./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52fc70d7844651686a4c27e057f507f0498e7d5f7c17f07a035699d1630f6ea2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:33:08,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:33:08,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:33:08,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:33:08,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:33:08,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:33:08,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:33:08,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:33:08,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:33:08,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:33:08,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:33:08,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:33:08,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:33:08,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:33:08,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:33:08,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:33:08,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:33:08,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:33:08,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:33:08,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:33:08,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:33:08,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:33:08,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:33:08,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:33:08,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:33:08,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:33:08,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:33:08,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:33:08,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:33:08,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:33:08,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:33:08,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:33:08,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:33:08,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:33:08,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:33:08,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:33:08,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:33:08,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:33:08,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:33:08,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:33:08,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:33:08,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:33:08,155 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:33:08,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:33:08,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:33:08,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:33:08,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:33:08,156 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:33:08,156 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:33:08,156 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:33:08,156 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:33:08,156 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:33:08,157 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:33:08,157 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:33:08,157 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:33:08,157 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:33:08,157 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:33:08,157 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:33:08,157 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:33:08,157 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:33:08,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:33:08,158 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:33:08,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:33:08,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:33:08,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:33:08,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:33:08,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:33:08,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:33:08,159 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:33:08,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:33:08,159 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:33:08,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:33:08,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:33:08,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:33:08,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:33:08,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:33:08,160 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:33:08,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:33:08,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:33:08,160 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:33:08,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:33:08,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:33:08,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:33:08,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52fc70d7844651686a4c27e057f507f0498e7d5f7c17f07a035699d1630f6ea2 [2022-12-14 11:33:08,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:33:08,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:33:08,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:33:08,343 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:33:08,344 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:33:08,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/forester-heap/dll-reverse.i [2022-12-14 11:33:10,806 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:33:11,045 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:33:11,045 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/sv-benchmarks/c/forester-heap/dll-reverse.i [2022-12-14 11:33:11,055 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/data/f04e52f72/30e2aaefc5ec4bfa8dc702492dc09b4a/FLAGecdc28ff9 [2022-12-14 11:33:11,399 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/data/f04e52f72/30e2aaefc5ec4bfa8dc702492dc09b4a [2022-12-14 11:33:11,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:33:11,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:33:11,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:33:11,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:33:11,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:33:11,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:33:11" (1/1) ... [2022-12-14 11:33:11,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47fb80ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:33:11, skipping insertion in model container [2022-12-14 11:33:11,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:33:11" (1/1) ... [2022-12-14 11:33:11,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:33:11,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:33:11,630 WARN L237 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_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/sv-benchmarks/c/forester-heap/dll-reverse.i[22309,22322] [2022-12-14 11:33:11,634 WARN L237 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_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/sv-benchmarks/c/forester-heap/dll-reverse.i[22394,22407] [2022-12-14 11:33:11,640 WARN L237 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_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/sv-benchmarks/c/forester-heap/dll-reverse.i[22924,22937] [2022-12-14 11:33:11,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:33:11,652 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:33:11,682 WARN L237 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_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/sv-benchmarks/c/forester-heap/dll-reverse.i[22309,22322] [2022-12-14 11:33:11,683 WARN L237 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_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/sv-benchmarks/c/forester-heap/dll-reverse.i[22394,22407] [2022-12-14 11:33:11,686 WARN L237 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_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/sv-benchmarks/c/forester-heap/dll-reverse.i[22924,22937] [2022-12-14 11:33:11,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:33:11,703 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:33:11,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:33:11 WrapperNode [2022-12-14 11:33:11,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:33:11,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:33:11,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:33:11,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:33:11,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:33:11" (1/1) ... [2022-12-14 11:33:11,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:33:11" (1/1) ... [2022-12-14 11:33:11,733 INFO L138 Inliner]: procedures = 119, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 144 [2022-12-14 11:33:11,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:33:11,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:33:11,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:33:11,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:33:11,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:33:11" (1/1) ... [2022-12-14 11:33:11,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:33:11" (1/1) ... [2022-12-14 11:33:11,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:33:11" (1/1) ... [2022-12-14 11:33:11,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:33:11" (1/1) ... [2022-12-14 11:33:11,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:33:11" (1/1) ... [2022-12-14 11:33:11,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:33:11" (1/1) ... [2022-12-14 11:33:11,753 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:33:11" (1/1) ... [2022-12-14 11:33:11,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:33:11" (1/1) ... [2022-12-14 11:33:11,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:33:11,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:33:11,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:33:11,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:33:11,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:33:11" (1/1) ... [2022-12-14 11:33:11,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:33:11,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:33:11,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:33:11,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:33:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 11:33:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 11:33:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 11:33:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:33:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 11:33:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 11:33:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:33:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:33:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:33:11,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:33:11,902 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:33:11,903 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:33:12,121 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:33:12,189 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:33:12,189 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-12-14 11:33:12,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:33:12 BoogieIcfgContainer [2022-12-14 11:33:12,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:33:12,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:33:12,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:33:12,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:33:12,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:33:11" (1/3) ... [2022-12-14 11:33:12,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54013789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:33:12, skipping insertion in model container [2022-12-14 11:33:12,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:33:11" (2/3) ... [2022-12-14 11:33:12,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54013789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:33:12, skipping insertion in model container [2022-12-14 11:33:12,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:33:12" (3/3) ... [2022-12-14 11:33:12,198 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-reverse.i [2022-12-14 11:33:12,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:33:12,218 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-14 11:33:12,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:33:12,257 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@473f5924, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:33:12,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-14 11:33:12,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:33:12,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 11:33:12,265 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:33:12,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 11:33:12,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:33:12,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:33:12,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1014884411, now seen corresponding path program 1 times [2022-12-14 11:33:12,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:33:12,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388886042] [2022-12-14 11:33:12,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:33:12,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:33:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:33:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:33:12,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:33:12,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388886042] [2022-12-14 11:33:12,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388886042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:33:12,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:33:12,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:33:12,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374821820] [2022-12-14 11:33:12,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:33:12,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:33:12,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:33:12,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:33:12,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:33:12,423 INFO L87 Difference]: Start difference. First operand has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:33:12,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:33:12,518 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2022-12-14 11:33:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:33:12,520 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 [2022-12-14 11:33:12,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:33:12,526 INFO L225 Difference]: With dead ends: 47 [2022-12-14 11:33:12,526 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 11:33:12,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:33:12,530 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:33:12,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:33:12,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 11:33:12,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 11:33:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:33:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-12-14 11:33:12,554 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2022-12-14 11:33:12,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:33:12,554 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-12-14 11:33:12,554 INFO L496 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) [2022-12-14 11:33:12,554 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-12-14 11:33:12,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:33:12,555 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:33:12,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:33:12,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:33:12,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:33:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:33:12,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1773969138, now seen corresponding path program 1 times [2022-12-14 11:33:12,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:33:12,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112884750] [2022-12-14 11:33:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:33:12,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:33:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:33:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:33:12,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:33:12,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112884750] [2022-12-14 11:33:12,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112884750] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:33:12,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:33:12,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:33:12,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832052076] [2022-12-14 11:33:12,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:33:12,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:33:12,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:33:12,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:33:12,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:33:12,800 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:33:13,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:33:13,059 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2022-12-14 11:33:13,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:33:13,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 11:33:13,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:33:13,060 INFO L225 Difference]: With dead ends: 52 [2022-12-14 11:33:13,061 INFO L226 Difference]: Without dead ends: 33 [2022-12-14 11:33:13,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:33:13,062 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:33:13,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 55 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:33:13,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-14 11:33:13,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2022-12-14 11:33:13,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:33:13,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-12-14 11:33:13,069 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 8 [2022-12-14 11:33:13,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:33:13,069 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-12-14 11:33:13,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:33:13,069 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-12-14 11:33:13,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:33:13,070 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:33:13,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:33:13,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:33:13,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:33:13,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:33:13,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1773970388, now seen corresponding path program 1 times [2022-12-14 11:33:13,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:33:13,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034480727] [2022-12-14 11:33:13,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:33:13,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:33:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:33:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:33:13,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:33:13,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034480727] [2022-12-14 11:33:13,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034480727] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:33:13,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:33:13,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:33:13,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570621955] [2022-12-14 11:33:13,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:33:13,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:33:13,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:33:13,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:33:13,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:33:13,126 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:33:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:33:13,212 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2022-12-14 11:33:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:33:13,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 11:33:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:33:13,214 INFO L225 Difference]: With dead ends: 47 [2022-12-14 11:33:13,214 INFO L226 Difference]: Without dead ends: 37 [2022-12-14 11:33:13,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:33:13,216 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 33 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:33:13,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 28 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:33:13,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-14 11:33:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-12-14 11:33:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:33:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-12-14 11:33:13,223 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 8 [2022-12-14 11:33:13,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:33:13,223 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-12-14 11:33:13,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:33:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-12-14 11:33:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 11:33:13,224 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:33:13,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:33:13,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:33:13,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:33:13,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:33:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1654140644, now seen corresponding path program 1 times [2022-12-14 11:33:13,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:33:13,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635342961] [2022-12-14 11:33:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:33:13,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:33:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:33:14,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:33:14,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:33:14,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635342961] [2022-12-14 11:33:14,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635342961] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:33:14,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014272341] [2022-12-14 11:33:14,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:33:14,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:33:14,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:33:14,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:33:14,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:33:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:33:14,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-14 11:33:14,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:33:14,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:14,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:14,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 11:33:14,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:33:14,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:14,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:14,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 11:33:14,515 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-12-14 11:33:14,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:14,522 INFO L350 Elim1Store]: Elim1 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 50 treesize of output 36 [2022-12-14 11:33:14,547 INFO L321 Elim1Store]: treesize reduction 67, result has 20.2 percent of original size [2022-12-14 11:33:14,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 88 [2022-12-14 11:33:14,554 INFO L350 Elim1Store]: Elim1 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 58 treesize of output 50 [2022-12-14 11:33:14,566 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-12-14 11:33:14,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 11:33:14,631 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:33:14,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 39 [2022-12-14 11:33:14,637 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 16 [2022-12-14 11:33:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:33:14,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:33:14,767 INFO L321 Elim1Store]: treesize reduction 14, result has 69.6 percent of original size [2022-12-14 11:33:14,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 267 treesize of output 308 [2022-12-14 11:33:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:33:15,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014272341] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:33:15,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [293584547] [2022-12-14 11:33:15,197 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 11:33:15,197 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:33:15,200 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:33:15,205 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:33:15,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:33:15,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 11:33:15,270 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 11:33:15,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-12-14 11:33:15,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 11:33:15,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 46 [2022-12-14 11:33:15,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 11:33:15,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 506 treesize of output 533 [2022-12-14 11:33:15,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:15,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:15,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:16,707 INFO L321 Elim1Store]: treesize reduction 337, result has 11.1 percent of original size [2022-12-14 11:33:16,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 495 treesize of output 443 [2022-12-14 11:33:16,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:16,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:16,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:16,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:16,938 INFO L321 Elim1Store]: treesize reduction 302, result has 10.9 percent of original size [2022-12-14 11:33:16,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 381 treesize of output 341 [2022-12-14 11:33:16,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:16,984 INFO L321 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2022-12-14 11:33:16,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 61 [2022-12-14 11:33:16,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:16,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 11:33:17,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 61 [2022-12-14 11:33:17,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:33:17,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 51 [2022-12-14 11:33:17,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 34 [2022-12-14 11:33:17,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 41 [2022-12-14 11:33:17,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 22 [2022-12-14 11:33:17,088 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2022-12-14 11:33:17,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 41 [2022-12-14 11:33:17,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 22 [2022-12-14 11:33:17,117 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2022-12-14 11:33:17,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,195 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-12-14 11:33:17,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 137 treesize of output 92 [2022-12-14 11:33:17,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,218 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:33:17,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 50 [2022-12-14 11:33:17,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,230 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2022-12-14 11:33:17,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,485 INFO L321 Elim1Store]: treesize reduction 178, result has 31.8 percent of original size [2022-12-14 11:33:17,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 445 treesize of output 450 [2022-12-14 11:33:17,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,602 INFO L321 Elim1Store]: treesize reduction 170, result has 20.9 percent of original size [2022-12-14 11:33:17,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 385 treesize of output 389 [2022-12-14 11:33:17,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,650 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-12-14 11:33:17,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 393 treesize of output 379 [2022-12-14 11:33:17,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:17,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:17,691 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-14 11:33:17,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 397 treesize of output 379 [2022-12-14 11:33:18,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:33:18,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-14 11:33:18,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-14 11:33:18,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-14 11:33:18,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-14 11:33:18,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:33:18,184 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:33:18,674 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '439#(and (= |ULTIMATE.start_main_~head~0#1.offset| |ULTIMATE.start_main_~x~0#1.offset|) (= 2 |ULTIMATE.start_main_~t1~0#1|) (= |ULTIMATE.start_main_~x~0#1.base| |ULTIMATE.start_main_~head~0#1.base|) (= |ULTIMATE.start_main_~head~0#1.offset| |ULTIMATE.start_main_~prev~0#1.offset|) (= |ULTIMATE.start_main_~prev~0#1.base| |ULTIMATE.start_main_~head~0#1.base|) (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 8)) |ULTIMATE.start_main_~t2~0#1|) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~t2~0#1| 1)) (= |ULTIMATE.start_main_~t1~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ 8 |ULTIMATE.start_main_~x~0#1.offset|))) (or (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (not (= |ULTIMATE.start_main_~x~0#1.offset| 0))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:33:18,674 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:33:18,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:33:18,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 11:33:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001038414] [2022-12-14 11:33:18,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:33:18,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 11:33:18,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:33:18,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 11:33:18,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-12-14 11:33:18,675 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:33:20,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:33:20,458 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2022-12-14 11:33:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 11:33:20,460 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 11:33:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:33:20,461 INFO L225 Difference]: With dead ends: 68 [2022-12-14 11:33:20,461 INFO L226 Difference]: Without dead ends: 62 [2022-12-14 11:33:20,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2022-12-14 11:33:20,463 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 38 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:33:20,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 124 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 115 Invalid, 3 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 11:33:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-12-14 11:33:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2022-12-14 11:33:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:33:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-12-14 11:33:20,473 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 14 [2022-12-14 11:33:20,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:33:20,473 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-12-14 11:33:20,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:33:20,474 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-12-14 11:33:20,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 11:33:20,474 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:33:20,474 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:33:20,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:33:20,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:33:20,676 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:33:20,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:33:20,678 INFO L85 PathProgramCache]: Analyzing trace with hash 186699056, now seen corresponding path program 2 times [2022-12-14 11:33:20,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:33:20,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227835469] [2022-12-14 11:33:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:33:20,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:33:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:33:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:33:21,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:33:21,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227835469] [2022-12-14 11:33:21,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227835469] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:33:21,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444035877] [2022-12-14 11:33:21,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:33:21,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:33:21,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:33:21,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:33:21,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:33:21,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 11:33:21,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:33:21,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 82 conjunts are in the unsatisfiable core [2022-12-14 11:33:22,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:33:22,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:22,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:22,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 11:33:22,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:33:22,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:22,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:22,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 11:33:22,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:22,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 46 [2022-12-14 11:33:22,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:22,155 INFO L350 Elim1Store]: Elim1 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 79 treesize of output 52 [2022-12-14 11:33:22,181 INFO L321 Elim1Store]: treesize reduction 67, result has 20.2 percent of original size [2022-12-14 11:33:22,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 123 [2022-12-14 11:33:22,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:22,200 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-12-14 11:33:22,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 97 [2022-12-14 11:33:22,207 INFO L350 Elim1Store]: Elim1 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 115 treesize of output 99 [2022-12-14 11:33:22,220 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-12-14 11:33:22,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 11:33:22,266 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-12-14 11:33:22,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-12-14 11:33:22,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:22,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:22,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-12-14 11:33:22,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:33:22,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:33:22,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 11:33:22,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2022-12-14 11:33:22,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2022-12-14 11:33:22,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2022-12-14 11:33:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:33:22,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:33:22,531 INFO L321 Elim1Store]: treesize reduction 14, result has 74.1 percent of original size [2022-12-14 11:33:22,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 277 treesize of output 321 [2022-12-14 11:33:22,574 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:33:22,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 19 [2022-12-14 11:33:22,666 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-12-14 11:33:22,667 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 27 treesize of output 1 [2022-12-14 11:33:22,712 INFO L321 Elim1Store]: treesize reduction 115, result has 38.5 percent of original size [2022-12-14 11:33:22,713 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 41 treesize of output 80 [2022-12-14 11:33:22,729 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 4 [2022-12-14 11:33:22,751 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 10 [2022-12-14 11:33:22,783 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:33:22,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 187 treesize of output 186 [2022-12-14 11:33:22,799 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 4 [2022-12-14 11:33:23,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:33:23,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444035877] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:33:23,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2132904425] [2022-12-14 11:33:23,264 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 11:33:23,264 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:33:23,265 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:33:23,265 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:33:23,265 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:33:23,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,296 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:33:23,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 50 [2022-12-14 11:33:23,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 11:33:23,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 11:33:23,333 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 11:33:23,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-12-14 11:33:23,362 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 11:33:23,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-12-14 11:33:23,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 506 treesize of output 528 [2022-12-14 11:33:23,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:23,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:23,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:24,746 INFO L321 Elim1Store]: treesize reduction 337, result has 11.1 percent of original size [2022-12-14 11:33:24,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 490 treesize of output 438 [2022-12-14 11:33:24,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:24,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:24,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:24,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,017 INFO L321 Elim1Store]: treesize reduction 302, result has 10.9 percent of original size [2022-12-14 11:33:25,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 421 treesize of output 385 [2022-12-14 11:33:25,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,102 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-12-14 11:33:25,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 50 [2022-12-14 11:33:25,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,132 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-12-14 11:33:25,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 85 treesize of output 102 [2022-12-14 11:33:25,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,169 INFO L321 Elim1Store]: treesize reduction 20, result has 56.5 percent of original size [2022-12-14 11:33:25,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 72 [2022-12-14 11:33:25,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 34 [2022-12-14 11:33:25,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 57 [2022-12-14 11:33:25,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,210 INFO L321 Elim1Store]: treesize reduction 67, result has 1.5 percent of original size [2022-12-14 11:33:25,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 178 treesize of output 122 [2022-12-14 11:33:25,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 97 [2022-12-14 11:33:25,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 75 [2022-12-14 11:33:25,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 55 [2022-12-14 11:33:25,249 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2022-12-14 11:33:25,255 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2022-12-14 11:33:25,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:33:25,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,297 INFO L321 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2022-12-14 11:33:25,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 61 [2022-12-14 11:33:25,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:25,382 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-12-14 11:33:25,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 158 treesize of output 109 [2022-12-14 11:33:25,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:25,413 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-12-14 11:33:25,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 54 treesize of output 46 [2022-12-14 11:33:25,443 INFO L321 Elim1Store]: treesize reduction 37, result has 11.9 percent of original size [2022-12-14 11:33:25,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 65 [2022-12-14 11:33:25,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:25,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 27 treesize of output 20 [2022-12-14 11:33:25,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-14 11:33:25,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-14 11:33:25,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:33:25,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-14 11:33:25,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:33:25,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-14 11:33:25,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:33:25,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-14 11:33:25,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-14 11:33:25,557 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:33:26,164 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '709#(and (= |ULTIMATE.start_main_~head~0#1.offset| |ULTIMATE.start_main_~x~0#1.offset|) (= 2 |ULTIMATE.start_main_~t1~0#1|) (= |ULTIMATE.start_main_~x~0#1.base| |ULTIMATE.start_main_~head~0#1.base|) (= |ULTIMATE.start_main_~head~0#1.offset| |ULTIMATE.start_main_~prev~0#1.offset|) (= |ULTIMATE.start_main_~prev~0#1.base| |ULTIMATE.start_main_~head~0#1.base|) (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 8)) |ULTIMATE.start_main_~t2~0#1|) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~t2~0#1| 1)) (= |ULTIMATE.start_main_~t1~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ 8 |ULTIMATE.start_main_~x~0#1.offset|))) (or (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (not (= |ULTIMATE.start_main_~x~0#1.offset| 0))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:33:26,164 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:33:26,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:33:26,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-12-14 11:33:26,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672073458] [2022-12-14 11:33:26,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:33:26,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 11:33:26,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:33:26,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 11:33:26,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-12-14 11:33:26,167 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 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) [2022-12-14 11:33:27,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:33:27,047 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2022-12-14 11:33:27,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 11:33:27,047 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 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) Word has length 15 [2022-12-14 11:33:27,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:33:27,048 INFO L225 Difference]: With dead ends: 62 [2022-12-14 11:33:27,048 INFO L226 Difference]: Without dead ends: 60 [2022-12-14 11:33:27,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2022-12-14 11:33:27,049 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 41 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:33:27,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 177 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 11:33:27,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-14 11:33:27,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2022-12-14 11:33:27,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:33:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2022-12-14 11:33:27,057 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 15 [2022-12-14 11:33:27,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:33:27,057 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2022-12-14 11:33:27,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 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) [2022-12-14 11:33:27,058 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2022-12-14 11:33:27,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 11:33:27,058 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:33:27,058 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:33:27,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:33:27,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:33:27,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:33:27,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:33:27,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1246752193, now seen corresponding path program 1 times [2022-12-14 11:33:27,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:33:27,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519583155] [2022-12-14 11:33:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:33:27,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:33:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:33:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:33:27,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:33:27,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519583155] [2022-12-14 11:33:27,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519583155] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:33:27,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997372378] [2022-12-14 11:33:27,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:33:27,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:33:27,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:33:27,372 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:33:27,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:33:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:33:27,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 11:33:27,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:33:27,506 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 17 [2022-12-14 11:33:27,508 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 13 [2022-12-14 11:33:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:33:27,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:33:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:33:27,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997372378] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:33:27,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1745579155] [2022-12-14 11:33:27,540 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 11:33:27,540 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:33:27,540 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:33:27,540 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:33:27,540 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:33:27,568 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 11:33:27,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-12-14 11:33:27,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 11:33:27,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,599 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 11:33:27,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 50 [2022-12-14 11:33:27,623 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 11:33:27,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-12-14 11:33:27,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 11:33:27,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:27,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,758 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:33:27,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 40 [2022-12-14 11:33:27,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 40 [2022-12-14 11:33:27,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,837 INFO L321 Elim1Store]: treesize reduction 95, result has 29.6 percent of original size [2022-12-14 11:33:27,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 74 [2022-12-14 11:33:27,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,857 INFO L321 Elim1Store]: treesize reduction 31, result has 26.2 percent of original size [2022-12-14 11:33:27,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 44 [2022-12-14 11:33:27,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,883 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-12-14 11:33:27,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 50 [2022-12-14 11:33:27,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,913 INFO L321 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2022-12-14 11:33:27,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 61 [2022-12-14 11:33:27,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:27,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:27,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:27,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:28,055 INFO L321 Elim1Store]: treesize reduction 112, result has 11.8 percent of original size [2022-12-14 11:33:28,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 25 [2022-12-14 11:33:28,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:28,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:28,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:28,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:28,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:28,091 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 11:33:28,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 33 [2022-12-14 11:33:28,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:28,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 15 [2022-12-14 11:33:28,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:28,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:33:28,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:33:28,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:33:28,223 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:33:28,274 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '975#(and (= |ULTIMATE.start_main_~x~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1.base| 0) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 11:33:28,274 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:33:28,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:33:28,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-12-14 11:33:28,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711886992] [2022-12-14 11:33:28,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:33:28,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:33:28,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:33:28,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:33:28,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-14 11:33:28,276 INFO L87 Difference]: Start difference. First operand 50 states and 58 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) [2022-12-14 11:33:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:33:28,544 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2022-12-14 11:33:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:33:28,545 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 15 [2022-12-14 11:33:28,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:33:28,545 INFO L225 Difference]: With dead ends: 50 [2022-12-14 11:33:28,545 INFO L226 Difference]: Without dead ends: 46 [2022-12-14 11:33:28,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:33:28,546 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:33:28,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 25 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:33:28,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-14 11:33:28,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2022-12-14 11:33:28,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:33:28,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-12-14 11:33:28,555 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 15 [2022-12-14 11:33:28,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:33:28,555 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-12-14 11:33:28,555 INFO L496 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) [2022-12-14 11:33:28,555 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-12-14 11:33:28,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 11:33:28,556 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:33:28,556 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:33:28,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:33:28,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:33:28,757 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:33:28,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:33:28,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1418154908, now seen corresponding path program 3 times [2022-12-14 11:33:28,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:33:28,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34723418] [2022-12-14 11:33:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:33:28,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:33:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:33:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:33:29,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:33:29,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34723418] [2022-12-14 11:33:29,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34723418] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:33:29,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233041780] [2022-12-14 11:33:29,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:33:29,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:33:29,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:33:29,546 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:33:29,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8a4b3-011f-436d-9bf3-eb3b3b845d61/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:33:29,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:33:29,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:33:29,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 84 conjunts are in the unsatisfiable core [2022-12-14 11:33:29,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:33:29,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:29,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:29,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 11:33:29,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:29,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:29,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 11:33:29,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:33:29,881 INFO L321 Elim1Store]: treesize reduction 31, result has 13.9 percent of original size [2022-12-14 11:33:29,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 658 treesize of output 454 [2022-12-14 11:33:29,922 INFO L321 Elim1Store]: treesize reduction 59, result has 16.9 percent of original size [2022-12-14 11:33:29,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1147 treesize of output 736 [2022-12-14 11:33:29,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:29,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:29,978 INFO L321 Elim1Store]: treesize reduction 281, result has 1.7 percent of original size [2022-12-14 11:33:29,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 665 treesize of output 627 [2022-12-14 11:33:29,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:29,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:30,021 INFO L321 Elim1Store]: treesize reduction 214, result has 2.3 percent of original size [2022-12-14 11:33:30,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 532 treesize of output 516 [2022-12-14 11:33:30,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 33 [2022-12-14 11:33:30,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 47 [2022-12-14 11:33:30,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:30,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 11:33:30,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:30,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2022-12-14 11:33:30,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:30,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 33 [2022-12-14 11:33:30,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:30,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 47 [2022-12-14 11:33:30,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:30,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 47 [2022-12-14 11:33:30,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:30,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2022-12-14 11:33:30,240 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 51 [2022-12-14 11:33:30,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:30,261 INFO L350 Elim1Store]: Elim1 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 89 treesize of output 46 [2022-12-14 11:33:30,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:30,272 INFO L350 Elim1Store]: Elim1 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 56 treesize of output 28 [2022-12-14 11:33:30,282 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 50 [2022-12-14 11:33:30,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:30,289 INFO L350 Elim1Store]: Elim1 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 50 treesize of output 22 [2022-12-14 11:33:30,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:30,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 62 [2022-12-14 11:33:30,387 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:33:30,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 135 treesize of output 122 [2022-12-14 11:33:30,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:30,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 63 [2022-12-14 11:33:30,398 INFO L350 Elim1Store]: Elim1 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 53 treesize of output 43 [2022-12-14 11:33:30,401 INFO L350 Elim1Store]: Elim1 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 53 treesize of output 39 [2022-12-14 11:33:30,405 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 11 [2022-12-14 11:33:30,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:33:30,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:33:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:33:30,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:33:30,461 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_941 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_941) .cse0) .cse1) 0)) (forall ((v_ArrVal_940 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_940) .cse0) .cse1) 0)))) is different from false [2022-12-14 11:33:30,673 INFO L321 Elim1Store]: treesize reduction 14, result has 69.6 percent of original size [2022-12-14 11:33:30,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 319 treesize of output 360 [2022-12-14 11:33:30,886 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse18 (select .cse7 |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse9 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse0 (= (select .cse9 |c_ULTIMATE.start_main_~x~0#1.offset|) 0)) (.cse16 (= .cse18 0)) (.cse8 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 8))) (and (or (not .cse0) (and (forall ((v_ArrVal_920 Int)) (or (not (= (select |c_#valid| v_ArrVal_920) 0)) (forall ((v_ArrVal_903 Int) (v_ArrVal_922 Int) (v_ArrVal_921 Int) (v_ArrVal_930 Int) (v_ArrVal_941 (Array Int Int)) (v_ArrVal_933 (Array Int Int)) (v_ArrVal_910 (Array Int Int)) (v_ArrVal_924 (Array Int Int)) (v_ArrVal_915 (Array Int Int)) (v_ArrVal_925 (Array Int Int)) (v_ArrVal_927 (Array Int Int)) (v_ArrVal_938 (Array Int Int)) (v_ArrVal_918 (Array Int Int))) (= (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse9 .cse8 v_ArrVal_930) |c_ULTIMATE.start_main_~x~0#1.offset| 0)))) (let ((.cse4 (select (select (store .cse6 v_ArrVal_920 v_ArrVal_924) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse7 .cse8 v_ArrVal_921) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_920)))) (let ((.cse3 (select (select (store .cse2 v_ArrVal_920 v_ArrVal_933) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse5 (+ .cse4 8))) (select (let ((.cse1 (store (store .cse2 v_ArrVal_920 v_ArrVal_915) .cse3 (store (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_918) v_ArrVal_920 v_ArrVal_927) .cse3) .cse4 0) .cse5 v_ArrVal_903)))) (select (store .cse1 |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_941) (select (select .cse1 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store (store .cse6 v_ArrVal_920 v_ArrVal_938) .cse3 (store (store (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_925) v_ArrVal_920 v_ArrVal_910) .cse3) .cse4 0) .cse5 v_ArrVal_922)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) 0)) (= v_ArrVal_920 0))) (forall ((v_ArrVal_920 Int)) (or (forall ((v_ArrVal_903 Int) (v_ArrVal_922 Int) (v_ArrVal_921 Int) (v_ArrVal_940 (Array Int Int)) (v_ArrVal_930 Int) (v_ArrVal_933 (Array Int Int)) (v_ArrVal_910 (Array Int Int)) (v_ArrVal_924 (Array Int Int)) (v_ArrVal_915 (Array Int Int)) (v_ArrVal_925 (Array Int Int)) (v_ArrVal_927 (Array Int Int)) (v_ArrVal_938 (Array Int Int)) (v_ArrVal_918 (Array Int Int))) (= (let ((.cse15 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse9 .cse8 v_ArrVal_930) |c_ULTIMATE.start_main_~x~0#1.offset| 0)))) (let ((.cse13 (select (select (store .cse15 v_ArrVal_920 v_ArrVal_924) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse11 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse7 .cse8 v_ArrVal_921) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_920)))) (let ((.cse12 (select (select (store .cse11 v_ArrVal_920 v_ArrVal_933) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse14 (+ .cse13 8))) (let ((.cse10 (store (store .cse15 v_ArrVal_920 v_ArrVal_938) .cse12 (store (store (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_925) v_ArrVal_920 v_ArrVal_910) .cse12) .cse13 0) .cse14 v_ArrVal_922)))) (select (select (store .cse10 |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_940) (select (select (store (store .cse11 v_ArrVal_920 v_ArrVal_915) .cse12 (store (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_918) v_ArrVal_920 v_ArrVal_927) .cse12) .cse13 0) .cse14 v_ArrVal_903)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select (select .cse10 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) 0)) (not (= (select |c_#valid| v_ArrVal_920) 0)) (= v_ArrVal_920 0)))) (not .cse16)) (or (and .cse0 .cse16) (and (forall ((v_ArrVal_913 (Array Int Int)) (v_ArrVal_929 (Array Int Int)) (v_ArrVal_921 Int) (v_ArrVal_940 (Array Int Int)) (v_ArrVal_930 Int)) (= (let ((.cse17 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse9 .cse8 v_ArrVal_930)) .cse18 v_ArrVal_929))) (select (select (store .cse17 |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_940) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse7 .cse8 v_ArrVal_921)) .cse18 v_ArrVal_913) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select (select .cse17 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) 0)) (forall ((v_ArrVal_941 (Array Int Int)) (v_ArrVal_913 (Array Int Int)) (v_ArrVal_929 (Array Int Int)) (v_ArrVal_921 Int) (v_ArrVal_930 Int)) (= (select (let ((.cse19 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse7 .cse8 v_ArrVal_921)) .cse18 v_ArrVal_913))) (select (store .cse19 |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_941) (select (select .cse19 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse9 .cse8 v_ArrVal_930)) .cse18 v_ArrVal_929) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 0)))))))) is different from false [2022-12-14 11:33:31,406 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse8 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|))) (let ((.cse18 (select .cse8 |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse10 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base|))) (let ((.cse9 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8)) (.cse0 (= (select .cse10 |c_ULTIMATE.start_main_~head~0#1.offset|) 0)) (.cse1 (= .cse18 0))) (and (or (not .cse0) (not .cse1) (and (forall ((v_ArrVal_920 Int)) (or (not (= (select |c_#valid| v_ArrVal_920) 0)) (forall ((v_ArrVal_903 Int) (v_ArrVal_922 Int) (v_ArrVal_921 Int) (v_ArrVal_930 Int) (v_ArrVal_941 (Array Int Int)) (v_ArrVal_933 (Array Int Int)) (v_ArrVal_910 (Array Int Int)) (v_ArrVal_924 (Array Int Int)) (v_ArrVal_915 (Array Int Int)) (v_ArrVal_925 (Array Int Int)) (v_ArrVal_927 (Array Int Int)) (v_ArrVal_938 (Array Int Int)) (v_ArrVal_918 (Array Int Int))) (= 0 (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| (store (store .cse10 .cse9 v_ArrVal_930) |c_ULTIMATE.start_main_~head~0#1.offset| 0)))) (let ((.cse5 (select (select (store .cse7 v_ArrVal_920 v_ArrVal_924) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| (store (store .cse8 .cse9 v_ArrVal_921) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_920)))) (let ((.cse4 (select (select (store .cse3 v_ArrVal_920 v_ArrVal_933) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse6 (+ 8 .cse5))) (select (let ((.cse2 (store (store .cse3 v_ArrVal_920 v_ArrVal_915) .cse4 (store (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_918) v_ArrVal_920 v_ArrVal_927) .cse4) .cse5 0) .cse6 v_ArrVal_903)))) (select (store .cse2 |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_941) (select (select .cse2 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store (store .cse7 v_ArrVal_920 v_ArrVal_938) .cse4 (store (store (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_925) v_ArrVal_920 v_ArrVal_910) .cse4) .cse5 0) .cse6 v_ArrVal_922)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))) (= v_ArrVal_920 0))) (forall ((v_ArrVal_920 Int)) (or (not (= (select |c_#valid| v_ArrVal_920) 0)) (forall ((v_ArrVal_903 Int) (v_ArrVal_922 Int) (v_ArrVal_921 Int) (v_ArrVal_940 (Array Int Int)) (v_ArrVal_930 Int) (v_ArrVal_933 (Array Int Int)) (v_ArrVal_910 (Array Int Int)) (v_ArrVal_924 (Array Int Int)) (v_ArrVal_915 (Array Int Int)) (v_ArrVal_925 (Array Int Int)) (v_ArrVal_927 (Array Int Int)) (v_ArrVal_938 (Array Int Int)) (v_ArrVal_918 (Array Int Int))) (= (let ((.cse16 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| (store (store .cse10 .cse9 v_ArrVal_930) |c_ULTIMATE.start_main_~head~0#1.offset| 0)))) (let ((.cse14 (select (select (store .cse16 v_ArrVal_920 v_ArrVal_924) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| (store (store .cse8 .cse9 v_ArrVal_921) |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_920)))) (let ((.cse13 (select (select (store .cse12 v_ArrVal_920 v_ArrVal_933) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse15 (+ 8 .cse14))) (let ((.cse11 (store (store .cse16 v_ArrVal_920 v_ArrVal_938) .cse13 (store (store (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_925) v_ArrVal_920 v_ArrVal_910) .cse13) .cse14 0) .cse15 v_ArrVal_922)))) (select (select (store .cse11 |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_940) (select (select (store (store .cse12 v_ArrVal_920 v_ArrVal_915) .cse13 (store (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_918) v_ArrVal_920 v_ArrVal_927) .cse13) .cse14 0) .cse15 v_ArrVal_903)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select (select .cse11 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) 0)) (= v_ArrVal_920 0))))) (or (and (forall ((v_ArrVal_913 (Array Int Int)) (v_ArrVal_929 (Array Int Int)) (v_ArrVal_921 Int) (v_ArrVal_940 (Array Int Int)) (v_ArrVal_930 Int)) (= (let ((.cse17 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| (store .cse10 .cse9 v_ArrVal_930)) .cse18 v_ArrVal_929))) (select (select (store .cse17 |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_940) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| (store .cse8 .cse9 v_ArrVal_921)) .cse18 v_ArrVal_913) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select (select .cse17 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) 0)) (forall ((v_ArrVal_941 (Array Int Int)) (v_ArrVal_913 (Array Int Int)) (v_ArrVal_929 (Array Int Int)) (v_ArrVal_921 Int) (v_ArrVal_930 Int)) (= (select (let ((.cse19 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| (store .cse8 .cse9 v_ArrVal_921)) .cse18 v_ArrVal_913))) (select (store .cse19 |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_941) (select (select .cse19 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| (store .cse10 .cse9 v_ArrVal_930)) .cse18 v_ArrVal_929) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 0))) (and .cse0 .cse1)))))) is different from false [2022-12-14 11:33:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-14 11:33:31,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233041780] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:33:31,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2015053476] [2022-12-14 11:33:31,683 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 11:33:31,683 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:33:31,683 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:33:31,683 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:33:31,683 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:33:31,705 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 11:33:31,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-12-14 11:33:31,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 11:33:31,733 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 11:33:31,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-12-14 11:33:31,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 11:33:31,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 46 [2022-12-14 11:33:31,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 506 treesize of output 528 [2022-12-14 11:33:31,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:31,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:31,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:32,967 INFO L321 Elim1Store]: treesize reduction 337, result has 11.1 percent of original size [2022-12-14 11:33:32,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 490 treesize of output 438 [2022-12-14 11:33:32,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:33,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:33,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:33,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:33,174 INFO L321 Elim1Store]: treesize reduction 302, result has 10.9 percent of original size [2022-12-14 11:33:33,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 421 treesize of output 385 [2022-12-14 11:33:33,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:33,247 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-12-14 11:33:33,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 50 [2022-12-14 11:33:33,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:33,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:33,270 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-12-14 11:33:33,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 93 [2022-12-14 11:33:33,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:33,330 INFO L321 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2022-12-14 11:33:33,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 61 [2022-12-14 11:33:33,977 INFO L321 Elim1Store]: treesize reduction 122, result has 22.8 percent of original size [2022-12-14 11:33:33,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 9490 treesize of output 8547 [2022-12-14 11:33:34,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,408 INFO L321 Elim1Store]: treesize reduction 420, result has 6.0 percent of original size [2022-12-14 11:33:34,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 13 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 17 case distinctions, treesize of input 4189 treesize of output 4181 [2022-12-14 11:33:34,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,569 INFO L321 Elim1Store]: treesize reduction 38, result has 15.6 percent of original size [2022-12-14 11:33:34,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 435 treesize of output 410 [2022-12-14 11:33:34,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,691 INFO L321 Elim1Store]: treesize reduction 42, result has 14.3 percent of original size [2022-12-14 11:33:34,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 288 treesize of output 261 [2022-12-14 11:33:34,843 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:33:34,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 28 [2022-12-14 11:33:34,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:34,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:34,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 347 [2022-12-14 11:33:35,015 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:33:35,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 74 treesize of output 67 [2022-12-14 11:33:35,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 74 treesize of output 67 [2022-12-14 11:33:35,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-12-14 11:33:35,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 347 [2022-12-14 11:33:35,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 95 treesize of output 100 [2022-12-14 11:33:35,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:35,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 95 treesize of output 100 [2022-12-14 11:33:35,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:35,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 11:33:38,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:38,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:38,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:38,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:38,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:38,445 INFO L321 Elim1Store]: treesize reduction 636, result has 5.5 percent of original size [2022-12-14 11:33:38,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 10 case distinctions, treesize of input 1094 treesize of output 1681 [2022-12-14 11:33:38,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:38,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:38,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:39,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:39,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:39,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,077 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,149 INFO L217 Elim1Store]: Index analysis took 151 ms [2022-12-14 11:33:39,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 344 treesize of output 1543 [2022-12-14 11:33:39,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:39,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:39,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:39,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:39,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:39,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,359 INFO L217 Elim1Store]: Index analysis took 118 ms [2022-12-14 11:33:39,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 344 treesize of output 1807 [2022-12-14 11:33:39,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,466 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:33:39,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:39,499 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 11:33:40,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:40,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:40,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:40,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:40,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:40,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:40,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:40,447 INFO L217 Elim1Store]: Index analysis took 104 ms [2022-12-14 11:33:40,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 26 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 30 new quantified variables, introduced 0 case distinctions, treesize of input 4013 treesize of output 96228 [2022-12-14 11:33:44,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:44,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:44,098 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:47,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:33:47,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:47,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:33:47,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:35:27,370 INFO L217 Elim1Store]: Index analysis took 99569 ms [2022-12-14 11:35:39,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 124 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 128 new quantified variables, introduced 0 case distinctions, treesize of input 134774 treesize of output 15369300 [2022-12-14 11:36:54,097 WARN L233 SmtUtils]: Spent 1.16m on a formula simplification that was a NOOP. DAG size: 3077642 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 11:42:17,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:42:17,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:42:17,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:43:18,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:43:18,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:43:18,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:43:18,564 INFO L190 IndexEqualityManager]: detected not equals via solver