./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.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_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/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_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/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_be6213f7-7317-400c-a8c2-0a91e878eafe/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 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:12:13,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:12:13,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:12:13,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:12:13,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:12:13,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:12:13,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:12:13,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:12:13,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:12:13,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:12:13,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:12:13,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:12:13,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:12:13,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:12:13,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:12:13,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:12:13,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:12:13,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:12:13,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:12:13,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:12:13,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:12:13,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:12:13,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:12:13,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:12:13,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:12:13,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:12:13,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:12:13,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:12:13,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:12:13,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:12:13,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:12:13,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:12:13,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:12:13,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:12:13,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:12:13,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:12:13,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:12:13,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:12:13,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:12:13,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:12:13,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:12:13,183 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:12:13,209 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:12:13,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:12:13,209 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:12:13,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:12:13,210 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:12:13,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:12:13,210 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:12:13,211 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:12:13,211 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:12:13,211 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:12:13,211 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:12:13,211 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:12:13,211 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:12:13,212 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:12:13,212 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:12:13,212 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:12:13,212 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:12:13,212 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:12:13,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:12:13,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:12:13,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:12:13,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:12:13,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:12:13,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:12:13,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:12:13,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:12:13,214 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:12:13,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:12:13,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:12:13,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:12:13,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:12:13,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:12:13,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:12:13,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:12:13,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:12:13,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:12:13,216 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:12:13,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:12:13,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:12:13,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:12:13,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:12:13,217 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_be6213f7-7317-400c-a8c2-0a91e878eafe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2021-11-25 19:12:13,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:12:13,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:12:13,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:12:13,486 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:12:13,487 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:12:13,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-11-25 19:12:13,561 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/data/17cf5526c/fa6a98df3aae485392ddc80976945bd7/FLAG42c8d7e9b [2021-11-25 19:12:14,019 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:12:14,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-11-25 19:12:14,033 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/data/17cf5526c/fa6a98df3aae485392ddc80976945bd7/FLAG42c8d7e9b [2021-11-25 19:12:14,358 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/data/17cf5526c/fa6a98df3aae485392ddc80976945bd7 [2021-11-25 19:12:14,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:12:14,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:12:14,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:12:14,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:12:14,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:12:14,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:12:14" (1/1) ... [2021-11-25 19:12:14,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c10965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:14, skipping insertion in model container [2021-11-25 19:12:14,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:12:14" (1/1) ... [2021-11-25 19:12:14,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:12:14,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:12:14,730 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_be6213f7-7317-400c-a8c2-0a91e878eafe/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-11-25 19:12:14,742 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_be6213f7-7317-400c-a8c2-0a91e878eafe/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-11-25 19:12:14,746 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_be6213f7-7317-400c-a8c2-0a91e878eafe/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-11-25 19:12:14,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:12:14,769 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:12:14,838 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_be6213f7-7317-400c-a8c2-0a91e878eafe/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-11-25 19:12:14,842 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_be6213f7-7317-400c-a8c2-0a91e878eafe/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-11-25 19:12:14,844 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_be6213f7-7317-400c-a8c2-0a91e878eafe/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-11-25 19:12:14,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:12:14,886 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:12:14,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:14 WrapperNode [2021-11-25 19:12:14,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:12:14,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:12:14,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:12:14,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:12:14,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:14" (1/1) ... [2021-11-25 19:12:14,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:14" (1/1) ... [2021-11-25 19:12:14,960 INFO L137 Inliner]: procedures = 119, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 112 [2021-11-25 19:12:14,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:12:14,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:12:14,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:12:14,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:12:14,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:14" (1/1) ... [2021-11-25 19:12:14,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:14" (1/1) ... [2021-11-25 19:12:14,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:14" (1/1) ... [2021-11-25 19:12:14,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:14" (1/1) ... [2021-11-25 19:12:15,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:14" (1/1) ... [2021-11-25 19:12:15,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:14" (1/1) ... [2021-11-25 19:12:15,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:14" (1/1) ... [2021-11-25 19:12:15,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:12:15,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:12:15,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:12:15,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:12:15,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:14" (1/1) ... [2021-11-25 19:12:15,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:12:15,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:15,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:12:15,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:12:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:12:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:12:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:12:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:12:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:12:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:12:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:12:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:12:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:12:15,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:12:15,253 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:12:15,255 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:12:15,522 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:12:15,589 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:12:15,589 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-25 19:12:15,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:12:15 BoogieIcfgContainer [2021-11-25 19:12:15,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:12:15,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:12:15,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:12:15,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:12:15,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:12:14" (1/3) ... [2021-11-25 19:12:15,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ec0ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:12:15, skipping insertion in model container [2021-11-25 19:12:15,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:14" (2/3) ... [2021-11-25 19:12:15,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ec0ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:12:15, skipping insertion in model container [2021-11-25 19:12:15,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:12:15" (3/3) ... [2021-11-25 19:12:15,602 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-11-25 19:12:15,607 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:12:15,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 19:12:15,652 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:12:15,659 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 19:12:15,659 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 19:12:15,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:15,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:12:15,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:15,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:12:15,689 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:15,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:15,695 INFO L85 PathProgramCache]: Analyzing trace with hash 137298967, now seen corresponding path program 1 times [2021-11-25 19:12:15,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:15,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901996484] [2021-11-25 19:12:15,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:15,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:15,871 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 19:12:15,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:15,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901996484] [2021-11-25 19:12:15,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901996484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:15,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:15,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:12:15,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471227775] [2021-11-25 19:12:15,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:15,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:12:15,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:12:15,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:12:15,909 INFO L87 Difference]: Start difference. First operand has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:15,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:15,983 INFO L93 Difference]: Finished difference Result 41 states and 63 transitions. [2021-11-25 19:12:15,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:12:15,986 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 19:12:15,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:15,994 INFO L225 Difference]: With dead ends: 41 [2021-11-25 19:12:15,994 INFO L226 Difference]: Without dead ends: 20 [2021-11-25 19:12:15,997 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 19:12:16,001 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:16,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:12:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-25 19:12:16,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-25 19:12:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-11-25 19:12:16,033 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 5 [2021-11-25 19:12:16,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:16,034 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-11-25 19:12:16,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-11-25 19:12:16,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:12:16,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:16,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:12:16,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:12:16,036 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 19:12:16,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash -51068352, now seen corresponding path program 1 times [2021-11-25 19:12:16,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:16,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780110009] [2021-11-25 19:12:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:16,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:16,109 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 19:12:16,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:16,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780110009] [2021-11-25 19:12:16,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780110009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:16,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:16,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:12:16,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829570818] [2021-11-25 19:12:16,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:16,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:12:16,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:16,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:12:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:12:16,115 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:16,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:16,178 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-11-25 19:12:16,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:12:16,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 19:12:16,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:16,183 INFO L225 Difference]: With dead ends: 21 [2021-11-25 19:12:16,184 INFO L226 Difference]: Without dead ends: 19 [2021-11-25 19:12:16,185 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 19:12:16,187 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:16,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:12:16,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-25 19:12:16,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-11-25 19:12:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-11-25 19:12:16,203 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2021-11-25 19:12:16,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:16,203 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-11-25 19:12:16,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:16,204 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-11-25 19:12:16,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 19:12:16,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:16,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:16,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:12:16,209 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 19:12:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:16,210 INFO L85 PathProgramCache]: Analyzing trace with hash -954906231, now seen corresponding path program 1 times [2021-11-25 19:12:16,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:16,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879666063] [2021-11-25 19:12:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:16,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:16,340 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 19:12:16,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:16,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879666063] [2021-11-25 19:12:16,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879666063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:16,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:16,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:12:16,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649690704] [2021-11-25 19:12:16,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:16,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:12:16,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:16,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:12:16,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:12:16,343 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 19:12:16,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:16,599 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-11-25 19:12:16,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:12:16,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-11-25 19:12:16,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:16,603 INFO L225 Difference]: With dead ends: 42 [2021-11-25 19:12:16,603 INFO L226 Difference]: Without dead ends: 40 [2021-11-25 19:12:16,604 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 19:12:16,605 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:16,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 46 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:12:16,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-25 19:12:16,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 25. [2021-11-25 19:12:16,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:16,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-11-25 19:12:16,612 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 9 [2021-11-25 19:12:16,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:16,613 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-11-25 19:12:16,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 19:12:16,613 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-11-25 19:12:16,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:12:16,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:16,614 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:16,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:12:16,614 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:16,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:16,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2052813532, now seen corresponding path program 1 times [2021-11-25 19:12:16,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:16,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113776789] [2021-11-25 19:12:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:16,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:17,013 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:17,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113776789] [2021-11-25 19:12:17,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113776789] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:12:17,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334749573] [2021-11-25 19:12:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:17,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:17,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:17,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:17,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:12:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:17,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-25 19:12:17,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:17,352 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:12:17,370 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 19:12:17,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:17,672 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 174 [2021-11-25 19:12:17,736 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:12:17,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 154 treesize of output 165 [2021-11-25 19:12:17,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:17,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 154 [2021-11-25 19:12:17,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:17,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 155 [2021-11-25 19:12:17,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:17,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 136 [2021-11-25 19:12:17,958 INFO L354 Elim1Store]: treesize reduction 81, result has 30.8 percent of original size [2021-11-25 19:12:17,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 127 treesize of output 157 [2021-11-25 19:12:18,109 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 22 treesize of output 16 [2021-11-25 19:12:18,139 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-11-25 19:12:18,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 26 [2021-11-25 19:12:18,236 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2021-11-25 19:12:18,242 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-25 19:12:18,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1776923253] [2021-11-25 19:12:18,263 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:12:18,264 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:12:18,268 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:12:18,274 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:12:18,274 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:12:18,316 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@29ecad7b at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:401) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:154) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:142) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:110) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:95) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:90) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 19:12:18,322 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:12:18,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-25 19:12:18,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675944382] [2021-11-25 19:12:18,322 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:18,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:12:18,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:18,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:12:18,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:12:18,327 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:18,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:12:18,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:12:18,333 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:18,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:12:18,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:18,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:18,552 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@29ecad7b at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 19:12:18,554 INFO L158 Benchmark]: Toolchain (without parser) took 4192.19ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 61.6MB in the beginning and 37.3MB in the end (delta: 24.3MB). Peak memory consumption was 43.5MB. Max. memory is 16.1GB. [2021-11-25 19:12:18,554 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:12:18,555 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.00ms. Allocated memory is still 104.9MB. Free memory was 61.4MB in the beginning and 71.6MB in the end (delta: -10.2MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2021-11-25 19:12:18,555 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.32ms. Allocated memory is still 104.9MB. Free memory was 71.6MB in the beginning and 69.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:12:18,555 INFO L158 Benchmark]: Boogie Preprocessor took 64.15ms. Allocated memory is still 104.9MB. Free memory was 69.6MB in the beginning and 67.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:12:18,556 INFO L158 Benchmark]: RCFGBuilder took 566.05ms. Allocated memory is still 104.9MB. Free memory was 67.9MB in the beginning and 50.4MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-25 19:12:18,556 INFO L158 Benchmark]: TraceAbstraction took 2959.70ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 49.9MB in the beginning and 37.3MB in the end (delta: 12.6MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2021-11-25 19:12:18,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.00ms. Allocated memory is still 104.9MB. Free memory was 61.4MB in the beginning and 71.6MB in the end (delta: -10.2MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.32ms. Allocated memory is still 104.9MB. Free memory was 71.6MB in the beginning and 69.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.15ms. Allocated memory is still 104.9MB. Free memory was 69.6MB in the beginning and 67.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 566.05ms. Allocated memory is still 104.9MB. Free memory was 67.9MB in the beginning and 50.4MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2959.70ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 49.9MB in the beginning and 37.3MB in the end (delta: 12.6MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@29ecad7b de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@29ecad7b: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-25 19:12:18,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/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_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/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 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:12:21,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:12:21,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:12:21,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:12:21,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:12:21,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:12:21,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:12:21,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:12:21,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:12:21,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:12:21,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:12:21,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:12:21,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:12:21,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:12:21,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:12:21,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:12:21,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:12:21,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:12:21,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:12:21,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:12:21,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:12:21,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:12:21,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:12:21,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:12:21,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:12:21,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:12:21,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:12:21,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:12:21,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:12:21,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:12:21,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:12:21,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:12:21,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:12:21,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:12:21,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:12:21,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:12:21,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:12:21,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:12:21,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:12:21,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:12:21,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:12:21,156 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 19:12:21,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:12:21,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:12:21,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:12:21,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:12:21,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:12:21,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:12:21,203 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:12:21,204 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:12:21,204 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:12:21,204 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:12:21,205 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:12:21,205 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:12:21,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:12:21,207 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:12:21,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:12:21,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:12:21,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:12:21,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:12:21,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:12:21,208 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:12:21,209 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:12:21,209 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:12:21,209 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:12:21,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:12:21,209 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:12:21,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:12:21,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:12:21,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:12:21,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:12:21,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:12:21,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:12:21,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:12:21,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:12:21,212 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:12:21,212 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:12:21,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:12:21,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:12:21,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:12:21,213 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_be6213f7-7317-400c-a8c2-0a91e878eafe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95643fe6222ef6bf06c5549a97aa2ed3c03be56764b1592b76d2122ae82e7069 [2021-11-25 19:12:21,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:12:21,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:12:21,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:12:21,638 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:12:21,639 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:12:21,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-11-25 19:12:21,714 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/data/d9799a1d6/3223a189b31247fdb25a720356572721/FLAG0f4bd896a [2021-11-25 19:12:22,404 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:12:22,404 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i [2021-11-25 19:12:22,416 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/data/d9799a1d6/3223a189b31247fdb25a720356572721/FLAG0f4bd896a [2021-11-25 19:12:22,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/data/d9799a1d6/3223a189b31247fdb25a720356572721 [2021-11-25 19:12:22,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:12:22,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:12:22,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:12:22,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:12:22,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:12:22,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:12:22" (1/1) ... [2021-11-25 19:12:22,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf3c702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:22, skipping insertion in model container [2021-11-25 19:12:22,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:12:22" (1/1) ... [2021-11-25 19:12:22,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:12:22,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:12:22,755 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_be6213f7-7317-400c-a8c2-0a91e878eafe/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-11-25 19:12:22,758 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_be6213f7-7317-400c-a8c2-0a91e878eafe/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-11-25 19:12:22,760 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_be6213f7-7317-400c-a8c2-0a91e878eafe/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-11-25 19:12:22,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:12:22,775 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:12:22,813 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_be6213f7-7317-400c-a8c2-0a91e878eafe/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22480,22493] [2021-11-25 19:12:22,814 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_be6213f7-7317-400c-a8c2-0a91e878eafe/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22552,22565] [2021-11-25 19:12:22,816 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_be6213f7-7317-400c-a8c2-0a91e878eafe/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-2.i[22720,22733] [2021-11-25 19:12:22,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:12:22,861 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:12:22,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:22 WrapperNode [2021-11-25 19:12:22,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:12:22,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:12:22,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:12:22,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:12:22,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:22" (1/1) ... [2021-11-25 19:12:22,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:22" (1/1) ... [2021-11-25 19:12:22,909 INFO L137 Inliner]: procedures = 122, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 111 [2021-11-25 19:12:22,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:12:22,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:12:22,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:12:22,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:12:22,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:22" (1/1) ... [2021-11-25 19:12:22,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:22" (1/1) ... [2021-11-25 19:12:22,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:22" (1/1) ... [2021-11-25 19:12:22,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:22" (1/1) ... [2021-11-25 19:12:22,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:22" (1/1) ... [2021-11-25 19:12:22,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:22" (1/1) ... [2021-11-25 19:12:22,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:22" (1/1) ... [2021-11-25 19:12:22,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:12:22,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:12:22,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:12:22,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:12:22,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:22" (1/1) ... [2021-11-25 19:12:22,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:12:22,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:22,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:12:23,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:12:23,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 19:12:23,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:12:23,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:12:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:12:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:12:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:12:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 19:12:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:12:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:12:23,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:12:23,184 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:12:23,201 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:12:23,547 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:12:23,553 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:12:23,553 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-25 19:12:23,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:12:23 BoogieIcfgContainer [2021-11-25 19:12:23,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:12:23,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:12:23,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:12:23,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:12:23,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:12:22" (1/3) ... [2021-11-25 19:12:23,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324c1ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:12:23, skipping insertion in model container [2021-11-25 19:12:23,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:22" (2/3) ... [2021-11-25 19:12:23,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324c1ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:12:23, skipping insertion in model container [2021-11-25 19:12:23,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:12:23" (3/3) ... [2021-11-25 19:12:23,570 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2021-11-25 19:12:23,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:12:23,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 19:12:23,622 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:12:23,629 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 19:12:23,629 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 19:12:23,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 24 states have (on average 1.875) internal successors, (45), 27 states have internal predecessors, (45), 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 19:12:23,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:12:23,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:23,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:12:23,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:23,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:23,661 INFO L85 PathProgramCache]: Analyzing trace with hash 889937798, now seen corresponding path program 1 times [2021-11-25 19:12:23,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:23,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572607758] [2021-11-25 19:12:23,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:23,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:23,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:23,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:23,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:12:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:23,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:12:23,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:23,809 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 19:12:23,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:23,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:23,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572607758] [2021-11-25 19:12:23,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572607758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:23,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:23,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:12:23,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227820573] [2021-11-25 19:12:23,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:23,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:12:23,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:23,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:12:23,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:12:23,846 INFO L87 Difference]: Start difference. First operand has 28 states, 24 states have (on average 1.875) internal successors, (45), 27 states have internal predecessors, (45), 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 19:12:23,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:23,861 INFO L93 Difference]: Finished difference Result 52 states and 83 transitions. [2021-11-25 19:12:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:12:23,863 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 19:12:23,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:23,870 INFO L225 Difference]: With dead ends: 52 [2021-11-25 19:12:23,871 INFO L226 Difference]: Without dead ends: 22 [2021-11-25 19:12:23,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 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 19:12:23,877 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:23,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:12:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-25 19:12:23,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-25 19:12:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 21 states have internal predecessors, (25), 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 19:12:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-25 19:12:23,909 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 6 [2021-11-25 19:12:23,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:23,909 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-25 19:12:23,910 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 19:12:23,910 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-25 19:12:23,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:12:23,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:23,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:12:23,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:24,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:24,124 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 19:12:24,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:24,127 INFO L85 PathProgramCache]: Analyzing trace with hash 889639888, now seen corresponding path program 1 times [2021-11-25 19:12:24,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:24,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047978112] [2021-11-25 19:12:24,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:24,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:24,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:24,158 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:24,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:12:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:24,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:12:24,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:24,267 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 19:12:24,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:24,267 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:24,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047978112] [2021-11-25 19:12:24,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047978112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:24,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:24,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:12:24,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349072289] [2021-11-25 19:12:24,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:24,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:12:24,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:24,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:12:24,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:12:24,271 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 19:12:24,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:24,483 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-11-25 19:12:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:12:24,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 19:12:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:24,484 INFO L225 Difference]: With dead ends: 30 [2021-11-25 19:12:24,485 INFO L226 Difference]: Without dead ends: 28 [2021-11-25 19:12:24,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 19:12:24,486 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 35 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:24,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 26 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:12:24,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-25 19:12:24,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2021-11-25 19:12:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:24,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-25 19:12:24,493 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 6 [2021-11-25 19:12:24,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:24,493 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-25 19:12:24,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 19:12:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-25 19:12:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 19:12:24,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:24,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:24,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:24,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:24,706 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 19:12:24,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:24,707 INFO L85 PathProgramCache]: Analyzing trace with hash -977335784, now seen corresponding path program 1 times [2021-11-25 19:12:24,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:24,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657267796] [2021-11-25 19:12:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:24,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:24,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:24,711 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:24,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:12:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:24,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:12:24,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:24,866 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:12:24,976 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 19 treesize of output 7 [2021-11-25 19:12:24,998 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 19:12:24,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:24,998 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:24,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657267796] [2021-11-25 19:12:24,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657267796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:24,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:24,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:12:24,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725990343] [2021-11-25 19:12:25,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:25,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:12:25,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:25,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:12:25,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:12:25,001 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 19:12:25,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:25,339 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2021-11-25 19:12:25,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:12:25,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2021-11-25 19:12:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:25,341 INFO L225 Difference]: With dead ends: 45 [2021-11-25 19:12:25,341 INFO L226 Difference]: Without dead ends: 43 [2021-11-25 19:12:25,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 19:12:25,343 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:25,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 64 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:12:25,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-25 19:12:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 26. [2021-11-25 19:12:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-11-25 19:12:25,351 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 9 [2021-11-25 19:12:25,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:25,352 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-11-25 19:12:25,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 19:12:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-11-25 19:12:25,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:12:25,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:25,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:25,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:25,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:25,565 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:25,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:25,566 INFO L85 PathProgramCache]: Analyzing trace with hash -822388269, now seen corresponding path program 1 times [2021-11-25 19:12:25,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:25,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386916614] [2021-11-25 19:12:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:25,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:25,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:25,569 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:25,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 19:12:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:25,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 19:12:25,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:25,747 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 19:12:25,761 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:12:25,840 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:12:25,840 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 16 treesize of output 16 [2021-11-25 19:12:25,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:25,859 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:12:25,866 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 16 treesize of output 18 [2021-11-25 19:12:25,995 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:12:25,995 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 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-25 19:12:26,010 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 8 treesize of output 7 [2021-11-25 19:12:26,050 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 7 treesize of output 3 [2021-11-25 19:12:26,193 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 15 treesize of output 7 [2021-11-25 19:12:26,210 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 19:12:26,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:26,309 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:12:26,310 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2021-11-25 19:12:26,333 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_103 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_105 (_ BitVec 32)) (v_arrayElimArr_2 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_2 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_103) v_ArrVal_105 v_arrayElimArr_2) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-25 19:12:26,456 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_99 (_ BitVec 32)) (v_ArrVal_103 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_105 (_ BitVec 32)) (v_arrayElimArr_2 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_100 (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_2 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_99)) v_ArrVal_100 v_ArrVal_103) v_ArrVal_105 v_arrayElimArr_2) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ArrVal_100)))))) is different from false [2021-11-25 19:12:26,522 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:12:26,523 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2021-11-25 19:12:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:12:26,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:26,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386916614] [2021-11-25 19:12:26,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386916614] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:26,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1915359741] [2021-11-25 19:12:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:26,528 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:12:26,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:12:26,534 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:12:26,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-25 19:12:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:26,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 19:12:26,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:26,750 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 19:12:26,764 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:12:26,805 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:12:26,806 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 16 treesize of output 16 [2021-11-25 19:12:26,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:26,818 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:12:26,824 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 16 treesize of output 18 [2021-11-25 19:12:26,911 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:12:26,912 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 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-25 19:12:26,925 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 8 treesize of output 7 [2021-11-25 19:12:26,947 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 7 treesize of output 3 [2021-11-25 19:12:27,023 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 15 treesize of output 7 [2021-11-25 19:12:27,028 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 19:12:27,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:27,068 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:12:27,068 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2021-11-25 19:12:27,087 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_174 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_5 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_32| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_5 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_174) |v_ULTIMATE.start_main_~end~0#1.base_32| v_arrayElimArr_5) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-25 19:12:27,192 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_174 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_169 (_ BitVec 32)) (v_arrayElimArr_5 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_32| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_33| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_5 (_ bv4 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_33|))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_169)) |v_ULTIMATE.start_main_~end~0#1.base_33| v_ArrVal_174) |v_ULTIMATE.start_main_~end~0#1.base_32| v_arrayElimArr_5) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-25 19:12:27,244 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:12:27,244 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2021-11-25 19:12:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:12:27,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1915359741] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:27,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172547442] [2021-11-25 19:12:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:27,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:27,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:27,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:27,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:12:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:27,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 19:12:27,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:27,402 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 19:12:27,411 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:12:27,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:27,438 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:12:27,458 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:12:27,459 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-11-25 19:12:27,471 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 7 treesize of output 3 [2021-11-25 19:12:27,508 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:12:27,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-25 19:12:27,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:27,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:27,622 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 19 treesize of output 23 [2021-11-25 19:12:27,647 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-25 19:12:27,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2021-11-25 19:12:27,706 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 15 treesize of output 7 [2021-11-25 19:12:27,713 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 19:12:27,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:27,768 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_241 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_38| (_ BitVec 32)) (v_ArrVal_239 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_241) |v_ULTIMATE.start_main_~end~0#1.base_38| v_ArrVal_239) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_38|))))) is different from false [2021-11-25 19:12:27,912 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_236 (_ BitVec 1)) (|v_ULTIMATE.start_main_~end~0#1.base_39| (_ BitVec 32)) (v_ArrVal_241 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_237 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_38| (_ BitVec 32)) (v_ArrVal_239 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_237)) |v_ULTIMATE.start_main_~end~0#1.base_39| v_ArrVal_241) |v_ULTIMATE.start_main_~end~0#1.base_38| v_ArrVal_239) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_39|)))) (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_39| v_ArrVal_236) |v_ULTIMATE.start_main_~end~0#1.base_38|))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_236) (_ bv1 1)))))) is different from false [2021-11-25 19:12:27,953 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:12:27,954 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2021-11-25 19:12:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:12:27,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172547442] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:27,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:12:27,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 16 [2021-11-25 19:12:27,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640741786] [2021-11-25 19:12:27,957 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:27,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:12:27,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:27,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:12:27,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=68, Unknown=6, NotChecked=126, Total=240 [2021-11-25 19:12:27,959 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:28,079 WARN L838 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~end~0#1.base|)) (forall ((v_ArrVal_241 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_38| (_ BitVec 32)) (v_ArrVal_239 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_241) |v_ULTIMATE.start_main_~end~0#1.base_38| v_ArrVal_239) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_38|))))) (forall ((v_ArrVal_174 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_5 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_32| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_5 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_174) |v_ULTIMATE.start_main_~end~0#1.base_32| v_arrayElimArr_5) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~end~0#1.base|)) (_ bv1 1))) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (exists ((v_arrayElimCell_19 (_ BitVec 1))) (let ((.cse0 (bvneg v_arrayElimCell_19))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg .cse0)))) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|)))))) (forall ((v_ArrVal_103 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_105 (_ BitVec 32)) (v_arrayElimArr_2 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_2 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_103) v_ArrVal_105 v_arrayElimArr_2) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) (= ~unnamed1~0~BLACK (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-11-25 19:12:28,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:28,316 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2021-11-25 19:12:28,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:12:28,317 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 19:12:28,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:28,319 INFO L225 Difference]: With dead ends: 61 [2021-11-25 19:12:28,319 INFO L226 Difference]: Without dead ends: 59 [2021-11-25 19:12:28,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=110, Unknown=7, NotChecked=196, Total=380 [2021-11-25 19:12:28,321 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 254 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:28,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 157 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 60 Invalid, 0 Unknown, 254 Unchecked, 0.2s Time] [2021-11-25 19:12:28,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-25 19:12:28,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 28. [2021-11-25 19:12:28,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-11-25 19:12:28,328 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 11 [2021-11-25 19:12:28,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:28,329 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-11-25 19:12:28,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:28,329 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-11-25 19:12:28,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:12:28,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:28,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:28,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:28,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-11-25 19:12:28,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-25 19:12:28,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:28,945 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:28,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:28,945 INFO L85 PathProgramCache]: Analyzing trace with hash -13041643, now seen corresponding path program 1 times [2021-11-25 19:12:28,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:28,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69103064] [2021-11-25 19:12:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:28,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:28,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:28,947 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:28,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 19:12:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:29,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:12:29,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:29,082 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:12:29,092 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 19:12:29,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:29,128 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:12:29,147 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:12:29,148 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-11-25 19:12:29,160 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 7 treesize of output 3 [2021-11-25 19:12:29,180 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:12:29,180 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 17 treesize of output 17 [2021-11-25 19:12:29,226 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 16 treesize of output 18 [2021-11-25 19:12:29,297 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 15 treesize of output 7 [2021-11-25 19:12:29,313 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 19:12:29,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:29,382 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_284) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-11-25 19:12:29,425 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_283 (_ BitVec 32)) (v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_43| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_283)) |v_ULTIMATE.start_main_~end~0#1.base_43| v_ArrVal_284) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_43|))))) is different from false [2021-11-25 19:12:29,449 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:12:29,449 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 1 [2021-11-25 19:12:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:12:29,451 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:29,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69103064] [2021-11-25 19:12:29,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69103064] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:29,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [459127653] [2021-11-25 19:12:29,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:29,452 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:12:29,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:12:29,457 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:12:29,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-25 19:12:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:29,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:12:29,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:29,638 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:12:29,651 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 19:12:29,674 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:12:29,674 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 16 treesize of output 16 [2021-11-25 19:12:29,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:29,686 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:12:29,690 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 16 treesize of output 18 [2021-11-25 19:12:29,704 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 16 treesize of output 18 [2021-11-25 19:12:29,744 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 15 treesize of output 7 [2021-11-25 19:12:29,749 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 19:12:29,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:29,784 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_327 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_327) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-11-25 19:12:29,815 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_326 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_47| (_ BitVec 32)) (v_ArrVal_327 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_47|))))) (_ bv0 1))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_326)) |v_ULTIMATE.start_main_~end~0#1.base_47| v_ArrVal_327) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-25 19:12:29,838 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:12:29,838 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 1 [2021-11-25 19:12:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:12:29,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [459127653] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:29,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851511247] [2021-11-25 19:12:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:29,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:29,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:29,842 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:29,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:12:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:29,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:12:29,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:29,949 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:12:29,957 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 19:12:29,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:29,982 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:12:30,002 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:12:30,003 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-11-25 19:12:30,013 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 7 treesize of output 3 [2021-11-25 19:12:30,034 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:12:30,035 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 18 treesize of output 18 [2021-11-25 19:12:30,050 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 16 treesize of output 18 [2021-11-25 19:12:30,090 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 15 treesize of output 7 [2021-11-25 19:12:30,095 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 19:12:30,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:30,128 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_370 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_370) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-11-25 19:12:30,158 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_51| (_ BitVec 32)) (v_ArrVal_368 (_ BitVec 32)) (v_ArrVal_370 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_368)) |v_ULTIMATE.start_main_~end~0#1.base_51| v_ArrVal_370) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_51|))))) is different from false [2021-11-25 19:12:30,179 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:12:30,180 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 1 [2021-11-25 19:12:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 19:12:30,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851511247] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:30,182 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:12:30,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 15 [2021-11-25 19:12:30,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143351260] [2021-11-25 19:12:30,183 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:30,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 19:12:30,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:30,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 19:12:30,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=6, NotChecked=114, Total=210 [2021-11-25 19:12:30,184 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 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 19:12:30,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:30,931 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2021-11-25 19:12:30,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:12:30,935 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 19:12:30,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:30,936 INFO L225 Difference]: With dead ends: 72 [2021-11-25 19:12:30,936 INFO L226 Difference]: Without dead ends: 70 [2021-11-25 19:12:30,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=124, Unknown=6, NotChecked=174, Total=380 [2021-11-25 19:12:30,938 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 90 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:30,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 140 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 75 Invalid, 0 Unknown, 261 Unchecked, 0.6s Time] [2021-11-25 19:12:30,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-25 19:12:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 30. [2021-11-25 19:12:30,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 29 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 19:12:30,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-11-25 19:12:30,952 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 11 [2021-11-25 19:12:30,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:30,953 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-11-25 19:12:30,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 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 19:12:30,953 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-11-25 19:12:30,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:12:30,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:30,954 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:30,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:31,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-25 19:12:31,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:31,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:31,565 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:31,565 INFO L85 PathProgramCache]: Analyzing trace with hash 2053285582, now seen corresponding path program 2 times [2021-11-25 19:12:31,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:31,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461652973] [2021-11-25 19:12:31,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:12:31,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:31,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:31,567 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:31,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-25 19:12:31,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:12:31,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:12:31,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-25 19:12:31,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:31,878 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 19:12:31,885 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:12:31,939 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:12:31,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-25 19:12:31,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:31,954 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:12:31,958 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 16 treesize of output 18 [2021-11-25 19:12:32,042 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:12:32,042 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 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-25 19:12:32,058 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 7 treesize of output 3 [2021-11-25 19:12:32,109 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:12:32,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-25 19:12:32,185 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:12:32,186 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 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-25 19:12:32,194 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 7 treesize of output 3 [2021-11-25 19:12:32,227 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:12:32,228 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 16 treesize of output 16 [2021-11-25 19:12:32,313 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:12:32,313 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 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-25 19:12:32,321 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 8 treesize of output 7 [2021-11-25 19:12:32,337 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:12:32,427 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 15 treesize of output 7 [2021-11-25 19:12:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:32,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:32,521 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:12:32,522 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2021-11-25 19:12:32,540 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_489 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_58| (_ BitVec 32)) (v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_489) |v_ULTIMATE.start_main_~end~0#1.base_58| v_arrayElimArr_16) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_16 (_ bv4 32)))))) is different from false [2021-11-25 19:12:32,604 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_489 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_485 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_58| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_59| (_ BitVec 32)) (v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_16 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_485) |v_ULTIMATE.start_main_~end~0#1.base_59| v_ArrVal_489) |v_ULTIMATE.start_main_~end~0#1.base_58| v_arrayElimArr_16) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_59|))))) is different from false [2021-11-25 19:12:32,772 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_60| (_ BitVec 32)) (v_ArrVal_489 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_485 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_58| (_ BitVec 32)) (v_ArrVal_480 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_59| (_ BitVec 32)) (v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_481 (_ BitVec 1))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_16 (_ bv4 32)))) (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_60| v_ArrVal_481) |v_ULTIMATE.start_main_~end~0#1.base_59|))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_480) |v_ULTIMATE.start_main_~end~0#1.base_60| v_ArrVal_485) |v_ULTIMATE.start_main_~end~0#1.base_59| v_ArrVal_489) |v_ULTIMATE.start_main_~end~0#1.base_58| v_arrayElimArr_16) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_60|))))) is different from false [2021-11-25 19:12:33,323 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_60| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_61| (_ BitVec 32)) (v_ArrVal_489 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_477 (_ BitVec 1)) (v_ArrVal_479 (_ BitVec 32)) (v_ArrVal_485 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_58| (_ BitVec 32)) (v_ArrVal_480 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_59| (_ BitVec 32)) (v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_481 (_ BitVec 1))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_61| v_ArrVal_477))) (or (not (= (_ bv0 1) (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_60| v_ArrVal_481) |v_ULTIMATE.start_main_~end~0#1.base_59|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_16 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_479)) |v_ULTIMATE.start_main_~end~0#1.base_61| v_ArrVal_480) |v_ULTIMATE.start_main_~end~0#1.base_60| v_ArrVal_485) |v_ULTIMATE.start_main_~end~0#1.base_59| v_ArrVal_489) |v_ULTIMATE.start_main_~end~0#1.base_58| v_arrayElimArr_16) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_60|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_61|)))))) is different from false [2021-11-25 19:12:33,364 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:12:33,365 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-11-25 19:12:33,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:12:33,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:33,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461652973] [2021-11-25 19:12:33,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461652973] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:33,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1034407751] [2021-11-25 19:12:33,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:12:33,368 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:12:33,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:12:33,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:12:33,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-25 19:12:33,618 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:12:33,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371690780] [2021-11-25 19:12:33,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 19:12:33,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:33,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:33,625 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:33,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 1 [2021-11-25 19:12:33,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 19:12:33,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 19:12:33,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:12:33,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-25 19:12:33,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:33,876 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:12:33,886 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 19:12:33,924 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:12:33,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-25 19:12:33,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:33,940 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:12:33,945 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 16 treesize of output 18 [2021-11-25 19:12:34,028 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 19:12:34,028 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 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-25 19:12:34,052 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 7 treesize of output 3 [2021-11-25 19:12:34,109 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:12:34,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-25 19:12:34,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:34,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:34,258 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 19 treesize of output 23 [2021-11-25 19:12:34,282 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-25 19:12:34,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 29 [2021-11-25 19:12:34,355 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:12:34,355 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 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-25 19:12:34,363 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 8 treesize of output 7 [2021-11-25 19:12:34,379 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:12:34,426 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 15 treesize of output 7 [2021-11-25 19:12:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:34,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:34,464 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:12:34,465 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2021-11-25 19:12:34,483 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_19 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_709 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_68| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_19 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_709) |v_ULTIMATE.start_main_~end~0#1.base_68| v_arrayElimArr_19) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-25 19:12:34,566 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_19 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_709 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_68| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_69| (_ BitVec 32)) (v_ArrVal_705 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_19 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_69|))))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_705) |v_ULTIMATE.start_main_~end~0#1.base_69| v_ArrVal_709) |v_ULTIMATE.start_main_~end~0#1.base_68| v_arrayElimArr_19) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-25 19:12:34,703 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_19 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_709 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_70| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_68| (_ BitVec 32)) (v_ArrVal_704 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_69| (_ BitVec 32)) (v_ArrVal_705 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_702 (_ BitVec 1))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_19 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_704) |v_ULTIMATE.start_main_~end~0#1.base_70| v_ArrVal_705) |v_ULTIMATE.start_main_~end~0#1.base_69| v_ArrVal_709) |v_ULTIMATE.start_main_~end~0#1.base_68| v_arrayElimArr_19) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_70|))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_70| v_ArrVal_702) |v_ULTIMATE.start_main_~end~0#1.base_69|)))))))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_702) (_ bv1 1)))))) is different from false [2021-11-25 19:12:35,136 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_71| (_ BitVec 32)) (v_arrayElimArr_19 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_709 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_70| (_ BitVec 32)) (v_ArrVal_698 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_68| (_ BitVec 32)) (v_ArrVal_704 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_69| (_ BitVec 32)) (v_ArrVal_705 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_700 (_ BitVec 1)) (v_ArrVal_702 (_ BitVec 1))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_71| v_ArrVal_700))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_19 (_ bv4 32)))) (not (= (_ bv0 1) (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_70|))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_70| v_ArrVal_702) |v_ULTIMATE.start_main_~end~0#1.base_69|))))))))) (= (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_698)) |v_ULTIMATE.start_main_~end~0#1.base_71| v_ArrVal_704) |v_ULTIMATE.start_main_~end~0#1.base_70| v_ArrVal_705) |v_ULTIMATE.start_main_~end~0#1.base_69| v_ArrVal_709) |v_ULTIMATE.start_main_~end~0#1.base_68| v_arrayElimArr_19) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_71|)))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_702) (_ bv1 1))))))) is different from false [2021-11-25 19:12:35,190 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:12:35,191 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-11-25 19:12:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:12:35,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371690780] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:35,193 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-25 19:12:35,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9, 9] total 19 [2021-11-25 19:12:35,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878666192] [2021-11-25 19:12:35,193 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:35,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-25 19:12:35,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:35,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-25 19:12:35,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=84, Unknown=8, NotChecked=200, Total=342 [2021-11-25 19:12:35,195 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:35,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:35,714 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2021-11-25 19:12:35,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:12:35,715 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 19:12:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:35,716 INFO L225 Difference]: With dead ends: 85 [2021-11-25 19:12:35,716 INFO L226 Difference]: Without dead ends: 83 [2021-11-25 19:12:35,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 8 IntricatePredicates, 1 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=173, Unknown=9, NotChecked=280, Total=552 [2021-11-25 19:12:35,717 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 63 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 503 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:35,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 147 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 503 Unchecked, 0.3s Time] [2021-11-25 19:12:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-25 19:12:35,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 32. [2021-11-25 19:12:35,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.4) internal successors, (42), 31 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 19:12:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2021-11-25 19:12:35,724 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 13 [2021-11-25 19:12:35,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:35,724 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-11-25 19:12:35,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:35,724 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2021-11-25 19:12:35,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:12:35,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:35,725 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:35,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:35,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:36,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:36,126 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:36,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:36,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1848654704, now seen corresponding path program 1 times [2021-11-25 19:12:36,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:36,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043783434] [2021-11-25 19:12:36,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:36,127 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:36,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:36,128 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:36,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 19:12:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:36,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-25 19:12:36,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:36,375 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 19:12:36,381 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:12:36,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:36,415 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:12:36,429 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:12:36,429 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-11-25 19:12:36,440 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 7 treesize of output 3 [2021-11-25 19:12:36,475 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:12:36,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-11-25 19:12:36,539 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 16 treesize of output 18 [2021-11-25 19:12:36,572 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:12:36,572 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 14 treesize of output 14 [2021-11-25 19:12:36,600 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:12:36,600 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 1 case distinctions, treesize of input 19 treesize of output 27 [2021-11-25 19:12:36,691 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:12:36,692 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 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-25 19:12:36,700 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 8 treesize of output 7 [2021-11-25 19:12:36,719 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:12:36,813 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 15 treesize of output 7 [2021-11-25 19:12:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:36,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:36,900 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:12:36,900 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2021-11-25 19:12:36,918 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_803 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_22 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_77| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_22 (_ bv4 32)))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_803) |v_ULTIMATE.start_main_~end~0#1.base_77| v_arrayElimArr_22) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK))) is different from false [2021-11-25 19:12:36,977 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_803 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_22 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_77| (_ BitVec 32)) (v_ArrVal_801 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_78| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_22 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_801) |v_ULTIMATE.start_main_~end~0#1.base_78| v_ArrVal_803) |v_ULTIMATE.start_main_~end~0#1.base_77| v_arrayElimArr_22) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_78|)))))))) is different from false [2021-11-25 19:12:37,256 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_797 (_ BitVec 1)) (v_ArrVal_798 (_ BitVec 32)) (v_ArrVal_796 (_ BitVec 32)) (v_ArrVal_803 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_22 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_77| (_ BitVec 32)) (v_ArrVal_801 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_78| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ArrVal_798))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_22 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_796)) v_ArrVal_798 v_ArrVal_801) |v_ULTIMATE.start_main_~end~0#1.base_78| v_ArrVal_803) |v_ULTIMATE.start_main_~end~0#1.base_77| v_arrayElimArr_22) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ArrVal_798 v_ArrVal_797) |v_ULTIMATE.start_main_~end~0#1.base_78|)))))))))) is different from false [2021-11-25 19:12:37,287 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:12:37,288 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 1 [2021-11-25 19:12:37,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:12:37,290 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:37,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043783434] [2021-11-25 19:12:37,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043783434] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:37,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [999488579] [2021-11-25 19:12:37,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:37,291 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 19:12:37,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 19:12:37,296 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 19:12:37,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-25 19:12:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:37,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-25 19:12:37,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:37,611 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 19:12:37,618 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:12:37,653 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:12:37,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-25 19:12:37,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:37,670 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:12:37,674 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 16 treesize of output 18 [2021-11-25 19:12:37,730 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 16 treesize of output 18 [2021-11-25 19:12:37,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:37,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:37,788 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 19 treesize of output 23 [2021-11-25 19:12:37,811 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-25 19:12:37,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 29 [2021-11-25 19:12:37,873 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:12:37,873 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 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-25 19:12:37,880 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 8 treesize of output 7 [2021-11-25 19:12:37,943 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 7 treesize of output 3 [2021-11-25 19:12:37,995 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 15 treesize of output 7 [2021-11-25 19:12:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:38,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:38,033 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:12:38,034 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2021-11-25 19:12:38,051 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_85| (_ BitVec 32)) (v_arrayElimArr_25 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_900 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_900) |v_ULTIMATE.start_main_~end~0#1.base_85| v_arrayElimArr_25) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_25 (_ bv4 32)))))) is different from false [2021-11-25 19:12:38,111 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_896 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_85| (_ BitVec 32)) (v_arrayElimArr_25 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_86| (_ BitVec 32)) (v_ArrVal_900 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_86|))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_25 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_896) |v_ULTIMATE.start_main_~end~0#1.base_86| v_ArrVal_900) |v_ULTIMATE.start_main_~end~0#1.base_85| v_arrayElimArr_25) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-25 19:12:38,357 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_896 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_85| (_ BitVec 32)) (v_ArrVal_892 (_ BitVec 1)) (v_arrayElimArr_25 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_86| (_ BitVec 32)) (v_ArrVal_891 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_87| (_ BitVec 32)) (v_ArrVal_900 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_87| v_ArrVal_892) |v_ULTIMATE.start_main_~end~0#1.base_86|))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_87|))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg v_ArrVal_892)) (_ bv1 1)))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_25 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_891)) |v_ULTIMATE.start_main_~end~0#1.base_87| v_ArrVal_896) |v_ULTIMATE.start_main_~end~0#1.base_86| v_ArrVal_900) |v_ULTIMATE.start_main_~end~0#1.base_85| v_arrayElimArr_25) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-25 19:12:38,394 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:12:38,394 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 1 [2021-11-25 19:12:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:12:38,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [999488579] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:38,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822049537] [2021-11-25 19:12:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:38,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:38,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:38,401 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:38,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 19:12:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:38,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-25 19:12:38,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:38,561 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 19:12:38,568 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:12:38,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:38,602 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-25 19:12:38,620 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:12:38,620 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-11-25 19:12:38,630 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 7 treesize of output 3 [2021-11-25 19:12:38,666 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:12:38,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-25 19:12:38,737 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 16 treesize of output 18 [2021-11-25 19:12:38,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:38,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:38,794 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 19 treesize of output 23 [2021-11-25 19:12:38,816 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-25 19:12:38,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2021-11-25 19:12:38,892 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:12:38,892 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 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-25 19:12:38,901 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 8 treesize of output 7 [2021-11-25 19:12:38,919 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:12:38,963 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 15 treesize of output 7 [2021-11-25 19:12:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:12:38,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:39,000 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:12:39,000 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2021-11-25 19:12:39,016 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_93| (_ BitVec 32)) (v_ArrVal_994 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_28 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_28 (_ bv4 32)))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_994) |v_ULTIMATE.start_main_~end~0#1.base_93| v_arrayElimArr_28) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK))) is different from false [2021-11-25 19:12:39,075 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_93| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_94| (_ BitVec 32)) (v_ArrVal_994 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_991 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_28 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_28 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_991) |v_ULTIMATE.start_main_~end~0#1.base_94| v_ArrVal_994) |v_ULTIMATE.start_main_~end~0#1.base_93| v_arrayElimArr_28) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_94|)))))) is different from false [2021-11-25 19:12:39,341 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_93| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_94| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_95| (_ BitVec 32)) (v_ArrVal_994 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_988 (_ BitVec 32)) (v_ArrVal_991 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_28 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_987 (_ BitVec 1))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_28 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_988)) |v_ULTIMATE.start_main_~end~0#1.base_95| v_ArrVal_991) |v_ULTIMATE.start_main_~end~0#1.base_94| v_ArrVal_994) |v_ULTIMATE.start_main_~end~0#1.base_93| v_arrayElimArr_28) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_987) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_95| v_ArrVal_987) |v_ULTIMATE.start_main_~end~0#1.base_94|))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_95|))))) is different from false [2021-11-25 19:12:39,377 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 19:12:39,377 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 1 [2021-11-25 19:12:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-25 19:12:39,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822049537] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:12:39,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 19:12:39,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-25 19:12:39,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536590837] [2021-11-25 19:12:39,380 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 19:12:39,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 19:12:39,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:39,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 19:12:39,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=85, Unknown=9, NotChecked=234, Total=380 [2021-11-25 19:12:39,381 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 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 19:12:39,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:39,794 INFO L93 Difference]: Finished difference Result 77 states and 91 transitions. [2021-11-25 19:12:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 19:12:39,794 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 19:12:39,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:39,795 INFO L225 Difference]: With dead ends: 77 [2021-11-25 19:12:39,795 INFO L226 Difference]: Without dead ends: 75 [2021-11-25 19:12:39,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 9 IntricatePredicates, 1 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=152, Unknown=9, NotChecked=306, Total=552 [2021-11-25 19:12:39,797 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 72 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 391 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:39,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 116 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 66 Invalid, 0 Unknown, 391 Unchecked, 0.3s Time] [2021-11-25 19:12:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-25 19:12:39,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 30. [2021-11-25 19:12:39,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 29 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 19:12:39,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-11-25 19:12:39,803 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 13 [2021-11-25 19:12:39,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:39,803 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-11-25 19:12:39,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 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 19:12:39,803 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-11-25 19:12:39,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 19:12:39,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:39,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:39,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:40,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:40,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:40,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:40,408 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:40,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:40,408 INFO L85 PathProgramCache]: Analyzing trace with hash 373972653, now seen corresponding path program 1 times [2021-11-25 19:12:40,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:40,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57423251] [2021-11-25 19:12:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:40,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:40,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:40,410 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:40,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-25 19:12:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:40,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:12:40,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:40,501 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:12:40,545 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 19 treesize of output 7 [2021-11-25 19:12:40,557 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 19:12:40,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:12:40,557 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:12:40,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57423251] [2021-11-25 19:12:40,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57423251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:40,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:40,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:12:40,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885428903] [2021-11-25 19:12:40,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:40,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:12:40,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:12:40,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:12:40,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:12:40,559 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 19:12:40,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:40,772 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2021-11-25 19:12:40,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:12:40,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 19:12:40,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:40,774 INFO L225 Difference]: With dead ends: 60 [2021-11-25 19:12:40,774 INFO L226 Difference]: Without dead ends: 52 [2021-11-25 19:12:40,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:12:40,775 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:40,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 59 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:12:40,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-25 19:12:40,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2021-11-25 19:12:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 37 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:12:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-11-25 19:12:40,781 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 14 [2021-11-25 19:12:40,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:40,782 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-11-25 19:12:40,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 19:12:40,782 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-11-25 19:12:40,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 19:12:40,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:40,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:40,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:40,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:40,999 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:40,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:40,999 INFO L85 PathProgramCache]: Analyzing trace with hash 374032235, now seen corresponding path program 1 times [2021-11-25 19:12:40,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:12:41,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951420446] [2021-11-25 19:12:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:41,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:12:41,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:12:41,000 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:12:41,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-25 19:12:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:12:41,095 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:12:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:12:41,139 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-25 19:12:41,140 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:12:41,140 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-25 19:12:41,142 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-25 19:12:41,143 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-25 19:12:41,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-25 19:12:41,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:12:41,346 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:12:41,349 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:12:41,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:12:41 BoogieIcfgContainer [2021-11-25 19:12:41,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:12:41,378 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:12:41,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:12:41,379 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:12:41,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:12:23" (3/4) ... [2021-11-25 19:12:41,381 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 19:12:41,427 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:12:41,427 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:12:41,428 INFO L158 Benchmark]: Toolchain (without parser) took 18996.22ms. Allocated memory was 52.4MB in the beginning and 121.6MB in the end (delta: 69.2MB). Free memory was 27.7MB in the beginning and 91.6MB in the end (delta: -63.9MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-11-25 19:12:41,432 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 52.4MB. Free memory was 33.9MB in the beginning and 33.9MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:12:41,433 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.44ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 27.4MB in the beginning and 51.5MB in the end (delta: -24.1MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-11-25 19:12:41,434 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.19ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 49.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:12:41,434 INFO L158 Benchmark]: Boogie Preprocessor took 41.97ms. Allocated memory is still 69.2MB. Free memory was 49.4MB in the beginning and 47.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:12:41,435 INFO L158 Benchmark]: RCFGBuilder took 602.39ms. Allocated memory is still 69.2MB. Free memory was 47.5MB in the beginning and 33.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 19:12:41,435 INFO L158 Benchmark]: TraceAbstraction took 17820.66ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 32.9MB in the beginning and 93.7MB in the end (delta: -60.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:12:41,435 INFO L158 Benchmark]: Witness Printer took 49.26ms. Allocated memory is still 121.6MB. Free memory was 93.7MB in the beginning and 91.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:12:41,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 52.4MB. Free memory was 33.9MB in the beginning and 33.9MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 428.44ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 27.4MB in the beginning and 51.5MB in the end (delta: -24.1MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.19ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 49.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.97ms. Allocated memory is still 69.2MB. Free memory was 49.4MB in the beginning and 47.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 602.39ms. Allocated memory is still 69.2MB. Free memory was 47.5MB in the beginning and 33.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 17820.66ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 32.9MB in the beginning and 93.7MB in the end (delta: -60.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 49.26ms. Allocated memory is still 121.6MB. Free memory was 93.7MB in the beginning and 91.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1049]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; VAL [end={6:0}, list={6:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list VAL [end={6:0}, list={6:0}] [L1038] COND FALSE !(!(((void*)0) != end)) VAL [end={6:0}, list={6:0}] [L1039] EXPR end->colour VAL [end={6:0}, end->colour=1, list={6:0}] [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end [L1043] EXPR end->colour VAL [end={6:0}, end->colour=1, list={6:0}] [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next VAL [end={6:0}, end->next={0:0}, list={6:0}] [L1049] COND TRUE !(end->next) [L1049] reach_error() VAL [end={6:0}, list={6:0}] - UnprovableResult [Line: 1038]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 17.7s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 380 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 380 mSDsluCounter, 742 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1409 IncrementalHoareTripleChecker+Unchecked, 579 mSDsCounter, 109 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 366 IncrementalHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 109 mSolverCounterUnsat, 163 mSDtfsCounter, 366 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 197 SyntacticMatches, 13 SemanticMatches, 93 ConstructedPredicates, 30 IntricatePredicates, 2 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=8, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 206 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 271 ConstructedInterpolants, 43 QuantifiedInterpolants, 3568 SizeOfPredicates, 95 NumberOfNonLiveVariables, 1615 ConjunctsInSsa, 284 ConjunctsInUnsatCore, 26 InterpolantComputations, 4 PerfectInterpolantSequences, 0/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-25 19:12:41,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be6213f7-7317-400c-a8c2-0a91e878eafe/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE