./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7 --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 52fc70d7844651686a4c27e057f507f0498e7d5f7c17f07a035699d1630f6ea2 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:13:13,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:13:13,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:13:13,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:13:13,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:13:13,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:13:13,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:13:13,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:13:13,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:13:13,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:13:13,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:13:13,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:13:13,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:13:13,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:13:13,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:13:13,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:13:13,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:13:13,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:13:13,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:13:13,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:13:13,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:13:13,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:13:13,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:13:13,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:13:13,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:13:13,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:13:13,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:13:13,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:13:13,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:13:13,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:13:13,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:13:13,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:13:13,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:13:13,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:13:13,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:13:13,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:13:13,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:13:13,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:13:13,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:13:13,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:13:13,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:13:13,316 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:13:13,340 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:13:13,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:13:13,341 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:13:13,341 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:13:13,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:13:13,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:13:13,342 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:13:13,343 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:13:13,343 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:13:13,343 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:13:13,344 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:13:13,344 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:13:13,344 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:13:13,344 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:13:13,345 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:13:13,345 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:13:13,345 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:13:13,346 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:13:13,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:13:13,347 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:13:13,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:13:13,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:13:13,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:13:13,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:13:13,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:13:13,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:13:13,349 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:13:13,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:13:13,349 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:13:13,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:13:13,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:13:13,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:13:13,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:13:13,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:13:13,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:13:13,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:13:13,352 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:13:13,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:13:13,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:13:13,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:13:13,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:13:13,353 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52fc70d7844651686a4c27e057f507f0498e7d5f7c17f07a035699d1630f6ea2 [2021-11-25 19:13:13,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:13:13,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:13:13,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:13:13,667 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:13:13,668 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:13:13,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/forester-heap/dll-reverse.i [2021-11-25 19:13:13,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/data/4735010ef/bd65ac6f9240458997684192f6e24439/FLAGa00f3ac0e [2021-11-25 19:13:14,318 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:13:14,319 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/sv-benchmarks/c/forester-heap/dll-reverse.i [2021-11-25 19:13:14,341 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/data/4735010ef/bd65ac6f9240458997684192f6e24439/FLAGa00f3ac0e [2021-11-25 19:13:14,587 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/data/4735010ef/bd65ac6f9240458997684192f6e24439 [2021-11-25 19:13:14,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:13:14,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:13:14,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:13:14,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:13:14,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:13:14,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:13:14" (1/1) ... [2021-11-25 19:13:14,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cfa662d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:14, skipping insertion in model container [2021-11-25 19:13:14,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:13:14" (1/1) ... [2021-11-25 19:13:14,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:13:14,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:13:15,011 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_57141699-676c-40e3-8494-bb21ce50a8d6/sv-benchmarks/c/forester-heap/dll-reverse.i[22309,22322] [2021-11-25 19:13:15,014 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_57141699-676c-40e3-8494-bb21ce50a8d6/sv-benchmarks/c/forester-heap/dll-reverse.i[22394,22407] [2021-11-25 19:13:15,020 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_57141699-676c-40e3-8494-bb21ce50a8d6/sv-benchmarks/c/forester-heap/dll-reverse.i[22924,22937] [2021-11-25 19:13:15,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:13:15,031 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:13:15,067 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_57141699-676c-40e3-8494-bb21ce50a8d6/sv-benchmarks/c/forester-heap/dll-reverse.i[22309,22322] [2021-11-25 19:13:15,068 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_57141699-676c-40e3-8494-bb21ce50a8d6/sv-benchmarks/c/forester-heap/dll-reverse.i[22394,22407] [2021-11-25 19:13:15,073 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_57141699-676c-40e3-8494-bb21ce50a8d6/sv-benchmarks/c/forester-heap/dll-reverse.i[22924,22937] [2021-11-25 19:13:15,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:13:15,105 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:13:15,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:15 WrapperNode [2021-11-25 19:13:15,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:13:15,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:13:15,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:13:15,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:13:15,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:15" (1/1) ... [2021-11-25 19:13:15,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:15" (1/1) ... [2021-11-25 19:13:15,152 INFO L137 Inliner]: procedures = 119, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 144 [2021-11-25 19:13:15,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:13:15,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:13:15,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:13:15,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:13:15,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:15" (1/1) ... [2021-11-25 19:13:15,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:15" (1/1) ... [2021-11-25 19:13:15,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:15" (1/1) ... [2021-11-25 19:13:15,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:15" (1/1) ... [2021-11-25 19:13:15,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:15" (1/1) ... [2021-11-25 19:13:15,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:15" (1/1) ... [2021-11-25 19:13:15,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:15" (1/1) ... [2021-11-25 19:13:15,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:13:15,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:13:15,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:13:15,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:13:15,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:15" (1/1) ... [2021-11-25 19:13:15,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:13:15,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:15,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:13:15,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:13:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:13:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:13:15,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:13:15,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:13:15,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:13:15,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:13:15,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:13:15,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:13:15,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:13:15,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:13:15,442 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:13:15,444 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:13:15,802 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:13:15,895 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:13:15,899 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-25 19:13:15,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:13:15 BoogieIcfgContainer [2021-11-25 19:13:15,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:13:15,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:13:15,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:13:15,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:13:15,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:13:14" (1/3) ... [2021-11-25 19:13:15,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681f59be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:13:15, skipping insertion in model container [2021-11-25 19:13:15,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:15" (2/3) ... [2021-11-25 19:13:15,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681f59be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:13:15, skipping insertion in model container [2021-11-25 19:13:15,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:13:15" (3/3) ... [2021-11-25 19:13:15,912 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-reverse.i [2021-11-25 19:13:15,921 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:13:15,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 19:13:15,980 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:13:15,988 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:13:15,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 19:13:16,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:16,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:13:16,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:16,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:13:16,021 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:16,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:16,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1014884411, now seen corresponding path program 1 times [2021-11-25 19:13:16,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:16,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047110360] [2021-11-25 19:13:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:16,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:16,251 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:16,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047110360] [2021-11-25 19:13:16,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047110360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:16,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:16,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:13:16,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813264023] [2021-11-25 19:13:16,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:16,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:13:16,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:16,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:13:16,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:13:16,289 INFO L87 Difference]: Start difference. First operand has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) 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) [2021-11-25 19:13:16,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:16,347 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2021-11-25 19:13:16,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:13:16,350 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) 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 [2021-11-25 19:13:16,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:16,357 INFO L225 Difference]: With dead ends: 47 [2021-11-25 19:13:16,358 INFO L226 Difference]: Without dead ends: 23 [2021-11-25 19:13:16,361 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:13:16,364 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:16,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:13:16,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-25 19:13:16,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-25 19:13:16,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-11-25 19:13:16,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-11-25 19:13:16,397 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2021-11-25 19:13:16,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:16,397 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-11-25 19:13:16,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) 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) [2021-11-25 19:13:16,398 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-11-25 19:13:16,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 19:13:16,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:16,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:16,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:13:16,399 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:16,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:16,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1773969138, now seen corresponding path program 1 times [2021-11-25 19:13:16,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:16,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683224356] [2021-11-25 19:13:16,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:16,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:16,554 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:16,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683224356] [2021-11-25 19:13:16,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683224356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:16,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:16,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:13:16,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475639929] [2021-11-25 19:13:16,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:16,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:13:16,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:16,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:13:16,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:13:16,563 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:16,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:16,931 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-11-25 19:13:16,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:13:16,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 19:13:16,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:16,933 INFO L225 Difference]: With dead ends: 52 [2021-11-25 19:13:16,933 INFO L226 Difference]: Without dead ends: 33 [2021-11-25 19:13:16,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:13:16,935 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:16,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 55 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:13:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-25 19:13:16,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2021-11-25 19:13:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:16,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-11-25 19:13:16,943 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 8 [2021-11-25 19:13:16,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:16,943 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-11-25 19:13:16,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:16,944 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-11-25 19:13:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 19:13:16,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:16,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:16,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:13:16,945 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:16,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:16,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1773970388, now seen corresponding path program 1 times [2021-11-25 19:13:16,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:16,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036982155] [2021-11-25 19:13:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:16,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:17,003 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:17,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036982155] [2021-11-25 19:13:17,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036982155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:17,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:17,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:13:17,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580711173] [2021-11-25 19:13:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:17,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:13:17,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:13:17,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:13:17,007 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:17,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:17,133 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-11-25 19:13:17,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:13:17,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 19:13:17,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:17,135 INFO L225 Difference]: With dead ends: 47 [2021-11-25 19:13:17,135 INFO L226 Difference]: Without dead ends: 37 [2021-11-25 19:13:17,136 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:13:17,137 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:17,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 28 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:13:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-25 19:13:17,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2021-11-25 19:13:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 32 states have internal predecessors, (38), 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) [2021-11-25 19:13:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-11-25 19:13:17,146 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 8 [2021-11-25 19:13:17,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:17,147 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-11-25 19:13:17,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:13:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-11-25 19:13:17,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 19:13:17,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:17,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:17,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:13:17,151 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:17,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:17,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1654140644, now seen corresponding path program 1 times [2021-11-25 19:13:17,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:17,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136828582] [2021-11-25 19:13:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:17,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:17,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:17,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:17,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136828582] [2021-11-25 19:13:17,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136828582] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:13:17,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027126073] [2021-11-25 19:13:17,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:17,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:17,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:17,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:17,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:13:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:17,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-25 19:13:17,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:17,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:17,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:17,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:17,723 INFO L388 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-25 19:13:17,733 INFO L388 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 [2021-11-25 19:13:17,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:17,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:17,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:17,757 INFO L388 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-25 19:13:18,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 284 treesize of output 259 [2021-11-25 19:13:18,315 INFO L354 Elim1Store]: treesize reduction 50, result has 9.1 percent of original size [2021-11-25 19:13:18,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 245 treesize of output 240 [2021-11-25 19:13:18,363 INFO L388 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 214 treesize of output 212 [2021-11-25 19:13:18,407 INFO L354 Elim1Store]: treesize reduction 50, result has 9.1 percent of original size [2021-11-25 19:13:18,407 INFO L388 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 2 case distinctions, treesize of input 238 treesize of output 238 [2021-11-25 19:13:18,442 INFO L388 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 214 treesize of output 212 [2021-11-25 19:13:18,464 INFO L388 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 212 treesize of output 210 [2021-11-25 19:13:18,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:18,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:18,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 214 treesize of output 211 [2021-11-25 19:13:18,546 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:13:18,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 239 treesize of output 254 [2021-11-25 19:13:18,608 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:13:18,609 INFO L388 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 1 case distinctions, treesize of input 262 treesize of output 262 [2021-11-25 19:13:18,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:18,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:18,651 INFO L388 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 219 treesize of output 219 [2021-11-25 19:13:18,700 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-25 19:13:18,701 INFO L388 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 1 case distinctions, treesize of input 199 treesize of output 210 [2021-11-25 19:13:18,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 5 treesize of output 3 [2021-11-25 19:13:18,861 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-25 19:13:18,862 INFO L388 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 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 19:13:18,869 INFO L388 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 5 treesize of output 3 [2021-11-25 19:13:18,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 5 treesize of output 3 [2021-11-25 19:13:18,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:18,894 INFO L388 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 19 treesize of output 13 [2021-11-25 19:13:18,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-25 19:13:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:18,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:19,164 INFO L354 Elim1Store]: treesize reduction 19, result has 68.9 percent of original size [2021-11-25 19:13:19,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 301 treesize of output 325 [2021-11-25 19:13:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:20,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027126073] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:20,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2029913763] [2021-11-25 19:13:20,431 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-25 19:13:20,432 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:13:20,436 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:13:20,441 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:13:20,441 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:13:20,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,483 INFO L388 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 [2021-11-25 19:13:20,515 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 19:13:20,516 INFO L388 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 [2021-11-25 19:13:20,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,540 INFO L388 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 [2021-11-25 19:13:20,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 19:13:20,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,560 INFO L388 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 [2021-11-25 19:13:20,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 506 treesize of output 507 [2021-11-25 19:13:20,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 514 treesize of output 443 [2021-11-25 19:13:20,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 398 treesize of output 401 [2021-11-25 19:13:20,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 468 treesize of output 401 [2021-11-25 19:13:20,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 366 treesize of output 373 [2021-11-25 19:13:20,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:20,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:20,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:21,040 INFO L354 Elim1Store]: treesize reduction 56, result has 31.7 percent of original size [2021-11-25 19:13:21,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 214 treesize of output 158 [2021-11-25 19:13:21,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,081 INFO L388 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 [2021-11-25 19:13:21,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,110 INFO L388 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 [2021-11-25 19:13:21,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 63 [2021-11-25 19:13:21,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 58 treesize of output 48 [2021-11-25 19:13:21,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 48 [2021-11-25 19:13:21,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-25 19:13:21,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-11-25 19:13:21,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2021-11-25 19:13:21,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:21,358 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-25 19:13:21,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 121 treesize of output 84 [2021-11-25 19:13:21,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,386 INFO L388 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2021-11-25 19:13:21,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:21,414 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:13:21,415 INFO L388 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 43 [2021-11-25 19:13:21,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:21,436 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:13:21,437 INFO L388 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2021-11-25 19:13:21,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:21,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:21,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:21,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:21,804 INFO L354 Elim1Store]: treesize reduction 214, result has 19.9 percent of original size [2021-11-25 19:13:21,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 421 treesize of output 425 [2021-11-25 19:13:21,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:21,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:21,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:21,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:21,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:22,037 INFO L354 Elim1Store]: treesize reduction 135, result has 37.2 percent of original size [2021-11-25 19:13:22,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 429 treesize of output 439 [2021-11-25 19:13:22,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:22,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:22,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:22,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:22,105 INFO L354 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2021-11-25 19:13:22,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 369 treesize of output 355 [2021-11-25 19:13:22,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:22,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:22,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:22,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:22,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:22,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:22,153 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-25 19:13:22,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 373 treesize of output 355 [2021-11-25 19:13:22,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:22,667 INFO L388 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:13:22,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:22,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-25 19:13:22,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:22,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-25 19:13:22,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:22,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-25 19:13:22,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:22,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-25 19:13:22,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:22,719 INFO L388 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-25 19:13:22,740 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:13:23,387 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '419#(and (= |ULTIMATE.start_main_~head~0#1.offset| |ULTIMATE.start_main_~x~0#1.offset|) (= 2 |ULTIMATE.start_main_~t1~0#1|) (= |ULTIMATE.start_main_~x~0#1.base| |ULTIMATE.start_main_~head~0#1.base|) (= |ULTIMATE.start_main_~head~0#1.offset| |ULTIMATE.start_main_~prev~0#1.offset|) (= |ULTIMATE.start_main_~prev~0#1.base| |ULTIMATE.start_main_~head~0#1.base|) (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 8)) |ULTIMATE.start_main_~t2~0#1|) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~t2~0#1| 1)) (= |ULTIMATE.start_main_~t1~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ 8 |ULTIMATE.start_main_~x~0#1.offset|))) (or (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (not (= |ULTIMATE.start_main_~x~0#1.offset| 0))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:13:23,387 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:13:23,388 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:13:23,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-25 19:13:23,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910309496] [2021-11-25 19:13:23,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:13:23,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 19:13:23,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:23,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 19:13:23,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=230, Unknown=2, NotChecked=0, Total=306 [2021-11-25 19:13:23,390 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-11-25 19:13:24,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:24,122 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2021-11-25 19:13:24,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:13:24,123 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 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 14 [2021-11-25 19:13:24,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:24,124 INFO L225 Difference]: With dead ends: 44 [2021-11-25 19:13:24,124 INFO L226 Difference]: Without dead ends: 38 [2021-11-25 19:13:24,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=317, Unknown=2, NotChecked=0, Total=420 [2021-11-25 19:13:24,126 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:24,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 94 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 31 Unchecked, 0.7s Time] [2021-11-25 19:13:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-25 19:13:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2021-11-25 19:13:24,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 36 states have internal predecessors, (42), 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) [2021-11-25 19:13:24,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2021-11-25 19:13:24,135 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 14 [2021-11-25 19:13:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:24,135 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2021-11-25 19:13:24,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-11-25 19:13:24,137 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2021-11-25 19:13:24,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 19:13:24,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:24,138 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:24,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:24,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:24,353 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:24,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:24,353 INFO L85 PathProgramCache]: Analyzing trace with hash 186699056, now seen corresponding path program 2 times [2021-11-25 19:13:24,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:24,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846437] [2021-11-25 19:13:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:24,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:24,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:24,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:24,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846437] [2021-11-25 19:13:24,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846437] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:13:24,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702053366] [2021-11-25 19:13:24,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:13:24,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:24,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:24,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:24,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57141699-676c-40e3-8494-bb21ce50a8d6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:13:25,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:13:25,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:13:25,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-25 19:13:25,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:25,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:25,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:25,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:25,334 INFO L388 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-25 19:13:25,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:25,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:25,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:25,342 INFO L388 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-25 19:13:25,346 INFO L388 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 [2021-11-25 19:13:25,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 294 treesize of output 269 [2021-11-25 19:13:25,694 INFO L354 Elim1Store]: treesize reduction 50, result has 9.1 percent of original size [2021-11-25 19:13:25,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 255 treesize of output 250 [2021-11-25 19:13:25,740 INFO L354 Elim1Store]: treesize reduction 50, result has 9.1 percent of original size [2021-11-25 19:13:25,741 INFO L388 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 2 case distinctions, treesize of input 250 treesize of output 250 [2021-11-25 19:13:25,783 INFO L388 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 226 treesize of output 224 [2021-11-25 19:13:25,797 INFO L388 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 224 treesize of output 222 [2021-11-25 19:13:25,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:25,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:25,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 226 treesize of output 223 [2021-11-25 19:13:25,844 INFO L388 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 223 treesize of output 221 [2021-11-25 19:13:25,881 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:13:25,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 221 treesize of output 230 [2021-11-25 19:13:25,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:25,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:25,918 INFO L388 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 208 treesize of output 208 [2021-11-25 19:13:25,955 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:13:25,956 INFO L388 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 1 case distinctions, treesize of input 204 treesize of output 209 [2021-11-25 19:13:26,000 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:13:26,001 INFO L388 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 1 case distinctions, treesize of input 212 treesize of output 219 [2021-11-25 19:13:26,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:26,040 INFO L388 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 13 treesize of output 17 [2021-11-25 19:13:26,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-11-25 19:13:26,171 INFO L388 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 5 treesize of output 3 [2021-11-25 19:13:26,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 5 treesize of output 3 [2021-11-25 19:13:26,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:26,187 INFO L388 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 19 treesize of output 13 [2021-11-25 19:13:26,204 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-25 19:13:26,204 INFO L388 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 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 19:13:26,210 INFO L388 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-11-25 19:13:26,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2021-11-25 19:13:26,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-25 19:13:26,326 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 19:13:26,326 INFO L388 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 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2021-11-25 19:13:26,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:26,332 INFO L388 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-25 19:13:26,338 INFO L388 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-25 19:13:26,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 50 treesize of output 38 [2021-11-25 19:13:26,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-11-25 19:13:26,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2021-11-25 19:13:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:13:26,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:26,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2021-11-25 19:13:26,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2021-11-25 19:13:26,513 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_527 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_527) |c_ULTIMATE.start_main_~prev~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~prev~0#1.offset|)) 1)) is different from false [2021-11-25 19:13:26,525 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_527 (Array Int Int)) (v_ArrVal_519 Int) (v_ArrVal_518 Int)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_518) (+ |c_ULTIMATE.start_main_~x~0#1.offset| 4) v_ArrVal_519)) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_527) |c_ULTIMATE.start_main_~x~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~x~0#1.offset|)) 1)) is different from false [2021-11-25 19:13:26,725 INFO L354 Elim1Store]: treesize reduction 19, result has 72.5 percent of original size [2021-11-25 19:13:26,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 311 treesize of output 333 [2021-11-25 19:13:26,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:26,794 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:26,794 INFO L388 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 2 case distinctions, treesize of input 14 treesize of output 19 [2021-11-25 19:13:27,309 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-11-25 19:13:27,310 INFO L388 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 2 case distinctions, treesize of input 51 treesize of output 57 [2021-11-25 19:13:27,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 72 [2021-11-25 19:13:27,319 INFO L388 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 37 treesize of output 33 [2021-11-25 19:13:27,422 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:27,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1209 treesize of output 1211 [2021-11-25 19:13:27,445 INFO L388 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 1398 treesize of output 1382 [2021-11-25 19:13:27,463 INFO L388 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 1382 treesize of output 1350 [2021-11-25 19:13:27,481 INFO L388 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 1452 treesize of output 1444 [2021-11-25 19:13:28,411 INFO L388 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 218 treesize of output 210 [2021-11-25 19:13:28,712 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:13:28,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 277 treesize of output 281 [2021-11-25 19:13:41,917 WARN L227 SmtUtils]: Spent 11.94s on a formula simplification. DAG size of input: 107 DAG size of output: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:13:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-25 19:13:42,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702053366] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:42,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1547666756] [2021-11-25 19:13:43,002 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-25 19:13:43,004 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:13:43,004 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:13:43,005 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:13:43,005 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:13:43,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,052 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-25 19:13:43,053 INFO L388 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 [2021-11-25 19:13:43,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,063 INFO L388 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 [2021-11-25 19:13:43,093 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:13:43,094 INFO L388 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 [2021-11-25 19:13:43,136 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 19:13:43,136 INFO L388 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 [2021-11-25 19:13:43,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,157 INFO L388 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 [2021-11-25 19:13:43,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 506 treesize of output 507 [2021-11-25 19:13:43,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 514 treesize of output 443 [2021-11-25 19:13:43,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 398 treesize of output 401 [2021-11-25 19:13:43,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:43,672 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-25 19:13:43,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 494 treesize of output 469 [2021-11-25 19:13:43,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 507 treesize of output 440 [2021-11-25 19:13:43,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 405 treesize of output 412 [2021-11-25 19:13:43,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 345 treesize of output 349 [2021-11-25 19:13:43,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:43,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:13:44,034 INFO L354 Elim1Store]: treesize reduction 355, result has 10.1 percent of original size [2021-11-25 19:13:44,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 323 treesize of output 259 [2021-11-25 19:13:44,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:44,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:44,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:44,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:44,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:44,222 INFO L354 Elim1Store]: treesize reduction 320, result has 10.4 percent of original size [2021-11-25 19:13:44,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 279 treesize of output 264