./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i --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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/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 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 --- 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 17:40:54,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:40:54,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:40:54,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:40:54,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:40:54,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:40:54,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:40:54,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:40:54,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:40:54,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:40:54,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:40:54,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:40:54,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:40:54,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:40:54,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:40:54,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:40:54,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:40:54,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:40:54,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:40:54,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:40:54,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:40:54,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:40:54,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:40:54,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:40:54,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:40:54,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:40:54,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:40:54,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:40:54,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:40:54,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:40:54,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:40:54,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:40:54,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:40:54,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:40:54,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:40:54,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:40:54,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:40:54,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:40:54,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:40:54,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:40:54,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:40:54,204 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:40:54,249 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:40:54,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:40:54,250 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:40:54,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:40:54,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:40:54,252 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:40:54,252 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:40:54,252 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:40:54,253 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:40:54,253 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:40:54,254 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:40:54,262 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:40:54,262 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:40:54,262 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:40:54,263 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:40:54,263 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:40:54,263 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:40:54,263 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:40:54,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:40:54,264 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:40:54,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:40:54,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:40:54,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:40:54,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:40:54,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:40:54,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:40:54,266 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:40:54,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:40:54,267 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:40:54,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:40:54,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:40:54,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:40:54,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:54,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:40:54,269 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:40:54,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:40:54,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:40:54,270 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:40:54,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:40:54,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:40:54,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:40:54,270 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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 [2022-10-17 17:40:54,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:40:54,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:40:54,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:40:54,546 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:40:54,547 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:40:54,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/forester-heap/dll-sorted-2.i [2022-10-17 17:40:54,617 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/data/2eb3b9e8e/dd6d5e87717d4f8199d65482cb3e2816/FLAG03c3654c6 [2022-10-17 17:40:55,200 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:40:55,201 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/sv-benchmarks/c/forester-heap/dll-sorted-2.i [2022-10-17 17:40:55,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/data/2eb3b9e8e/dd6d5e87717d4f8199d65482cb3e2816/FLAG03c3654c6 [2022-10-17 17:40:55,466 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/data/2eb3b9e8e/dd6d5e87717d4f8199d65482cb3e2816 [2022-10-17 17:40:55,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:40:55,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:40:55,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:55,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:40:55,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:40:55,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:55" (1/1) ... [2022-10-17 17:40:55,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419fd1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:55, skipping insertion in model container [2022-10-17 17:40:55,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:55" (1/1) ... [2022-10-17 17:40:55,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:40:55,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:40:55,887 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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2022-10-17 17:40:55,892 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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2022-10-17 17:40:55,897 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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2022-10-17 17:40:55,898 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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2022-10-17 17:40:55,899 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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2022-10-17 17:40:55,902 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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2022-10-17 17:40:55,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:55,922 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:40:55,981 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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2022-10-17 17:40:55,988 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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2022-10-17 17:40:55,995 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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2022-10-17 17:40:55,997 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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2022-10-17 17:40:56,000 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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2022-10-17 17:40:56,002 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_18450058-42ab-4d33-9fd1-d9b178a2f4fa/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2022-10-17 17:40:56,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:56,048 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:40:56,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:56 WrapperNode [2022-10-17 17:40:56,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:56,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:56,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:40:56,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:40:56,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:56" (1/1) ... [2022-10-17 17:40:56,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:56" (1/1) ... [2022-10-17 17:40:56,108 INFO L138 Inliner]: procedures = 119, calls = 45, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 194 [2022-10-17 17:40:56,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:56,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:40:56,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:40:56,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:40:56,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:56" (1/1) ... [2022-10-17 17:40:56,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:56" (1/1) ... [2022-10-17 17:40:56,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:56" (1/1) ... [2022-10-17 17:40:56,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:56" (1/1) ... [2022-10-17 17:40:56,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:56" (1/1) ... [2022-10-17 17:40:56,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:56" (1/1) ... [2022-10-17 17:40:56,164 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:56" (1/1) ... [2022-10-17 17:40:56,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:56" (1/1) ... [2022-10-17 17:40:56,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:40:56,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:40:56,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:40:56,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:40:56,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:56" (1/1) ... [2022-10-17 17:40:56,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:56,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:56,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:40:56,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:40:56,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:40:56,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:40:56,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:40:56,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:40:56,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:40:56,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:40:56,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:40:56,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:40:56,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:40:56,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:40:56,380 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:40:56,382 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:40:56,841 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:40:57,009 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:40:57,009 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-10-17 17:40:57,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:57 BoogieIcfgContainer [2022-10-17 17:40:57,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:40:57,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:40:57,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:40:57,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:40:57,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:40:55" (1/3) ... [2022-10-17 17:40:57,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a56269f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:40:57, skipping insertion in model container [2022-10-17 17:40:57,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:56" (2/3) ... [2022-10-17 17:40:57,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a56269f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:40:57, skipping insertion in model container [2022-10-17 17:40:57,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:57" (3/3) ... [2022-10-17 17:40:57,025 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-sorted-2.i [2022-10-17 17:40:57,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:40:57,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-10-17 17:40:57,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:40:57,152 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;@48a60132, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:40:57,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-17 17:40:57,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 43 states have internal predecessors, (71), 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 17:40:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:40:57,170 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:57,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 17:40:57,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 17:40:57,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:57,180 INFO L85 PathProgramCache]: Analyzing trace with hash 245535628, now seen corresponding path program 1 times [2022-10-17 17:40:57,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:57,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305675271] [2022-10-17 17:40:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:57,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:57,383 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 17:40:57,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:57,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305675271] [2022-10-17 17:40:57,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305675271] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:57,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:57,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:40:57,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468213762] [2022-10-17 17:40:57,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:57,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:40:57,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:57,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:40:57,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:40:57,442 INFO L87 Difference]: Start difference. First operand has 44 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 43 states have internal predecessors, (71), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 17:40:57,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:57,545 INFO L93 Difference]: Finished difference Result 85 states and 137 transitions. [2022-10-17 17:40:57,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:40:57,548 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-10-17 17:40:57,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:57,556 INFO L225 Difference]: With dead ends: 85 [2022-10-17 17:40:57,557 INFO L226 Difference]: Without dead ends: 42 [2022-10-17 17:40:57,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:40:57,564 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:57,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:57,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-17 17:40:57,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-10-17 17:40:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 41 states have internal predecessors, (46), 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 17:40:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-10-17 17:40:57,602 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 5 [2022-10-17 17:40:57,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:57,603 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-10-17 17:40:57,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 17:40:57,604 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-10-17 17:40:57,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:40:57,604 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:57,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:40:57,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:40:57,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 17:40:57,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:57,606 INFO L85 PathProgramCache]: Analyzing trace with hash -996419023, now seen corresponding path program 1 times [2022-10-17 17:40:57,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:57,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614576574] [2022-10-17 17:40:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:57,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:57,688 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 17:40:57,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:57,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614576574] [2022-10-17 17:40:57,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614576574] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:57,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:57,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:40:57,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004968207] [2022-10-17 17:40:57,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:57,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:40:57,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:57,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:40:57,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:40:57,694 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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 17:40:57,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:57,812 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2022-10-17 17:40:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:40:57,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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 17:40:57,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:57,814 INFO L225 Difference]: With dead ends: 84 [2022-10-17 17:40:57,815 INFO L226 Difference]: Without dead ends: 45 [2022-10-17 17:40:57,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:40:57,817 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:57,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 60 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:57,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-10-17 17:40:57,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2022-10-17 17:40:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.263157894736842) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-10-17 17:40:57,827 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 6 [2022-10-17 17:40:57,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:57,827 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-10-17 17:40:57,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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 17:40:57,828 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-10-17 17:40:57,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:40:57,829 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:57,829 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:57,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:40:57,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 17:40:57,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:57,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1462768708, now seen corresponding path program 1 times [2022-10-17 17:40:57,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:57,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710895858] [2022-10-17 17:40:57,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:57,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:40:58,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:58,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710895858] [2022-10-17 17:40:58,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710895858] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:58,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:58,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:40:58,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789700245] [2022-10-17 17:40:58,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:58,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:40:58,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:58,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:40:58,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:40:58,101 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 17:40:58,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:58,278 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2022-10-17 17:40:58,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:40:58,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 8 [2022-10-17 17:40:58,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:58,283 INFO L225 Difference]: With dead ends: 72 [2022-10-17 17:40:58,283 INFO L226 Difference]: Without dead ends: 70 [2022-10-17 17:40:58,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:40:58,287 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 96 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:58,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-10-17 17:40:58,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 42. [2022-10-17 17:40:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 41 states have internal predecessors, (46), 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 17:40:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-10-17 17:40:58,308 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 8 [2022-10-17 17:40:58,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:58,308 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-10-17 17:40:58,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 17:40:58,309 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-10-17 17:40:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 17:40:58,309 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:58,309 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:58,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:40:58,310 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 17:40:58,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:58,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2117176794, now seen corresponding path program 1 times [2022-10-17 17:40:58,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:58,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018814759] [2022-10-17 17:40:58,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:58,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:00,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:00,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018814759] [2022-10-17 17:41:00,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018814759] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:00,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667908231] [2022-10-17 17:41:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:00,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:00,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:00,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:00,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:41:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:00,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-17 17:41:00,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:00,724 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 6 treesize of output 5 [2022-10-17 17:41:00,877 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 153 [2022-10-17 17:41:00,889 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 177 [2022-10-17 17:41:00,966 INFO L356 Elim1Store]: treesize reduction 56, result has 33.3 percent of original size [2022-10-17 17:41:00,967 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: var is still there: v_arrayElimArr_1 input size 94 context size 94 output size 94 [2022-10-17 17:41:00,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1483571757] [2022-10-17 17:41:00,992 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-10-17 17:41:00,993 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:41:00,996 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:41:01,002 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:41:01,002 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:41:01,094 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-10-17 17:41:01,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 30 [2022-10-17 17:41:01,139 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-10-17 17:41:01,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-10-17 17:41:01,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-10-17 17:41:01,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 46 [2022-10-17 17:41:01,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-10-17 17:41:01,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:01,443 INFO L356 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2022-10-17 17:41:01,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 336 treesize of output 237 [2022-10-17 17:41:01,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,544 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 17:41:01,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 202 treesize of output 103 [2022-10-17 17:41:01,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 206 treesize of output 201 [2022-10-17 17:41:01,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-10-17 17:41:01,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 45 [2022-10-17 17:41:01,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:01,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 85 [2022-10-17 17:41:01,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-10-17 17:41:01,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,905 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2022-10-17 17:41:02,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:02,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:02,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:02,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:02,271 INFO L356 Elim1Store]: treesize reduction 112, result has 11.8 percent of original size [2022-10-17 17:41:02,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 320 treesize of output 222 [2022-10-17 17:41:02,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:02,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:02,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:02,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:02,358 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-10-17 17:41:02,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 96 [2022-10-17 17:41:02,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:41:02,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-10-17 17:41:02,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:02,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:02,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:02,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:02,500 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-10-17 17:41:02,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 140 treesize of output 160 [2022-10-17 17:41:02,951 INFO L356 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2022-10-17 17:41:02,952 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 67 [2022-10-17 17:41:02,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:02,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:02,970 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-10-17 17:41:02,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:02,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:02,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:02,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 51 [2022-10-17 17:41:03,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:03,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:03,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:03,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:03,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:03,319 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:41:03,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 320 treesize of output 226 [2022-10-17 17:41:03,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-10-17 17:41:03,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:03,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:03,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:03,454 INFO L356 Elim1Store]: treesize reduction 140, result has 11.9 percent of original size [2022-10-17 17:41:03,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 160 treesize of output 92 [2022-10-17 17:41:03,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:03,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:03,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:03,582 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-10-17 17:41:03,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 140 treesize of output 160 [2022-10-17 17:41:03,839 INFO L356 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2022-10-17 17:41:03,840 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 67 [2022-10-17 17:41:03,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:03,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:03,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-10-17 17:41:03,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:03,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:03,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 51 [2022-10-17 17:41:03,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:41:03,946 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:41:04,940 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '545#(and (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (not (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 8)) 0)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ 8 |ULTIMATE.start_main_~x~0#1.offset|)) 1)) (= |ULTIMATE.start_main_~marked~0#1| 0) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0))) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) |ULTIMATE.start_main_~x~0#1.offset|) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:41:04,941 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:41:04,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:41:04,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-10-17 17:41:04,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663477906] [2022-10-17 17:41:04,942 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-17 17:41:04,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:41:04,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:04,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:41:04,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-10-17 17:41:04,946 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 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 17:41:05,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:05,825 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2022-10-17 17:41:05,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 17:41:05,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 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 16 [2022-10-17 17:41:05,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:05,828 INFO L225 Difference]: With dead ends: 74 [2022-10-17 17:41:05,829 INFO L226 Difference]: Without dead ends: 72 [2022-10-17 17:41:05,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-10-17 17:41:05,830 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 48 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:05,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 174 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-17 17:41:05,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-10-17 17:41:05,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2022-10-17 17:41:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 53 states have internal predecessors, (61), 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 17:41:05,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2022-10-17 17:41:05,841 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 16 [2022-10-17 17:41:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:05,841 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2022-10-17 17:41:05,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 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 17:41:05,842 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2022-10-17 17:41:05,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:41:05,843 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:05,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:05,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-17 17:41:06,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-17 17:41:06,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 17:41:06,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:06,057 INFO L85 PathProgramCache]: Analyzing trace with hash -952069976, now seen corresponding path program 1 times [2022-10-17 17:41:06,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:06,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342156349] [2022-10-17 17:41:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:06,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:07,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:07,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342156349] [2022-10-17 17:41:07,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342156349] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:07,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401336599] [2022-10-17 17:41:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:07,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:07,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:07,199 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:07,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:41:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:07,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 60 conjunts are in the unsatisfiable core [2022-10-17 17:41:07,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:07,348 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 6 treesize of output 5 [2022-10-17 17:41:07,452 INFO L356 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-10-17 17:41:07,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 1072 treesize of output 790 [2022-10-17 17:41:07,502 INFO L356 Elim1Store]: treesize reduction 54, result has 18.2 percent of original size [2022-10-17 17:41:07,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1288 treesize of output 971 [2022-10-17 17:41:07,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,597 INFO L356 Elim1Store]: treesize reduction 281, result has 1.7 percent of original size [2022-10-17 17:41:07,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 881 treesize of output 827 [2022-10-17 17:41:07,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,725 INFO L356 Elim1Store]: treesize reduction 143, result has 10.1 percent of original size [2022-10-17 17:41:07,726 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: var is still there: v_arrayElimArr_17 input size 138 context size 138 output size 138 [2022-10-17 17:41:07,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [974534231] [2022-10-17 17:41:07,728 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-10-17 17:41:07,728 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:41:07,729 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:41:07,729 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:41:07,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:41:07,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,776 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:41:07,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 50 [2022-10-17 17:41:07,811 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-10-17 17:41:07,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 30 [2022-10-17 17:41:07,857 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-10-17 17:41:07,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-10-17 17:41:07,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-10-17 17:41:07,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-10-17 17:41:07,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:07,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:07,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,083 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 17:41:08,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 336 treesize of output 237 [2022-10-17 17:41:08,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,138 INFO L356 Elim1Store]: treesize reduction 31, result has 26.2 percent of original size [2022-10-17 17:41:08,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 234 treesize of output 107 [2022-10-17 17:41:08,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 206 treesize of output 201 [2022-10-17 17:41:08,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-10-17 17:41:08,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,304 INFO L356 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2022-10-17 17:41:08,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 61 [2022-10-17 17:41:08,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:08,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 82 [2022-10-17 17:41:08,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-10-17 17:41:08,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,458 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-10-17 17:41:08,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:08,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:08,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,708 INFO L356 Elim1Store]: treesize reduction 112, result has 11.8 percent of original size [2022-10-17 17:41:08,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 320 treesize of output 222 [2022-10-17 17:41:08,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:08,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,796 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-10-17 17:41:08,796 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 96 [2022-10-17 17:41:08,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:41:08,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-10-17 17:41:08,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:08,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:08,904 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-10-17 17:41:08,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 140 treesize of output 160 [2022-10-17 17:41:09,145 INFO L356 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2022-10-17 17:41:09,146 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 67 [2022-10-17 17:41:09,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:09,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:09,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-10-17 17:41:09,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:09,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:09,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:09,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 51 [2022-10-17 17:41:09,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:09,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:09,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:09,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:09,698 INFO L356 Elim1Store]: treesize reduction 112, result has 11.8 percent of original size [2022-10-17 17:41:09,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 320 treesize of output 222 [2022-10-17 17:41:09,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:09,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:09,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:09,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:09,783 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-10-17 17:41:09,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 96 [2022-10-17 17:41:09,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:41:09,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:09,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:09,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:09,880 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-10-17 17:41:09,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 140 treesize of output 160 [2022-10-17 17:41:10,061 INFO L356 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2022-10-17 17:41:10,061 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 67 [2022-10-17 17:41:10,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:10,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:10,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-10-17 17:41:10,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:10,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:10,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:10,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 51 [2022-10-17 17:41:10,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-10-17 17:41:10,228 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:41:10,858 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '748#(and (or (exists ((|v_ULTIMATE.start_main_~x~0#1.base_75| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_77| Int)) (and (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~x~0#1.base_75|) |v_ULTIMATE.start_main_~x~0#1.offset_77|) 0)) (not (= 0 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~x~0#1.base_75|) |v_ULTIMATE.start_main_~x~0#1.offset_77|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~x~0#1.base_75|) |v_ULTIMATE.start_main_~x~0#1.offset_77|) 8)))) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~x~0#1.base_75|) |v_ULTIMATE.start_main_~x~0#1.offset_77|) |ULTIMATE.start_main_~x~0#1.offset|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~x~0#1.base_75|) |v_ULTIMATE.start_main_~x~0#1.offset_77|) |ULTIMATE.start_main_~x~0#1.base|))) (exists ((|v_ULTIMATE.start_main_~x~0#1.base_75| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_77| Int)) (and (not (= 0 (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~x~0#1.base_75|) |v_ULTIMATE.start_main_~x~0#1.offset_77|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~x~0#1.base_75|) |v_ULTIMATE.start_main_~x~0#1.offset_77|) 8)))) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~x~0#1.base_75|) |v_ULTIMATE.start_main_~x~0#1.offset_77|) |ULTIMATE.start_main_~x~0#1.offset|) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~x~0#1.base_75|) |v_ULTIMATE.start_main_~x~0#1.offset_77|) 0)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~x~0#1.base_75|) |v_ULTIMATE.start_main_~x~0#1.offset_77|) |ULTIMATE.start_main_~x~0#1.base|)))) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ 8 |ULTIMATE.start_main_~x~0#1.offset|)) 1)) (= |ULTIMATE.start_main_~marked~0#1| 0) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:41:10,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:41:10,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:41:10,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-10-17 17:41:10,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215165017] [2022-10-17 17:41:10,859 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-17 17:41:10,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 17:41:10,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:10,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 17:41:10,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-10-17 17:41:10,860 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:11,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:11,579 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2022-10-17 17:41:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 17:41:11,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-17 17:41:11,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:11,585 INFO L225 Difference]: With dead ends: 103 [2022-10-17 17:41:11,585 INFO L226 Difference]: Without dead ends: 72 [2022-10-17 17:41:11,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-10-17 17:41:11,587 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 66 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:11,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 170 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 17:41:11,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-10-17 17:41:11,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2022-10-17 17:41:11,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 58 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:11,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2022-10-17 17:41:11,598 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 18 [2022-10-17 17:41:11,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:11,598 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2022-10-17 17:41:11,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:11,599 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2022-10-17 17:41:11,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:41:11,599 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:11,600 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:11,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-17 17:41:11,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:11,805 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 17:41:11,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1183748699, now seen corresponding path program 2 times [2022-10-17 17:41:11,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:11,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500299959] [2022-10-17 17:41:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:15,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:15,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500299959] [2022-10-17 17:41:15,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500299959] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:15,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726638924] [2022-10-17 17:41:15,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:41:15,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:15,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:15,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:15,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:41:15,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-17 17:41:15,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:41:15,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 81 conjunts are in the unsatisfiable core [2022-10-17 17:41:15,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:15,747 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 6 treesize of output 5 [2022-10-17 17:41:15,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 123 treesize of output 106 [2022-10-17 17:41:15,827 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 110 [2022-10-17 17:41:15,851 INFO L356 Elim1Store]: treesize reduction 50, result has 9.1 percent of original size [2022-10-17 17:41:15,852 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 160 treesize of output 137 [2022-10-17 17:41:15,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:15,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:15,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:15,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:15,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 73 [2022-10-17 17:41:15,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 55 [2022-10-17 17:41:15,884 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 30 treesize of output 28 [2022-10-17 17:41:15,910 INFO L356 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2022-10-17 17:41:15,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2022-10-17 17:41:16,048 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 0 case distinctions, treesize of input 18 treesize of output 7 [2022-10-17 17:41:16,054 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 7 treesize of output 3 [2022-10-17 17:41:16,114 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 7 treesize of output 3 [2022-10-17 17:41:16,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,346 INFO L356 Elim1Store]: treesize reduction 199, result has 5.2 percent of original size [2022-10-17 17:41:16,346 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 296 treesize of output 270 [2022-10-17 17:41:16,355 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 236 [2022-10-17 17:41:16,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,404 INFO L356 Elim1Store]: treesize reduction 109, result has 9.2 percent of original size [2022-10-17 17:41:16,406 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: var is still there: |v_#memory_$Pointer$.base_73| input size 86 context size 86 output size 86 [2022-10-17 17:41:16,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [66363066] [2022-10-17 17:41:16,411 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-10-17 17:41:16,411 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:41:16,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:41:16,412 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:41:16,412 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:41:16,457 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-10-17 17:41:16,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 30 [2022-10-17 17:41:16,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-10-17 17:41:16,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-10-17 17:41:16,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,526 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:41:16,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 50 [2022-10-17 17:41:16,574 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-10-17 17:41:16,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-10-17 17:41:16,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:16,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,765 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 17:41:16,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 336 treesize of output 237 [2022-10-17 17:41:16,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,826 INFO L356 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-10-17 17:41:16,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 103 [2022-10-17 17:41:16,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:16,915 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-10-17 17:41:16,916 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 116 treesize of output 164 [2022-10-17 17:41:17,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,051 INFO L356 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-10-17 17:41:17,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 90 [2022-10-17 17:41:17,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,062 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-10-17 17:41:17,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-10-17 17:41:17,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2022-10-17 17:41:17,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,147 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-10-17 17:41:17,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-10-17 17:41:17,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,201 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-10-17 17:41:17,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-10-17 17:41:17,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:17,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,432 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:41:17,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 320 treesize of output 226 [2022-10-17 17:41:17,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:17,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,535 INFO L356 Elim1Store]: treesize reduction 140, result has 11.9 percent of original size [2022-10-17 17:41:17,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 160 treesize of output 92 [2022-10-17 17:41:17,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:17,595 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-10-17 17:41:17,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 140 treesize of output 160 [2022-10-17 17:41:17,684 INFO L356 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2022-10-17 17:41:17,684 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 67 [2022-10-17 17:41:17,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-10-17 17:41:17,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:17,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:17,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 51 [2022-10-17 17:41:17,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-10-17 17:41:17,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:41:17,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:18,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:18,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:18,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:18,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:18,096 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:41:18,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 320 treesize of output 226 [2022-10-17 17:41:18,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:18,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:18,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:18,209 INFO L356 Elim1Store]: treesize reduction 140, result has 11.9 percent of original size [2022-10-17 17:41:18,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 160 treesize of output 92 [2022-10-17 17:41:18,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:18,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:18,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:18,288 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-10-17 17:41:18,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 140 treesize of output 160 [2022-10-17 17:41:18,382 INFO L356 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2022-10-17 17:41:18,383 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 67 [2022-10-17 17:41:18,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:18,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:18,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-10-17 17:41:18,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:18,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:41:18,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:18,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 51 [2022-10-17 17:41:18,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-10-17 17:41:18,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:41:18,510 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:41:19,567 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1008#(and (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (not (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 8)) 0)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ 8 |ULTIMATE.start_main_~x~0#1.offset|)) 1)) (= |ULTIMATE.start_main_~marked~0#1| 0) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0))) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) |ULTIMATE.start_main_~x~0#1.offset|) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:41:19,567 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:41:19,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:41:19,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-10-17 17:41:19,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499032176] [2022-10-17 17:41:19,567 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-17 17:41:19,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 17:41:19,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:19,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 17:41:19,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-10-17 17:41:19,569 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:21,427 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2022-10-17 17:41:21,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 17:41:21,435 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-17 17:41:21,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:21,437 INFO L225 Difference]: With dead ends: 91 [2022-10-17 17:41:21,438 INFO L226 Difference]: Without dead ends: 89 [2022-10-17 17:41:21,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=159, Invalid=1101, Unknown=0, NotChecked=0, Total=1260 [2022-10-17 17:41:21,441 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 88 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:21,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 240 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-17 17:41:21,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-10-17 17:41:21,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 71. [2022-10-17 17:41:21,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 70 states have internal predecessors, (82), 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 17:41:21,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2022-10-17 17:41:21,470 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 18 [2022-10-17 17:41:21,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:21,470 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2022-10-17 17:41:21,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:21,471 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2022-10-17 17:41:21,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:41:21,472 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:21,472 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:21,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:41:21,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18450058-42ab-4d33-9fd1-d9b178a2f4fa/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:21,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-10-17 17:41:21,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:21,697 INFO L85 PathProgramCache]: Analyzing trace with hash -13104649, now seen corresponding path program 1 times [2022-10-17 17:41:21,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:21,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440218614] [2022-10-17 17:41:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:21,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat