:10,396 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-10-17 17:18:10,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 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) [2022-10-17 17:18:10,397 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-10-17 17:18:10,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:18:10,399 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:10,399 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:10,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:18:10,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:18:10,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:18:10,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:10,615 INFO L85 PathProgramCache]: Analyzing trace with hash -221982457, now seen corresponding path program 3 times [2022-10-17 17:18:10,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:10,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731180789] [2022-10-17 17:18:10,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:10,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 17:18:11,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:11,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731180789] [2022-10-17 17:18:11,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731180789] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:18:11,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999512193] [2022-10-17 17:18:11,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 17:18:11,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:18:11,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:18:11,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:18:11,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:18:11,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 17:18:11,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:18:11,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-17 17:18:11,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:18:11,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-10-17 17:18:11,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-10-17 17:18:11,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:11,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:11,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 20 [2022-10-17 17:18:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 17:18:11,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:18:12,052 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:18:12,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 78 [2022-10-17 17:18:12,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:12,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2022-10-17 17:18:12,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2022-10-17 17:18:12,108 INFO L356 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-10-17 17:18:12,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 90 [2022-10-17 17:18:12,155 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:18:12,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 76 [2022-10-17 17:18:12,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:12,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-10-17 17:18:12,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2022-10-17 17:18:12,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:12,196 INFO L356 Elim1Store]: treesize reduction 5, result has 68.8 percent of original size [2022-10-17 17:18:12,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 73 [2022-10-17 17:18:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 17:18:12,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999512193] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:18:12,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [640947942] [2022-10-17 17:18:12,858 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-10-17 17:18:12,858 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:18:12,858 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:18:12,858 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:18:12,862 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:18:12,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:12,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:12,949 INFO L356 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-10-17 17:18:12,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-10-17 17:18:12,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:12,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:12,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 61 [2022-10-17 17:18:12,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:12,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 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 [2022-10-17 17:18:13,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:13,126 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-10-17 17:18:13,127 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 5 case distinctions, treesize of input 339 treesize of output 336 [2022-10-17 17:18:13,235 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 14 treesize of output 10 [2022-10-17 17:18:13,287 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 32 treesize of output 28 [2022-10-17 17:18:13,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:13,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:13,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2022-10-17 17:18:13,347 INFO L356 Elim1Store]: treesize reduction 38, result has 20.8 percent of original size [2022-10-17 17:18:13,348 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 21 treesize of output 21 [2022-10-17 17:18:13,361 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:18:13,757 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '565#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#str2~0#1.base|) (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~#str2~0#1.offset|)) |ULTIMATE.start_main_#t~mem11#1|) (= (ite (= |ULTIMATE.start_main_#t~mem10#1| |ULTIMATE.start_main_#t~mem11#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= 5 |ULTIMATE.start_main_~max~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#str2~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#str1~0#1.base|) (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~#str1~0#1.offset|)) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_~j~0#1| (ite (<= (mod (+ |ULTIMATE.start_main_~max~0#1| 4294967295) 4294967296) 2147483647) (mod (+ |ULTIMATE.start_main_~max~0#1| 4294967295) 4294967296) (+ (mod (+ |ULTIMATE.start_main_~max~0#1| 4294967295) 4294967296) (- 4294967296)))) (<= 0 |ULTIMATE.start_main_~#str2~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#str1~0#1.base|) (= |ULTIMATE.start_main_~#str1~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:18:13,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:18:13,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:18:13,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 9] total 24 [2022-10-17 17:18:13,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639441851] [2022-10-17 17:18:13,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:18:13,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-17 17:18:13,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:13,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-17 17:18:13,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-10-17 17:18:13,760 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:16,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:16,381 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2022-10-17 17:18:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-17 17:18:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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 15 [2022-10-17 17:18:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:16,384 INFO L225 Difference]: With dead ends: 46 [2022-10-17 17:18:16,384 INFO L226 Difference]: Without dead ends: 41 [2022-10-17 17:18:16,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=458, Invalid=1992, Unknown=0, NotChecked=0, Total=2450 [2022-10-17 17:18:16,386 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 118 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:16,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 125 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 17:18:16,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-17 17:18:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2022-10-17 17:18:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 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) [2022-10-17 17:18:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-10-17 17:18:16,414 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 15 [2022-10-17 17:18:16,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:16,415 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-10-17 17:18:16,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:16,415 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2022-10-17 17:18:16,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:18:16,416 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:16,416 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:16,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:18:16,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:18:16,631 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:18:16,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:16,632 INFO L85 PathProgramCache]: Analyzing trace with hash -885253886, now seen corresponding path program 1 times [2022-10-17 17:18:16,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:16,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387533926] [2022-10-17 17:18:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:16,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 17:18:18,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:18,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387533926] [2022-10-17 17:18:18,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387533926] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:18:18,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124694014] [2022-10-17 17:18:18,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:18,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:18:18,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:18:18,015 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:18:18,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 17:18:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:18,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-17 17:18:18,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:18:18,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-10-17 17:18:18,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-10-17 17:18:18,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-10-17 17:18:18,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:18,921 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 20 [2022-10-17 17:18:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 17:18:18,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:18:19,201 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:18:19,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 442 treesize of output 410 [2022-10-17 17:18:19,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,661 INFO L356 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2022-10-17 17:18:19,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 86 [2022-10-17 17:18:19,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-10-17 17:18:19,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,717 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:18:19,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 91 [2022-10-17 17:18:19,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,745 INFO L356 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2022-10-17 17:18:19,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 155 [2022-10-17 17:18:19,782 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:18:19,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 1 [2022-10-17 17:18:19,799 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:18:19,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 70 [2022-10-17 17:18:19,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:19,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,835 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:18:19,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 89 treesize of output 1 [2022-10-17 17:18:19,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2022-10-17 17:18:19,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:19,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 51 [2022-10-17 17:18:19,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-10-17 17:18:19,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-10-17 17:18:19,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2022-10-17 17:18:19,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:19,960 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:18:19,961 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 442 treesize of output 410 [2022-10-17 17:18:21,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2022-10-17 17:18:21,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 143 [2022-10-17 17:18:21,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2022-10-17 17:18:21,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 346 treesize of output 310 [2022-10-17 17:18:21,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-10-17 17:18:21,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 170 [2022-10-17 17:18:21,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2022-10-17 17:18:21,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 143 [2022-10-17 17:18:21,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-10-17 17:18:21,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 74 [2022-10-17 17:18:21,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2022-10-17 17:18:21,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 143 [2022-10-17 17:18:21,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-10-17 17:18:21,325 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 74 [2022-10-17 17:18:21,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2022-10-17 17:18:21,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-10-17 17:18:21,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2022-10-17 17:18:21,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-10-17 17:18:21,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-10-17 17:18:21,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-10-17 17:18:21,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-10-17 17:18:21,445 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:18:21,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 170 [2022-10-17 17:18:21,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,506 INFO L356 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2022-10-17 17:18:21,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 236 treesize of output 182 [2022-10-17 17:18:21,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:21,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,558 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:18:21,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 89 treesize of output 1 [2022-10-17 17:18:21,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:21,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,573 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:18:21,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 1 [2022-10-17 17:18:21,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:21,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,591 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:18:21,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 89 treesize of output 1 [2022-10-17 17:18:21,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-10-17 17:18:21,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:21,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,644 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:18:21,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 89 treesize of output 1 [2022-10-17 17:18:21,661 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:18:21,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 141 [2022-10-17 17:18:21,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:21,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:21,707 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-10-17 17:18:21,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 402 treesize of output 1 [2022-10-17 17:18:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 17:18:22,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124694014] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:18:22,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1307323230] [2022-10-17 17:18:22,482 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-10-17 17:18:22,483 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:18:22,483 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:18:22,483 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:18:22,483 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:18:22,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:22,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:22,549 INFO L356 Elim1Store]: treesize reduction 125, result has 25.6 percent of original size [2022-10-17 17:18:22,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 75 [2022-10-17 17:18:22,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:22,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:22,631 INFO L356 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-10-17 17:18:22,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-10-17 17:18:22,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:22,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2022-10-17 17:18:22,776 INFO L356 Elim1Store]: treesize reduction 84, result has 15.2 percent of original size [2022-10-17 17:18:22,777 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 349 treesize of output 339 [2022-10-17 17:18:22,871 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 14 treesize of output 10 [2022-10-17 17:18:22,904 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 32 treesize of output 28 [2022-10-17 17:18:22,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:22,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:22,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2022-10-17 17:18:22,958 INFO L356 Elim1Store]: treesize reduction 38, result has 20.8 percent of original size [2022-10-17 17:18:22,958 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 21 treesize of output 21 [2022-10-17 17:18:23,041 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:18:23,562 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '864#(and (= (select (select |#memory_int| |ULTIMATE.start_main_~#str2~0#1.base|) (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~#str2~0#1.offset|)) |ULTIMATE.start_main_#t~mem11#1|) (= (ite (= |ULTIMATE.start_main_#t~mem10#1| |ULTIMATE.start_main_#t~mem11#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= 5 |ULTIMATE.start_main_~max~0#1|) (<= 0 |ULTIMATE.start_main_~#str2~0#1.offset|) (<= |ULTIMATE.start_main_~#str1~0#1.offset| 0) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#str1~0#1.base|) (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~#str1~0#1.offset|)) |ULTIMATE.start_main_#t~mem10#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#str2~0#1.base|) (< (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (mod |ULTIMATE.start_main_~max~0#1| 4294967296)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~#str1~0#1.base|) (<= 0 |ULTIMATE.start_main_~#str1~0#1.offset|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#str2~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:18:23,563 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:18:23,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:18:23,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-10-17 17:18:23,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717928885] [2022-10-17 17:18:23,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:18:23,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-17 17:18:23,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:18:23,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-17 17:18:23,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2022-10-17 17:18:23,565 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 25 states, 25 states have (on average 1.36) internal successors, (34), 24 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) [2022-10-17 17:18:27,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:18:27,998 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2022-10-17 17:18:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-10-17 17:18:27,998 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.36) internal successors, (34), 24 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 19 [2022-10-17 17:18:27,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:18:28,000 INFO L225 Difference]: With dead ends: 69 [2022-10-17 17:18:28,000 INFO L226 Difference]: Without dead ends: 67 [2022-10-17 17:18:28,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=543, Invalid=2763, Unknown=0, NotChecked=0, Total=3306 [2022-10-17 17:18:28,003 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 74 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:18:28,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 90 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 179 Invalid, 0 Unknown, 55 Unchecked, 0.4s Time] [2022-10-17 17:18:28,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-10-17 17:18:28,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 31. [2022-10-17 17:18:28,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:18:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2022-10-17 17:18:28,035 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 19 [2022-10-17 17:18:28,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:18:28,035 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-10-17 17:18:28,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.36) internal successors, (34), 24 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) [2022-10-17 17:18:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2022-10-17 17:18:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 17:18:28,037 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:18:28,037 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 1, 1, 1, 1, 1, 1] [2022-10-17 17:18:28,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:18:28,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:18:28,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:18:28,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:18:28,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1851359067, now seen corresponding path program 4 times [2022-10-17 17:18:28,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:18:28,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757232835] [2022-10-17 17:18:28,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:18:28,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:18:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 17:18:28,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:18:28,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757232835] [2022-10-17 17:18:28,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757232835] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:18:28,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279583578] [2022-10-17 17:18:28,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-17 17:18:28,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:18:28,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:18:28,717 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:18:28,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8fe4560-ba83-4a5f-94c1-9250edc9952f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 17:18:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:18:28,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 62 conjunts are in the unsatisfiable core [2022-10-17 17:18:28,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:18:28,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-17 17:18:29,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-10-17 17:18:29,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:29,654 INFO L356 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2022-10-17 17:18:29,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 23 [2022-10-17 17:18:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 17:18:29,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:18:29,841 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:18:29,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 78 [2022-10-17 17:18:29,880 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-10-17 17:18:29,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2022-10-17 17:18:29,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:29,901 INFO L356 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2022-10-17 17:18:29,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 36 [2022-10-17 17:18:29,915 INFO L356 Elim1Store]: treesize reduction 41, result has 2.4 percent of original size [2022-10-17 17:18:29,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 1 [2022-10-17 17:18:29,925 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:18:29,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 1 [2022-10-17 17:18:29,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:29,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2022-10-17 17:18:29,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:29,951 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:18:29,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 76 [2022-10-17 17:18:29,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:29,994 INFO L356 Elim1Store]: treesize reduction 5, result has 68.8 percent of original size [2022-10-17 17:18:29,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 31 [2022-10-17 17:18:30,007 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-10-17 17:18:30,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2022-10-17 17:18:30,013 INFO L356 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2022-10-17 17:18:30,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 1 [2022-10-17 17:18:30,021 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:18:30,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2022-10-17 17:18:30,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:30,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-10-17 17:18:30,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 17:18:30,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279583578] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:18:30,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2048642716] [2022-10-17 17:18:30,609 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-10-17 17:18:30,609 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:18:30,610 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:18:30,610 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:18:30,610 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:18:30,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:30,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:30,681 INFO L356 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-10-17 17:18:30,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-10-17 17:18:30,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:30,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:30,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 61 [2022-10-17 17:18:30,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:30,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 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 [2022-10-17 17:18:30,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:30,859 INFO L356 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-10-17 17:18:30,860 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 5 case distinctions, treesize of input 339 treesize of output 336 [2022-10-17 17:18:30,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-10-17 17:18:31,011 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 32 treesize of output 28 [2022-10-17 17:18:31,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:18:31,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:18:31,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2022-10-17 17:18:31,109 INFO L356 Elim1Store]: treesize reduction 38, result has 20.8 percent of original size [2022-10-17 17:18:31,110 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 21 treesize of output 21 [2022-10-17 17:18:31,126 INFO L180 IcfgInterpreter]: Interpretation finished