./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res2.c --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_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/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_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/res2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/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_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/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 105e7597bd9cfde6146cefe87563ba1bc48309677fb8b2f1d1f421bc92453e6b --- 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 15:54:18,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:54:18,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:54:18,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:54:18,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:54:18,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:54:18,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:54:18,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:54:18,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:54:18,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:54:18,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:54:18,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:54:18,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:54:18,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:54:18,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:54:18,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:54:18,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:54:18,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:54:18,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:54:18,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:54:18,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:54:18,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:54:18,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:54:18,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:54:18,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:54:18,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:54:18,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:54:18,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:54:18,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:54:18,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:54:18,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:54:18,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:54:18,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:54:18,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:54:18,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:54:18,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:54:18,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:54:18,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:54:18,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:54:18,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:54:18,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:54:18,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 15:54:18,220 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:54:18,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:54:18,220 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:54:18,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:54:18,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:54:18,221 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:54:18,222 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:54:18,222 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:54:18,222 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:54:18,222 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:54:18,222 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:54:18,222 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:54:18,223 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:54:18,223 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:54:18,223 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:54:18,223 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:54:18,224 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:54:18,224 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:54:18,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:54:18,225 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:54:18,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:54:18,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:54:18,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:54:18,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:54:18,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:54:18,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:54:18,226 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:54:18,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:54:18,226 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:54:18,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:54:18,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:54:18,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:54:18,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:54:18,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:54:18,227 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:54:18,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:54:18,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:54:18,228 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:54:18,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:54:18,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:54:18,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:54:18,228 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_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 105e7597bd9cfde6146cefe87563ba1bc48309677fb8b2f1d1f421bc92453e6b [2022-12-14 15:54:18,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:54:18,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:54:18,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:54:18,429 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:54:18,430 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:54:18,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-fpi/res2.c [2022-12-14 15:54:21,011 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:54:21,165 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:54:21,165 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/sv-benchmarks/c/array-fpi/res2.c [2022-12-14 15:54:21,170 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/data/3cdd883c3/8652d736328f4edb91ea0718fb348b7c/FLAG6f00f2f59 [2022-12-14 15:54:21,180 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/data/3cdd883c3/8652d736328f4edb91ea0718fb348b7c [2022-12-14 15:54:21,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:54:21,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:54:21,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:54:21,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:54:21,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:54:21,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:54:21" (1/1) ... [2022-12-14 15:54:21,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103d4cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:54:21, skipping insertion in model container [2022-12-14 15:54:21,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:54:21" (1/1) ... [2022-12-14 15:54:21,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:54:21,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:54:21,321 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_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/sv-benchmarks/c/array-fpi/res2.c[587,600] [2022-12-14 15:54:21,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:54:21,348 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:54:21,360 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_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/sv-benchmarks/c/array-fpi/res2.c[587,600] [2022-12-14 15:54:21,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:54:21,377 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:54:21,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:54:21 WrapperNode [2022-12-14 15:54:21,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:54:21,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:54:21,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:54:21,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:54:21,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:54:21" (1/1) ... [2022-12-14 15:54:21,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:54:21" (1/1) ... [2022-12-14 15:54:21,409 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 120 [2022-12-14 15:54:21,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:54:21,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:54:21,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:54:21,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:54:21,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:54:21" (1/1) ... [2022-12-14 15:54:21,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:54:21" (1/1) ... [2022-12-14 15:54:21,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:54:21" (1/1) ... [2022-12-14 15:54:21,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:54:21" (1/1) ... [2022-12-14 15:54:21,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:54:21" (1/1) ... [2022-12-14 15:54:21,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:54:21" (1/1) ... [2022-12-14 15:54:21,431 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:54:21" (1/1) ... [2022-12-14 15:54:21,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:54:21" (1/1) ... [2022-12-14 15:54:21,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:54:21,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:54:21,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:54:21,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:54:21,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:54:21" (1/1) ... [2022-12-14 15:54:21,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:54:21,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:54:21,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:54:21,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:54:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:54:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:54:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 15:54:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 15:54:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 15:54:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:54:21,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:54:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 15:54:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 15:54:21,555 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:54:21,557 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:54:21,703 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:54:21,754 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:54:21,755 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-14 15:54:21,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:54:21 BoogieIcfgContainer [2022-12-14 15:54:21,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:54:21,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:54:21,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:54:21,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:54:21,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:54:21" (1/3) ... [2022-12-14 15:54:21,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ef88e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:54:21, skipping insertion in model container [2022-12-14 15:54:21,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:54:21" (2/3) ... [2022-12-14 15:54:21,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ef88e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:54:21, skipping insertion in model container [2022-12-14 15:54:21,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:54:21" (3/3) ... [2022-12-14 15:54:21,765 INFO L112 eAbstractionObserver]: Analyzing ICFG res2.c [2022-12-14 15:54:21,783 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:54:21,784 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:54:21,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:54:21,822 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;@6e2022e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:54:21,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:54:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:54:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 15:54:21,829 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:54:21,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:54:21,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:54:21,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:54:21,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1251409213, now seen corresponding path program 1 times [2022-12-14 15:54:21,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:54:21,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404413058] [2022-12-14 15:54:21,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:54:21,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:54:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:54:22,095 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 15:54:22,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:54:22,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404413058] [2022-12-14 15:54:22,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404413058] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:54:22,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:54:22,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:54:22,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260630071] [2022-12-14 15:54:22,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:54:22,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:54:22,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:54:22,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:54:22,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:54:22,129 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 15:54:22,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:54:22,181 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2022-12-14 15:54:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:54:22,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-12-14 15:54:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:54:22,191 INFO L225 Difference]: With dead ends: 26 [2022-12-14 15:54:22,191 INFO L226 Difference]: Without dead ends: 12 [2022-12-14 15:54:22,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:54:22,195 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:54:22,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:54:22,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-12-14 15:54:22,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-12-14 15:54:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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 15:54:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-12-14 15:54:22,218 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 17 transitions. Word has length 10 [2022-12-14 15:54:22,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:54:22,218 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-12-14 15:54:22,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 15:54:22,219 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 17 transitions. [2022-12-14 15:54:22,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 15:54:22,219 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:54:22,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:54:22,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:54:22,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:54:22,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:54:22,221 INFO L85 PathProgramCache]: Analyzing trace with hash -28237853, now seen corresponding path program 1 times [2022-12-14 15:54:22,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:54:22,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775747944] [2022-12-14 15:54:22,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:54:22,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:54:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:54:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 15:54:22,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:54:22,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775747944] [2022-12-14 15:54:22,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775747944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:54:22,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:54:22,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:54:22,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186832644] [2022-12-14 15:54:22,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:54:22,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:54:22,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:54:22,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:54:22,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:54:22,327 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:54:22,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:54:22,371 INFO L93 Difference]: Finished difference Result 24 states and 37 transitions. [2022-12-14 15:54:22,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:54:22,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 15:54:22,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:54:22,373 INFO L225 Difference]: With dead ends: 24 [2022-12-14 15:54:22,373 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 15:54:22,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:54:22,374 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:54:22,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:54:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 15:54:22,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 15:54:22,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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 15:54:22,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-12-14 15:54:22,380 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 11 [2022-12-14 15:54:22,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:54:22,380 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-12-14 15:54:22,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:54:22,380 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2022-12-14 15:54:22,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 15:54:22,381 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:54:22,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:54:22,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 15:54:22,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:54:22,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:54:22,382 INFO L85 PathProgramCache]: Analyzing trace with hash -807325923, now seen corresponding path program 1 times [2022-12-14 15:54:22,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:54:22,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022736785] [2022-12-14 15:54:22,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:54:22,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:54:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:54:23,453 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 15:54:23,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:54:23,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022736785] [2022-12-14 15:54:23,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022736785] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:54:23,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890683614] [2022-12-14 15:54:23,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:54:23,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:54:23,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:54:23,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:54:23,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 15:54:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:54:23,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-14 15:54:23,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:54:23,613 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 15:54:23,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2022-12-14 15:54:23,637 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 11 treesize of output 7 [2022-12-14 15:54:23,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:23,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 15:54:23,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:23,871 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 39 treesize of output 26 [2022-12-14 15:54:24,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:24,041 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2022-12-14 15:54:24,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:24,232 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 0 case distinctions, treesize of input 50 treesize of output 36 [2022-12-14 15:54:24,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:24,412 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 0 case distinctions, treesize of input 43 treesize of output 40 [2022-12-14 15:54:24,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:24,606 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 0 case distinctions, treesize of input 63 treesize of output 48 [2022-12-14 15:54:24,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:24,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 19 [2022-12-14 15:54:24,863 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 15:54:24,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:54:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:54:55,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890683614] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:54:55,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [657582703] [2022-12-14 15:54:55,512 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 15:54:55,512 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:54:55,514 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:54:55,519 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:54:55,519 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:54:55,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:55,588 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 15:54:55,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-12-14 15:54:55,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:55,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:55,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:55,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:55,887 INFO L321 Elim1Store]: treesize reduction 247, result has 22.1 percent of original size [2022-12-14 15:54:55,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 93 [2022-12-14 15:54:55,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:55,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:55,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:55,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:55,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:55,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:55,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:56,238 INFO L321 Elim1Store]: treesize reduction 303, result has 18.8 percent of original size [2022-12-14 15:54:56,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 121 [2022-12-14 15:54:56,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:56,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:56,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-12-14 15:54:56,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:56,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:56,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:56,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:56,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:56,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:54:56,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:56,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:56,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:56,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:56,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:54:56,565 INFO L321 Elim1Store]: treesize reduction 214, result has 11.9 percent of original size [2022-12-14 15:54:56,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 602 treesize of output 591 [2022-12-14 15:54:56,703 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:54:56,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:54:56,776 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 15:54:56,777 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 15:54:56,874 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:54:56,874 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:54:56,896 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 15:54:56,937 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 15:54:56,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 77 [2022-12-14 15:54:56,966 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:54:57,012 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 15:54:57,012 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 15:54:57,090 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:54:57,090 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:54:57,137 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:54:57,175 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:54:57,197 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:54:57,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:54:57,250 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 15:54:57,251 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 15:54:57,342 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:54:57,342 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:54:57,387 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:54:58,122 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '281#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem20#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem20#1| (* 3 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 15:54:58,122 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:54:58,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:54:58,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 39 [2022-12-14 15:54:58,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923235268] [2022-12-14 15:54:58,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:54:58,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-14 15:54:58,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:54:58,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-14 15:54:58,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1539, Unknown=13, NotChecked=0, Total=1806 [2022-12-14 15:54:58,127 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:54:59,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:54:59,699 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-12-14 15:54:59,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 15:54:59,700 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 15:54:59,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:54:59,700 INFO L225 Difference]: With dead ends: 29 [2022-12-14 15:54:59,700 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 15:54:59,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=373, Invalid=2164, Unknown=13, NotChecked=0, Total=2550 [2022-12-14 15:54:59,701 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 15:54:59,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 37 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 15:54:59,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 15:54:59,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-12-14 15:54:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:54:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-12-14 15:54:59,707 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 16 [2022-12-14 15:54:59,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:54:59,707 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-12-14 15:54:59,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:54:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-12-14 15:54:59,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 15:54:59,708 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:54:59,708 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:54:59,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 15:54:59,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:54:59,910 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:54:59,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:54:59,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1100919138, now seen corresponding path program 2 times [2022-12-14 15:54:59,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:54:59,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164175826] [2022-12-14 15:54:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:54:59,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:54:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:55:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 15:55:00,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:55:00,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164175826] [2022-12-14 15:55:00,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164175826] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:55:00,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020039448] [2022-12-14 15:55:00,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:55:00,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:55:00,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:55:00,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:55:00,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 15:55:00,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 15:55:00,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:55:00,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 15:55:00,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:55:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 15:55:00,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:55:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 15:55:00,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020039448] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:55:00,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [224098267] [2022-12-14 15:55:00,162 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 15:55:00,162 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:55:00,163 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:55:00,163 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:55:00,163 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:55:00,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,216 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 15:55:00,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-12-14 15:55:00,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,524 INFO L321 Elim1Store]: treesize reduction 303, result has 18.8 percent of original size [2022-12-14 15:55:00,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 121 [2022-12-14 15:55:00,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 25 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-12-14 15:55:00,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-12-14 15:55:00,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:55:00,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:00,865 INFO L321 Elim1Store]: treesize reduction 214, result has 11.9 percent of original size [2022-12-14 15:55:00,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 602 treesize of output 591 [2022-12-14 15:55:00,964 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:55:00,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:55:01,024 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 15:55:01,025 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 15:55:01,113 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:55:01,114 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:55:01,144 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 15:55:01,169 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:55:01,198 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:55:01,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:55:01,265 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 15:55:01,265 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 15:55:01,346 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:55:01,346 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:55:01,382 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 15:55:01,400 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:55:01,450 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 15:55:01,450 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 15:55:01,518 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:55:01,518 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:55:01,543 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:55:01,933 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '502#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem20#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem20#1| (* 3 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 15:55:01,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:55:01,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:55:01,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-12-14 15:55:01,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912651852] [2022-12-14 15:55:01,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:55:01,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 15:55:01,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:55:01,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 15:55:01,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-12-14 15:55:01,935 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 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 15:55:02,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:55:02,056 INFO L93 Difference]: Finished difference Result 63 states and 86 transitions. [2022-12-14 15:55:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 15:55:02,056 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 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 17 [2022-12-14 15:55:02,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:55:02,057 INFO L225 Difference]: With dead ends: 63 [2022-12-14 15:55:02,057 INFO L226 Difference]: Without dead ends: 35 [2022-12-14 15:55:02,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-12-14 15:55:02,057 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 23 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:55:02,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 8 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:55:02,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-14 15:55:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2022-12-14 15:55:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:55:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-12-14 15:55:02,062 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 17 [2022-12-14 15:55:02,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:55:02,062 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-12-14 15:55:02,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 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 15:55:02,063 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-12-14 15:55:02,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 15:55:02,063 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:55:02,063 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:55:02,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 15:55:02,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:55:02,265 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:55:02,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:55:02,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1990195912, now seen corresponding path program 3 times [2022-12-14 15:55:02,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:55:02,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737400897] [2022-12-14 15:55:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:55:02,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:55:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:55:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 15:55:02,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:55:02,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737400897] [2022-12-14 15:55:02,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737400897] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:55:02,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644560404] [2022-12-14 15:55:02,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 15:55:02,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:55:02,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:55:02,406 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:55:02,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 15:55:02,457 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 15:55:02,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:55:02,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 15:55:02,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:55:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 15:55:02,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:55:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 15:55:02,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644560404] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:55:02,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [870146015] [2022-12-14 15:55:02,583 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 15:55:02,583 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:55:02,584 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:55:02,584 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:55:02,584 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:55:02,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:02,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:02,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:02,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:02,862 INFO L321 Elim1Store]: treesize reduction 247, result has 22.1 percent of original size [2022-12-14 15:55:02,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 93 [2022-12-14 15:55:02,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:02,903 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 15:55:02,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-12-14 15:55:02,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:02,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:02,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:02,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:02,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:02,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:02,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:03,205 INFO L321 Elim1Store]: treesize reduction 303, result has 18.8 percent of original size [2022-12-14 15:55:03,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 121 [2022-12-14 15:55:03,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:03,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:03,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-12-14 15:55:03,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:03,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:03,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:03,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:03,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:03,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:55:03,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:03,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:03,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:03,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:03,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:03,498 INFO L321 Elim1Store]: treesize reduction 214, result has 11.9 percent of original size [2022-12-14 15:55:03,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 602 treesize of output 591 [2022-12-14 15:55:03,601 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:55:03,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:55:03,664 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 15:55:03,665 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 15:55:03,750 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:55:03,751 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:55:03,783 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 15:55:03,810 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:55:03,836 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:55:03,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:55:03,900 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 15:55:03,900 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 15:55:03,980 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:55:03,980 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:55:04,016 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:55:04,043 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:55:04,064 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:55:04,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:55:04,109 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 15:55:04,110 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 15:55:04,189 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:55:04,190 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:55:04,211 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:55:04,658 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '786#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem20#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem20#1| (* 3 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 15:55:04,659 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:55:04,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:55:04,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-12-14 15:55:04,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785240859] [2022-12-14 15:55:04,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:55:04,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 15:55:04,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:55:04,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 15:55:04,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-12-14 15:55:04,660 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:55:04,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:55:04,825 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2022-12-14 15:55:04,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 15:55:04,826 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 15:55:04,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:55:04,826 INFO L225 Difference]: With dead ends: 32 [2022-12-14 15:55:04,826 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 15:55:04,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-12-14 15:55:04,827 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:55:04,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 6 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:55:04,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 15:55:04,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 15:55:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 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 15:55:04,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-12-14 15:55:04,831 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 18 [2022-12-14 15:55:04,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:55:04,831 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-12-14 15:55:04,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:55:04,831 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-12-14 15:55:04,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 15:55:04,832 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:55:04,832 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:55:04,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 15:55:05,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:55:05,033 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:55:05,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:55:05,034 INFO L85 PathProgramCache]: Analyzing trace with hash -418289731, now seen corresponding path program 4 times [2022-12-14 15:55:05,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:55:05,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821411289] [2022-12-14 15:55:05,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:55:05,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:55:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:55:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:55:06,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:55:06,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821411289] [2022-12-14 15:55:06,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821411289] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:55:06,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231402571] [2022-12-14 15:55:06,981 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 15:55:06,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:55:06,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:55:06,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:55:06,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 15:55:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:55:07,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 90 conjunts are in the unsatisfiable core [2022-12-14 15:55:07,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:55:07,059 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 15:55:07,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2022-12-14 15:55:07,083 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 11 treesize of output 7 [2022-12-14 15:55:07,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 15:55:07,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:07,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 30 [2022-12-14 15:55:07,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:07,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:55:07,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 43 [2022-12-14 15:55:07,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 36 [2022-12-14 15:55:07,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:07,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:07,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:55:07,805 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 15:55:07,805 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 1 case distinctions, treesize of input 48 treesize of output 49 [2022-12-14 15:55:07,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:07,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:07,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:55:08,029 INFO L321 Elim1Store]: treesize reduction 44, result has 31.3 percent of original size [2022-12-14 15:55:08,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 83 treesize of output 83 [2022-12-14 15:55:08,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:08,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:55:08,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:08,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 43 [2022-12-14 15:55:08,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:08,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2022-12-14 15:55:08,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:08,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 46 [2022-12-14 15:55:08,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:08,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:08,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 53 [2022-12-14 15:55:09,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:09,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:09,118 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 0 case distinctions, treesize of input 73 treesize of output 61 [2022-12-14 15:55:09,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:09,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 60 [2022-12-14 15:55:09,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:55:09,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 24 [2022-12-14 15:55:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:55:09,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:57:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:57:11,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231402571] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:57:11,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1113626350] [2022-12-14 15:57:11,794 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 15:57:11,794 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:57:11,794 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:57:11,794 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:57:11,794 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:57:11,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:11,838 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 15:57:11,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-12-14 15:57:11,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:11,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:11,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:11,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:11,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:11,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:11,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:12,120 INFO L321 Elim1Store]: treesize reduction 303, result has 18.8 percent of original size [2022-12-14 15:57:12,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 121 [2022-12-14 15:57:12,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:12,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:12,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:12,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:12,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 25 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-12-14 15:57:12,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:12,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:12,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-12-14 15:57:12,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:12,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:12,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:12,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:12,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:57:12,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:57:12,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:57:12,414 INFO L321 Elim1Store]: treesize reduction 186, result has 18.4 percent of original size [2022-12-14 15:57:12,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 26 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 597 treesize of output 592 [2022-12-14 15:57:12,518 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:57:12,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:57:12,558 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 15:57:12,559 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 15:57:12,638 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:57:12,638 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:57:12,679 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:57:12,702 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:57:12,749 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 15:57:12,750 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 15:57:12,833 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:57:12,833 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:57:12,869 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:57:12,900 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:57:12,917 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:57:12,964 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 15:57:12,964 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 15:57:13,041 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:57:13,042 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:57:13,075 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:57:15,874 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1077#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem20#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem20#1| (* 3 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 15:57:15,875 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:57:15,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:57:15,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 57 [2022-12-14 15:57:15,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843874484] [2022-12-14 15:57:15,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:57:15,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-12-14 15:57:15,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:57:15,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-12-14 15:57:15,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=3277, Unknown=47, NotChecked=0, Total=3660 [2022-12-14 15:57:15,880 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 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 15:58:04,023 WARN L233 SmtUtils]: Spent 22.58s on a formula simplification. DAG size of input: 192 DAG size of output: 119 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:58:06,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 15:58:07,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:58:11,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 15:58:19,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 15:58:45,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 15:58:47,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 15:58:50,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 15:58:52,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 15:58:54,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 15:58:59,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:58:59,599 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2022-12-14 15:58:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 15:58:59,600 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 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 22 [2022-12-14 15:58:59,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:58:59,600 INFO L225 Difference]: With dead ends: 47 [2022-12-14 15:58:59,600 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 15:58:59,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 16 SyntacticMatches, 10 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2412 ImplicationChecksByTransitivity, 202.5s TimeCoverageRelationStatistics Valid=635, Invalid=5948, Unknown=59, NotChecked=0, Total=6642 [2022-12-14 15:58:59,602 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 61 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2022-12-14 15:58:59,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 61 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 886 Invalid, 8 Unknown, 0 Unchecked, 25.9s Time] [2022-12-14 15:58:59,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 15:58:59,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2022-12-14 15:58:59,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 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 15:58:59,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2022-12-14 15:58:59,611 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 22 [2022-12-14 15:58:59,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:58:59,611 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2022-12-14 15:58:59,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 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 15:58:59,611 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2022-12-14 15:58:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 15:58:59,611 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:58:59,611 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:58:59,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 15:58:59,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 15:58:59,813 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:58:59,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:58:59,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1639100184, now seen corresponding path program 5 times [2022-12-14 15:58:59,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:58:59,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959879555] [2022-12-14 15:58:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:58:59,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:58:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:58:59,935 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 15:58:59,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:58:59,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959879555] [2022-12-14 15:58:59,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959879555] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:58:59,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281978920] [2022-12-14 15:58:59,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:58:59,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:58:59,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:58:59,937 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:58:59,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 15:59:00,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 15:59:00,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:59:00,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 15:59:00,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:59:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 15:59:00,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:59:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 15:59:00,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281978920] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:59:00,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1515162020] [2022-12-14 15:59:00,241 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 15:59:00,241 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:59:00,241 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:59:00,241 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:59:00,241 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:59:00,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,290 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 15:59:00,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-12-14 15:59:00,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,626 INFO L321 Elim1Store]: treesize reduction 303, result has 18.8 percent of original size [2022-12-14 15:59:00,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 121 [2022-12-14 15:59:00,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 25 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 57 [2022-12-14 15:59:00,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-12-14 15:59:00,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:59:00,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:00,894 INFO L321 Elim1Store]: treesize reduction 214, result has 11.9 percent of original size [2022-12-14 15:59:00,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 602 treesize of output 591 [2022-12-14 15:59:00,988 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:59:01,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:59:01,048 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 15:59:01,049 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 15:59:01,120 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:59:01,121 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:59:01,159 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 15:59:01,188 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:59:01,207 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:59:01,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:59:01,268 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 15:59:01,268 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 15:59:01,344 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:59:01,344 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:59:01,381 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:59:01,413 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:59:01,428 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:59:01,466 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 15:59:01,466 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 15:59:01,541 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:59:01,541 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:59:01,565 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:59:02,020 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1417#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem20#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem20#1| (* 3 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 15:59:02,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:59:02,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:59:02,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-12-14 15:59:02,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914803314] [2022-12-14 15:59:02,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:59:02,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 15:59:02,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:59:02,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 15:59:02,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-12-14 15:59:02,022 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:59:02,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:59:02,216 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2022-12-14 15:59:02,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 15:59:02,216 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-14 15:59:02,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:59:02,217 INFO L225 Difference]: With dead ends: 83 [2022-12-14 15:59:02,217 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 15:59:02,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-12-14 15:59:02,218 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 23 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:59:02,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 12 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:59:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 15:59:02,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-12-14 15:59:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:59:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-12-14 15:59:02,227 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 23 [2022-12-14 15:59:02,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:59:02,227 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-12-14 15:59:02,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:59:02,227 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-12-14 15:59:02,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 15:59:02,228 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:59:02,228 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:59:02,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 15:59:02,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 15:59:02,428 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:59:02,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:59:02,429 INFO L85 PathProgramCache]: Analyzing trace with hash 862661634, now seen corresponding path program 6 times [2022-12-14 15:59:02,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:59:02,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567279099] [2022-12-14 15:59:02,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:59:02,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:59:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:59:02,567 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 15:59:02,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:59:02,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567279099] [2022-12-14 15:59:02,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567279099] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:59:02,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106365826] [2022-12-14 15:59:02,568 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 15:59:02,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:59:02,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:59:02,569 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:59:02,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 15:59:02,635 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 15:59:02,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:59:02,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 15:59:02,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:59:02,735 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 15:59:02,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:59:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 15:59:02,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106365826] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:59:02,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [240789786] [2022-12-14 15:59:02,827 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 15:59:02,827 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:59:02,827 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:59:02,827 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:59:02,827 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:59:02,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:02,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:02,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:02,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,139 INFO L321 Elim1Store]: treesize reduction 247, result has 22.1 percent of original size [2022-12-14 15:59:03,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 93 [2022-12-14 15:59:03,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,455 INFO L321 Elim1Store]: treesize reduction 303, result has 18.8 percent of original size [2022-12-14 15:59:03,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 121 [2022-12-14 15:59:03,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-12-14 15:59:03,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-12-14 15:59:03,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:59:03,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:03,780 INFO L321 Elim1Store]: treesize reduction 214, result has 11.9 percent of original size [2022-12-14 15:59:03,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 602 treesize of output 591 [2022-12-14 15:59:03,888 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:59:03,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:59:03,963 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 15:59:03,963 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 15:59:04,050 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:59:04,050 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:59:04,092 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 15:59:04,118 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:59:04,145 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:59:04,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:59:04,224 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 15:59:04,224 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 15:59:04,301 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:59:04,301 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:59:04,344 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 15:59:04,365 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 15:59:04,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:59:04,410 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 15:59:04,410 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 15:59:04,490 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 15:59:04,490 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 15:59:04,514 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:59:05,013 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1800#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem20#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem20#1| (* 3 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 15:59:05,013 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:59:05,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:59:05,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-12-14 15:59:05,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547443559] [2022-12-14 15:59:05,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:59:05,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 15:59:05,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:59:05,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 15:59:05,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-12-14 15:59:05,015 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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 15:59:05,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:59:05,277 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2022-12-14 15:59:05,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 15:59:05,278 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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 24 [2022-12-14 15:59:05,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:59:05,278 INFO L225 Difference]: With dead ends: 41 [2022-12-14 15:59:05,278 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 15:59:05,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-12-14 15:59:05,279 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 14 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:59:05,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:59:05,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 15:59:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-14 15:59:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:59:05,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-12-14 15:59:05,286 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 24 [2022-12-14 15:59:05,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:59:05,286 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-12-14 15:59:05,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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 15:59:05,287 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-12-14 15:59:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 15:59:05,287 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:59:05,287 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:59:05,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 15:59:05,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:59:05,489 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:59:05,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:59:05,490 INFO L85 PathProgramCache]: Analyzing trace with hash 596492701, now seen corresponding path program 7 times [2022-12-14 15:59:05,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:59:05,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663892742] [2022-12-14 15:59:05,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:59:05,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:59:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:59:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:59:08,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:59:08,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663892742] [2022-12-14 15:59:08,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663892742] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:59:08,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906922377] [2022-12-14 15:59:08,696 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 15:59:08,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:59:08,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:59:08,697 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:59:08,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f0031f-e290-4cd4-bbbf-94c0b2f8c435/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 15:59:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:59:08,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 125 conjunts are in the unsatisfiable core [2022-12-14 15:59:08,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:59:08,815 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 15:59:08,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2022-12-14 15:59:08,834 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 11 treesize of output 7 [2022-12-14 15:59:08,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-12-14 15:59:09,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:09,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 30 [2022-12-14 15:59:09,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:09,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:09,257 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 0 case distinctions, treesize of input 37 treesize of output 42 [2022-12-14 15:59:09,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:09,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:09,629 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 0 case distinctions, treesize of input 57 treesize of output 50 [2022-12-14 15:59:09,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:09,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:09,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:09,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:59:09,818 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 53 [2022-12-14 15:59:10,026 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 0 case distinctions, treesize of input 63 treesize of output 48 [2022-12-14 15:59:10,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:10,417 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 15:59:10,418 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 1 case distinctions, treesize of input 55 treesize of output 55 [2022-12-14 15:59:10,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:10,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:10,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:10,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:59:10,743 INFO L321 Elim1Store]: treesize reduction 64, result has 23.8 percent of original size [2022-12-14 15:59:10,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 110 treesize of output 108 [2022-12-14 15:59:11,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:11,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:11,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:11,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:11,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:59:11,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:11,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:59:11,163 INFO L321 Elim1Store]: treesize reduction 64, result has 23.8 percent of original size [2022-12-14 15:59:11,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 108 treesize of output 110 [2022-12-14 15:59:11,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:11,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:11,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:11,496 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 0 case distinctions, treesize of input 57 treesize of output 50 [2022-12-14 15:59:11,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:11,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:11,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:11,663 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 0 case distinctions, treesize of input 65 treesize of output 52 [2022-12-14 15:59:11,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:11,823 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 0 case distinctions, treesize of input 64 treesize of output 49 [2022-12-14 15:59:12,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:12,177 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 0 case distinctions, treesize of input 61 treesize of output 57 [2022-12-14 15:59:12,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:12,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:12,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 64 [2022-12-14 15:59:12,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:12,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:12,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:12,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 76 [2022-12-14 15:59:12,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:12,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:12,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:12,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 84 [2022-12-14 15:59:13,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:13,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:13,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:13,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:13,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:13,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:59:13,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 88 [2022-12-14 15:59:13,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:13,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 82 [2022-12-14 15:59:13,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:59:13,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 32 [2022-12-14 15:59:13,872 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:59:13,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 16:04:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 25 refuted. 11 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:04:44,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906922377] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 16:04:44,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [405662260] [2022-12-14 16:04:44,238 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 16:04:44,238 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 16:04:44,238 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 16:04:44,238 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 16:04:44,238 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 16:04:44,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:44,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:44,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:44,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:44,515 INFO L321 Elim1Store]: treesize reduction 247, result has 22.1 percent of original size [2022-12-14 16:04:44,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 93 [2022-12-14 16:04:44,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:44,558 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 16:04:44,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-12-14 16:04:44,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:44,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:44,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:44,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:44,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:44,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:44,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:44,909 INFO L321 Elim1Store]: treesize reduction 303, result has 18.8 percent of original size [2022-12-14 16:04:44,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 121 [2022-12-14 16:04:44,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:44,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:44,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-12-14 16:04:45,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:45,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:45,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:45,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:45,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:45,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 16:04:45,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:45,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:45,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:45,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:45,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 16:04:45,195 INFO L321 Elim1Store]: treesize reduction 214, result has 11.9 percent of original size [2022-12-14 16:04:45,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 602 treesize of output 591 [2022-12-14 16:04:45,297 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 16:04:45,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 16:04:45,371 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 16:04:45,371 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 16:04:45,450 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 16:04:45,450 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 16:04:45,470 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 16:04:45,513 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 16:04:45,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 77 [2022-12-14 16:04:45,550 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 16:04:45,598 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 16:04:45,598 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 16:04:45,680 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 16:04:45,680 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 16:04:45,726 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 16:04:45,745 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 16:04:45,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 16:04:45,799 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 16:04:45,800 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 16:04:45,888 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 16:04:45,888 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 16:04:45,911 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 16:04:48,409 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2177#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem20#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem20#1| (* 3 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 16:04:48,409 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 16:04:48,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 16:04:48,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 75 [2022-12-14 16:04:48,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982171148] [2022-12-14 16:04:48,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 16:04:48,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-12-14 16:04:48,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 16:04:48,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-12-14 16:04:48,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=5575, Unknown=107, NotChecked=0, Total=6162 [2022-12-14 16:04:48,411 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 75 states, 75 states have (on average 1.04) internal successors, (78), 75 states have internal predecessors, (78), 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 16:05:04,519 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 165 DAG size of output: 124 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:05:10,392 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse27 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse16 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse17 (+ .cse27 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse30 (* c_~N~0 3))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse11 (+ .cse30 1)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse13 (+ |c_ULTIMATE.start_main_~c~0#1.offset| 4)) (.cse10 (+ 8 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse6 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse12 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse29 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse28 (= (select .cse16 .cse17) 1))) (and (< 2 c_~N~0) (or (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (forall ((v_ArrVal_639 Int) (v_ArrVal_649 Int) (v_ArrVal_637 Int) (v_ArrVal_648 Int) (v_ArrVal_658 Int) (v_ArrVal_646 Int) (v_ArrVal_635 Int) (v_ArrVal_656 Int) (v_ArrVal_644 Int) (v_ArrVal_633 Int) (v_ArrVal_632 Int) (v_ArrVal_654 Int) (v_ArrVal_641 Int) (v_ArrVal_651 Int) (v_ArrVal_660 Int)) (let ((.cse7 (store .cse16 .cse17 v_ArrVal_632))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse7))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (let ((.cse15 (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_637)))) (store .cse15 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (select .cse15 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_639) .cse6 v_ArrVal_641) .cse12 v_ArrVal_644))))) (let ((.cse4 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse9 (let ((.cse14 (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_649)))) (store .cse14 |c_ULTIMATE.start_main_~c~0#1.base| (store (store (store (select .cse14 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_ArrVal_651) .cse13 v_ArrVal_654) .cse10 v_ArrVal_656))))) (let ((.cse3 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_635 (+ v_ArrVal_633 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_633)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_632 1)) (not (<= v_ArrVal_639 1)) (not (<= v_ArrVal_658 (+ v_ArrVal_651 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_646 (+ (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|) v_ArrVal_639))) (not (<= v_ArrVal_648 (+ v_ArrVal_646 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_646)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))) (not (<= v_ArrVal_641 1)) (not (<= v_ArrVal_633 (+ (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= v_ArrVal_637 (+ v_ArrVal_635 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_635)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))) (not (<= v_ArrVal_651 1)) (not (<= v_ArrVal_656 1)) (< (+ v_ArrVal_660 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_660)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse10)) .cse11) (not (<= v_ArrVal_649 (+ v_ArrVal_648 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_648)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse12)))) (not (<= v_ArrVal_660 (+ v_ArrVal_658 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_658)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse13)))) (not (<= v_ArrVal_654 1)) (not (<= v_ArrVal_644 1)))))))))))) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (<= (mod c_~N~0 4294967296) 536870911) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (<= 3 c_~N~0) (<= (+ |c_ULTIMATE.start_main_~b~0#1.base| 2) |c_ULTIMATE.start_main_~#sum~0#1.base|) (< 3 .cse17) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (or (not (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) c_~N~0)) (forall ((v_ArrVal_629 Int) (v_ArrVal_639 Int) (v_ArrVal_649 Int) (v_ArrVal_637 Int) (v_ArrVal_648 Int) (v_ArrVal_658 Int) (v_ArrVal_635 Int) (v_ArrVal_646 Int) (v_ArrVal_656 Int) (v_ArrVal_633 Int) (v_ArrVal_644 Int) (v_ArrVal_632 Int) (v_ArrVal_654 Int) (v_ArrVal_641 Int) (v_ArrVal_651 Int) (v_ArrVal_660 Int)) (let ((.cse19 (store (store .cse16 .cse17 v_ArrVal_629) (+ .cse27 |c_ULTIMATE.start_main_~a~0#1.offset| 4) v_ArrVal_632))) (let ((.cse24 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse19))) (let ((.cse18 (select .cse24 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse20 (let ((.cse26 (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_637)))) (store .cse26 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (select .cse26 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_639) .cse6 v_ArrVal_641) .cse12 v_ArrVal_644))))) (let ((.cse21 (select .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse22 (let ((.cse25 (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_649)))) (store .cse25 |c_ULTIMATE.start_main_~c~0#1.base| (store (store (store (select .cse25 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_ArrVal_651) .cse13 v_ArrVal_654) .cse10 v_ArrVal_656))))) (let ((.cse23 (select .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_633 (+ (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse19 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= v_ArrVal_632 1)) (not (<= v_ArrVal_648 (+ v_ArrVal_646 (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_646)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))) (not (<= v_ArrVal_649 (+ v_ArrVal_648 (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_648)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse12)))) (not (<= v_ArrVal_639 1)) (not (<= v_ArrVal_660 (+ v_ArrVal_658 (select (select (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_658)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse13)))) (not (<= v_ArrVal_646 (+ v_ArrVal_639 (select .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_641 1)) (not (<= v_ArrVal_635 (+ (select (select (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_633)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) v_ArrVal_633))) (< (+ v_ArrVal_660 (select (select (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_660)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse10)) .cse11) (not (<= v_ArrVal_637 (+ v_ArrVal_635 (select (select (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_635)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))) (not (<= v_ArrVal_651 1)) (not (<= v_ArrVal_656 1)) (not (<= v_ArrVal_629 1)) (not (<= v_ArrVal_658 (+ v_ArrVal_651 (select .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_654 1)) (not (<= v_ArrVal_644 1)))))))))))) (<= c_~N~0 3) (or (and (< 7 .cse17) .cse28 (<= .cse17 8) (<= (+ .cse29 7) .cse30)) (<= (* c_~N~0 4) (+ .cse27 3 |c_ULTIMATE.start_main_~a~0#1.offset|))) (= |c_ULTIMATE.start_main_~c~0#1.offset| 0) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse34 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse31 (select .cse34 8)) (.cse32 (select .cse34 0)) (.cse33 (select .cse34 4))) (and (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (<= .cse31 1) (<= .cse32 1) (<= .cse29 (+ .cse31 .cse32 .cse33)) (<= .cse33 1) (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)))))) (or (and (<= (+ .cse29 8) .cse30) (= (select .cse16 8) 1) .cse28) (not (= .cse17 4))))))) is different from true [2022-12-14 16:05:12,439 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse28 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse11 (+ (* c_~N~0 3) 1)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse13 (+ |c_ULTIMATE.start_main_~c~0#1.offset| 4)) (.cse10 (+ 8 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse6 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse12 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse16 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse17 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse27 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (< 2 c_~N~0) (or (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (forall ((v_ArrVal_639 Int) (v_ArrVal_649 Int) (v_ArrVal_637 Int) (v_ArrVal_648 Int) (v_ArrVal_658 Int) (v_ArrVal_646 Int) (v_ArrVal_635 Int) (v_ArrVal_656 Int) (v_ArrVal_644 Int) (v_ArrVal_633 Int) (v_ArrVal_632 Int) (v_ArrVal_654 Int) (v_ArrVal_641 Int) (v_ArrVal_651 Int) (v_ArrVal_660 Int)) (let ((.cse7 (store .cse16 .cse17 v_ArrVal_632))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse7))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (let ((.cse15 (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_637)))) (store .cse15 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (select .cse15 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_639) .cse6 v_ArrVal_641) .cse12 v_ArrVal_644))))) (let ((.cse4 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse9 (let ((.cse14 (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_649)))) (store .cse14 |c_ULTIMATE.start_main_~c~0#1.base| (store (store (store (select .cse14 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_ArrVal_651) .cse13 v_ArrVal_654) .cse10 v_ArrVal_656))))) (let ((.cse3 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_635 (+ v_ArrVal_633 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_633)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_632 1)) (not (<= v_ArrVal_639 1)) (not (<= v_ArrVal_658 (+ v_ArrVal_651 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_646 (+ (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|) v_ArrVal_639))) (not (<= v_ArrVal_648 (+ v_ArrVal_646 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_646)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))) (not (<= v_ArrVal_641 1)) (not (<= v_ArrVal_633 (+ (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= v_ArrVal_637 (+ v_ArrVal_635 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_635)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))) (not (<= v_ArrVal_651 1)) (not (<= v_ArrVal_656 1)) (< (+ v_ArrVal_660 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_660)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse10)) .cse11) (not (<= v_ArrVal_649 (+ v_ArrVal_648 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_648)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse12)))) (not (<= v_ArrVal_660 (+ v_ArrVal_658 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_658)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse13)))) (not (<= v_ArrVal_654 1)) (not (<= v_ArrVal_644 1)))))))))))) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (<= (mod c_~N~0 4294967296) 536870911) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (<= (+ |c_ULTIMATE.start_main_~b~0#1.base| 2) |c_ULTIMATE.start_main_~#sum~0#1.base|) (or (forall ((v_ArrVal_629 Int) (v_ArrVal_639 Int) (v_ArrVal_627 Int) (v_ArrVal_649 Int) (v_ArrVal_637 Int) (v_ArrVal_648 Int) (v_ArrVal_658 Int) (v_ArrVal_646 Int) (v_ArrVal_635 Int) (v_ArrVal_656 Int) (v_ArrVal_644 Int) (v_ArrVal_633 Int) (v_ArrVal_632 Int) (v_ArrVal_654 Int) (v_ArrVal_641 Int) (v_ArrVal_651 Int) (v_ArrVal_660 Int)) (let ((.cse24 (store (store (store .cse16 .cse17 v_ArrVal_627) .cse27 v_ArrVal_629) (+ .cse28 8 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_632))) (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse24))) (let ((.cse23 (select .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse20 (let ((.cse26 (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_637)))) (store .cse26 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (select .cse26 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_639) .cse6 v_ArrVal_641) .cse12 v_ArrVal_644))))) (let ((.cse21 (select .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse18 (let ((.cse25 (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_649)))) (store .cse25 |c_ULTIMATE.start_main_~c~0#1.base| (store (store (store (select .cse25 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_ArrVal_651) .cse13 v_ArrVal_654) .cse10 v_ArrVal_656))))) (let ((.cse19 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_632 1)) (< (+ v_ArrVal_660 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_660)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse10)) .cse11) (not (<= v_ArrVal_658 (+ v_ArrVal_651 (select .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_639 1)) (not (<= v_ArrVal_641 1)) (not (<= v_ArrVal_649 (+ v_ArrVal_648 (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_648)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse12)))) (not (<= v_ArrVal_637 (+ v_ArrVal_635 (select (select (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_635)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))) (not (<= v_ArrVal_646 (+ v_ArrVal_639 (select .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_651 1)) (not (<= v_ArrVal_633 (+ (select .cse24 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_648 (+ v_ArrVal_646 (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_646)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))) (not (<= v_ArrVal_627 1)) (not (<= v_ArrVal_656 1)) (not (<= v_ArrVal_629 1)) (not (<= v_ArrVal_660 (+ v_ArrVal_658 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_658)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse13)))) (not (<= v_ArrVal_654 1)) (not (<= v_ArrVal_635 (+ v_ArrVal_633 (select (select (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_633)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_644 1))))))))))) (not (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0))) (or (not (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) c_~N~0)) (forall ((v_ArrVal_629 Int) (v_ArrVal_639 Int) (v_ArrVal_649 Int) (v_ArrVal_637 Int) (v_ArrVal_648 Int) (v_ArrVal_658 Int) (v_ArrVal_635 Int) (v_ArrVal_646 Int) (v_ArrVal_656 Int) (v_ArrVal_633 Int) (v_ArrVal_644 Int) (v_ArrVal_632 Int) (v_ArrVal_654 Int) (v_ArrVal_641 Int) (v_ArrVal_651 Int) (v_ArrVal_660 Int)) (let ((.cse30 (store (store .cse16 .cse17 v_ArrVal_629) .cse27 v_ArrVal_632))) (let ((.cse35 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse30))) (let ((.cse29 (select .cse35 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse31 (let ((.cse37 (store .cse35 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_637)))) (store .cse37 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (select .cse37 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_639) .cse6 v_ArrVal_641) .cse12 v_ArrVal_644))))) (let ((.cse32 (select .cse31 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse33 (let ((.cse36 (store .cse31 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_649)))) (store .cse36 |c_ULTIMATE.start_main_~c~0#1.base| (store (store (store (select .cse36 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_ArrVal_651) .cse13 v_ArrVal_654) .cse10 v_ArrVal_656))))) (let ((.cse34 (select .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_633 (+ (select .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse30 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= v_ArrVal_632 1)) (not (<= v_ArrVal_648 (+ v_ArrVal_646 (select (select (store .cse31 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_646)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))) (not (<= v_ArrVal_649 (+ v_ArrVal_648 (select (select (store .cse31 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_648)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse12)))) (not (<= v_ArrVal_639 1)) (not (<= v_ArrVal_660 (+ v_ArrVal_658 (select (select (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse34 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_658)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse13)))) (not (<= v_ArrVal_646 (+ v_ArrVal_639 (select .cse32 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_641 1)) (not (<= v_ArrVal_635 (+ (select (select (store .cse35 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_633)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) v_ArrVal_633))) (< (+ v_ArrVal_660 (select (select (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse34 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_660)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse10)) .cse11) (not (<= v_ArrVal_637 (+ v_ArrVal_635 (select (select (store .cse35 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_635)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))) (not (<= v_ArrVal_651 1)) (not (<= v_ArrVal_656 1)) (not (<= v_ArrVal_629 1)) (not (<= v_ArrVal_658 (+ v_ArrVal_651 (select .cse34 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_654 1)) (not (<= v_ArrVal_644 1)))))))))))) (= |c_ULTIMATE.start_main_~c~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse41 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse38 (select .cse41 8)) (.cse39 (select .cse41 0)) (.cse40 (select .cse41 4))) (and (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~c~0#1.base|)) (<= .cse38 1) (<= .cse39 1) (<= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (+ .cse38 .cse39 .cse40)) (<= .cse40 1) (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|))))))))) is different from true [2022-12-14 16:05:36,929 WARN L233 SmtUtils]: Spent 12.77s on a formula simplification. DAG size of input: 179 DAG size of output: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:05:40,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 16:06:06,662 WARN L233 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 168 DAG size of output: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:06:09,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 16:06:11,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 16:06:27,032 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 158 DAG size of output: 158 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:06:31,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 16:06:33,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 16:06:48,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 16:06:51,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 16:07:20,593 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification that was a NOOP. DAG size: 127 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 16:07:37,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 16:07:50,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 16:08:09,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 16:08:27,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 16:08:29,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 16:09:15,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 16:09:16,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 16:09:18,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]