./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array17_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/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_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array17_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/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_135ff6b1-d706-4546-b458-c6c863f28255/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 1bbdbab39b20ef0f9bb51ea0fb71bf773586866898cf5babc34262381f9b9103 --- 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 15:03:16,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:03:16,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:03:16,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:03:16,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:03:16,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:03:16,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:03:16,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:03:16,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:03:16,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:03:16,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:03:16,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:03:16,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:03:16,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:03:16,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:03:16,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:03:16,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:03:16,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:03:16,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:03:16,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:03:16,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:03:16,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:03:16,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:03:16,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:03:16,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:03:16,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:03:16,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:03:16,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:03:16,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:03:16,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:03:16,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:03:16,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:03:16,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:03:16,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:03:16,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:03:16,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:03:16,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:03:16,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:03:16,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:03:16,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:03:16,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:03:16,173 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 15:03:16,193 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:03:16,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:03:16,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:03:16,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:03:16,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:03:16,194 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:03:16,195 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:03:16,195 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:03:16,195 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:03:16,195 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:03:16,195 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:03:16,195 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:03:16,196 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:03:16,196 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:03:16,196 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:03:16,196 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:03:16,196 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:03:16,196 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:03:16,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:03:16,197 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:03:16,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:03:16,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:03:16,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:03:16,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:03:16,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:03:16,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:03:16,198 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:03:16,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:03:16,199 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:03:16,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:03:16,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:03:16,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:03:16,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:03:16,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:03:16,200 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:03:16,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:03:16,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:03:16,200 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:03:16,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:03:16,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:03:16,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:03:16,201 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_135ff6b1-d706-4546-b458-c6c863f28255/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bbdbab39b20ef0f9bb51ea0fb71bf773586866898cf5babc34262381f9b9103 [2022-12-14 15:03:16,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:03:16,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:03:16,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:03:16,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:03:16,417 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:03:16,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-patterns/array17_pattern.c [2022-12-14 15:03:19,064 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:03:19,211 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:03:19,211 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/sv-benchmarks/c/array-patterns/array17_pattern.c [2022-12-14 15:03:19,216 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/data/34383ad39/0f89ba76afc64bfe922a80ab6231faef/FLAG2547625aa [2022-12-14 15:03:19,227 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/data/34383ad39/0f89ba76afc64bfe922a80ab6231faef [2022-12-14 15:03:19,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:03:19,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:03:19,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:03:19,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:03:19,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:03:19,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:03:19" (1/1) ... [2022-12-14 15:03:19,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc6d07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:03:19, skipping insertion in model container [2022-12-14 15:03:19,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:03:19" (1/1) ... [2022-12-14 15:03:19,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:03:19,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:03:19,354 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_135ff6b1-d706-4546-b458-c6c863f28255/sv-benchmarks/c/array-patterns/array17_pattern.c[1441,1454] [2022-12-14 15:03:19,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:03:19,376 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:03:19,384 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_135ff6b1-d706-4546-b458-c6c863f28255/sv-benchmarks/c/array-patterns/array17_pattern.c[1441,1454] [2022-12-14 15:03:19,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:03:19,401 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:03:19,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:03:19 WrapperNode [2022-12-14 15:03:19,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:03:19,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:03:19,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:03:19,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:03:19,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:03:19" (1/1) ... [2022-12-14 15:03:19,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:03:19" (1/1) ... [2022-12-14 15:03:19,428 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2022-12-14 15:03:19,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:03:19,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:03:19,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:03:19,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:03:19,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:03:19" (1/1) ... [2022-12-14 15:03:19,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:03:19" (1/1) ... [2022-12-14 15:03:19,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:03:19" (1/1) ... [2022-12-14 15:03:19,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:03:19" (1/1) ... [2022-12-14 15:03:19,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:03:19" (1/1) ... [2022-12-14 15:03:19,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:03:19" (1/1) ... [2022-12-14 15:03:19,444 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:03:19" (1/1) ... [2022-12-14 15:03:19,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:03:19" (1/1) ... [2022-12-14 15:03:19,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:03:19,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:03:19,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:03:19,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:03:19,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:03:19" (1/1) ... [2022-12-14 15:03:19,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:03:19,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:03:19,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:03:19,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:03:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:03:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 15:03:19,509 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 15:03:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:03:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 15:03:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 15:03:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:03:19,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:03:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 15:03:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 15:03:19,574 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:03:19,576 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:03:19,732 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:03:19,826 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:03:19,826 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-14 15:03:19,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:03:19 BoogieIcfgContainer [2022-12-14 15:03:19,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:03:19,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:03:19,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:03:19,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:03:19,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:03:19" (1/3) ... [2022-12-14 15:03:19,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633740d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:03:19, skipping insertion in model container [2022-12-14 15:03:19,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:03:19" (2/3) ... [2022-12-14 15:03:19,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633740d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:03:19, skipping insertion in model container [2022-12-14 15:03:19,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:03:19" (3/3) ... [2022-12-14 15:03:19,835 INFO L112 eAbstractionObserver]: Analyzing ICFG array17_pattern.c [2022-12-14 15:03:19,863 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:03:19,863 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:03:19,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:03:19,912 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;@7b1bba04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:03:19,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:03:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 15:03:19,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 15:03:19,922 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:03:19,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:03:19,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:03:19,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:03:19,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2071670553, now seen corresponding path program 1 times [2022-12-14 15:03:19,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:03:19,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165786641] [2022-12-14 15:03:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:03:19,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:03:20,026 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:03:20,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38981043] [2022-12-14 15:03:20,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:03:20,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:03:20,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:03:20,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:03:20,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 15:03:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:03:20,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 15:03:20,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:03:20,106 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 15:03:20,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:03:20,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:03:20,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165786641] [2022-12-14 15:03:20,107 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:03:20,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38981043] [2022-12-14 15:03:20,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38981043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:03:20,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:03:20,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:03:20,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043323475] [2022-12-14 15:03:20,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:03:20,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 15:03:20,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:03:20,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 15:03:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:03:20,137 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 15:03:20,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:03:20,166 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2022-12-14 15:03:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 15:03:20,168 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 15:03:20,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:03:20,173 INFO L225 Difference]: With dead ends: 28 [2022-12-14 15:03:20,173 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 15:03:20,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:03:20,178 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:03:20,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:03:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 15:03:20,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-14 15:03:20,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 15:03:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2022-12-14 15:03:20,205 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 11 [2022-12-14 15:03:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:03:20,206 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2022-12-14 15:03:20,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 15:03:20,206 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2022-12-14 15:03:20,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 15:03:20,207 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:03:20,207 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:03:20,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 15:03:20,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 15:03:20,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:03:20,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:03:20,412 INFO L85 PathProgramCache]: Analyzing trace with hash 916633033, now seen corresponding path program 1 times [2022-12-14 15:03:20,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:03:20,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009977003] [2022-12-14 15:03:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:03:20,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:03:20,472 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:03:20,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433862833] [2022-12-14 15:03:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:03:20,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:03:20,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:03:20,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:03:20,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 15:03:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:03:20,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 15:03:20,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:03:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 15:03:20,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:03:20,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:03:20,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009977003] [2022-12-14 15:03:20,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:03:20,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433862833] [2022-12-14 15:03:20,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433862833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:03:20,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:03:20,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:03:20,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169609032] [2022-12-14 15:03:20,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:03:20,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:03:20,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:03:20,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:03:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:03:20,649 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 15:03:20,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:03:20,679 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2022-12-14 15:03:20,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:03:20,680 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), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2022-12-14 15:03:20,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:03:20,681 INFO L225 Difference]: With dead ends: 23 [2022-12-14 15:03:20,681 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 15:03:20,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:03:20,683 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:03:20,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 36 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:03:20,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 15:03:20,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-14 15:03:20,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 15:03:20,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2022-12-14 15:03:20,687 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 19 [2022-12-14 15:03:20,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:03:20,687 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 27 transitions. [2022-12-14 15:03:20,687 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), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 15:03:20,688 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2022-12-14 15:03:20,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 15:03:20,688 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:03:20,688 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:03:20,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 15:03:20,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:03:20,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:03:20,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:03:20,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1792495404, now seen corresponding path program 1 times [2022-12-14 15:03:20,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:03:20,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722644645] [2022-12-14 15:03:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:03:20,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:03:20,944 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:03:20,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243575632] [2022-12-14 15:03:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:03:20,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:03:20,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:03:20,949 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:03:20,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 15:03:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:03:21,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 15:03:21,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:03:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 15:03:21,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:03:21,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:03:21,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722644645] [2022-12-14 15:03:21,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:03:21,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243575632] [2022-12-14 15:03:21,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243575632] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:03:21,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:03:21,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 15:03:21,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612307804] [2022-12-14 15:03:21,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:03:21,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:03:21,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:03:21,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:03:21,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:03:21,188 INFO L87 Difference]: Start difference. First operand 20 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 15:03:21,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:03:21,253 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2022-12-14 15:03:21,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 15:03:21,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-12-14 15:03:21,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:03:21,254 INFO L225 Difference]: With dead ends: 41 [2022-12-14 15:03:21,254 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 15:03:21,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:03:21,256 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:03:21,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 39 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:03:21,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 15:03:21,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2022-12-14 15:03:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 15:03:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2022-12-14 15:03:21,262 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 22 [2022-12-14 15:03:21,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:03:21,263 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2022-12-14 15:03:21,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 15:03:21,263 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2022-12-14 15:03:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 15:03:21,264 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:03:21,264 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:03:21,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 15:03:21,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:03:21,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:03:21,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:03:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash -957199016, now seen corresponding path program 1 times [2022-12-14 15:03:21,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:03:21,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376224730] [2022-12-14 15:03:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:03:21,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:03:21,508 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:03:21,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062309907] [2022-12-14 15:03:21,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:03:21,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:03:21,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:03:21,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:03:21,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 15:03:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:03:21,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 15:03:21,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:03:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 15:03:21,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:03:21,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:03:21,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376224730] [2022-12-14 15:03:21,668 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:03:21,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062309907] [2022-12-14 15:03:21,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062309907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:03:21,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:03:21,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:03:21,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515860499] [2022-12-14 15:03:21,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:03:21,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:03:21,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:03:21,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:03:21,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:03:21,670 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 15:03:21,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:03:21,703 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2022-12-14 15:03:21,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:03:21,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-12-14 15:03:21,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:03:21,704 INFO L225 Difference]: With dead ends: 40 [2022-12-14 15:03:21,704 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 15:03:21,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:03:21,705 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:03:21,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 29 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:03:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 15:03:21,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-12-14 15:03:21,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 15:03:21,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-12-14 15:03:21,709 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 24 [2022-12-14 15:03:21,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:03:21,709 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-12-14 15:03:21,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 15:03:21,709 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-12-14 15:03:21,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 15:03:21,710 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:03:21,710 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:03:21,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 15:03:21,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:03:21,911 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:03:21,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:03:21,911 INFO L85 PathProgramCache]: Analyzing trace with hash 566593900, now seen corresponding path program 1 times [2022-12-14 15:03:21,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:03:21,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920931771] [2022-12-14 15:03:21,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:03:21,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:03:21,930 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:03:21,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617825118] [2022-12-14 15:03:21,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:03:21,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:03:21,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:03:21,932 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:03:21,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 15:03:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:03:22,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-14 15:03:22,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:03:22,255 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 15:03:22,656 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 0 case distinctions, treesize of input 225 treesize of output 214 [2022-12-14 15:03:22,757 INFO L321 Elim1Store]: treesize reduction 473, result has 7.8 percent of original size [2022-12-14 15:03:22,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 263 treesize of output 368 [2022-12-14 15:03:22,830 INFO L321 Elim1Store]: treesize reduction 107, result has 0.9 percent of original size [2022-12-14 15:03:22,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 200 treesize of output 27 [2022-12-14 15:03:23,044 INFO L321 Elim1Store]: treesize reduction 20, result has 13.0 percent of original size [2022-12-14 15:03:23,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 10 [2022-12-14 15:03:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 15:03:23,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:03:43,223 WARN L233 SmtUtils]: Spent 15.19s on a formula simplification. DAG size of input: 75 DAG size of output: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:03:43,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:03:43,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920931771] [2022-12-14 15:03:43,226 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:03:43,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617825118] [2022-12-14 15:03:43,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617825118] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:03:43,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [647940471] [2022-12-14 15:03:43,241 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 15:03:43,242 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:03:43,245 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:03:43,248 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:03:43,248 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:03:43,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:03:43,333 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 15:03:43,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 15:03:43,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:03:43,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 36 [2022-12-14 15:03:43,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:03:43,391 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 36 treesize of output 38 [2022-12-14 15:03:43,467 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 21 treesize of output 17 [2022-12-14 15:03:43,518 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 21 treesize of output 17 [2022-12-14 15:03:43,770 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 0 case distinctions, treesize of input 175 treesize of output 168 [2022-12-14 15:03:43,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:03:43,871 INFO L321 Elim1Store]: treesize reduction 67, result has 55.9 percent of original size [2022-12-14 15:03:43,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 448 treesize of output 588 [2022-12-14 15:03:44,139 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 15:03:44,723 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2022-12-14 15:03:44,724 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:03:47,302 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '721#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= (ite (or (= |ULTIMATE.start_main_~sum~0#1| 0) (= |ULTIMATE.start_main_~sum~0#1| 1)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (not (< |ULTIMATE.start_main_~row~0#1| ~ARR_SIZE~0)) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2022-12-14 15:03:47,302 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:03:47,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 15:03:47,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-12-14 15:03:47,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438526672] [2022-12-14 15:03:47,303 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 15:03:47,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 15:03:47,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:03:47,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 15:03:47,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1492, Unknown=1, NotChecked=0, Total=1722 [2022-12-14 15:03:47,305 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 19 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 15:03:47,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:03:47,970 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2022-12-14 15:03:47,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 15:03:47,971 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2022-12-14 15:03:47,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:03:47,972 INFO L225 Difference]: With dead ends: 50 [2022-12-14 15:03:47,972 INFO L226 Difference]: Without dead ends: 47 [2022-12-14 15:03:47,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=313, Invalid=2136, Unknown=1, NotChecked=0, Total=2450 [2022-12-14 15:03:47,973 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 15:03:47,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 94 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 15:03:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-14 15:03:47,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2022-12-14 15:03:47,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 15:03:47,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2022-12-14 15:03:47,981 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 25 [2022-12-14 15:03:47,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:03:47,981 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2022-12-14 15:03:47,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 15:03:47,981 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2022-12-14 15:03:47,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 15:03:47,982 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:03:47,982 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:03:47,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 15:03:48,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:03:48,184 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:03:48,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:03:48,185 INFO L85 PathProgramCache]: Analyzing trace with hash 559534040, now seen corresponding path program 2 times [2022-12-14 15:03:48,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:03:48,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475988709] [2022-12-14 15:03:48,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:03:48,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:03:48,197 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:03:48,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144106617] [2022-12-14 15:03:48,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:03:48,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:03:48,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:03:48,198 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:03:48,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 15:03:48,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 15:03:48,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:03:48,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-14 15:03:48,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:03:48,396 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 0 case distinctions, treesize of input 218 treesize of output 209 [2022-12-14 15:03:48,465 INFO L321 Elim1Store]: treesize reduction 173, result has 37.1 percent of original size [2022-12-14 15:03:48,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 258 treesize of output 427 [2022-12-14 15:03:48,647 INFO L321 Elim1Store]: treesize reduction 129, result has 12.8 percent of original size [2022-12-14 15:03:48,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 337 treesize of output 173 [2022-12-14 15:03:48,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 15:03:48,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2022-12-14 15:03:48,991 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 15:03:48,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:03:49,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 215 [2022-12-14 15:03:49,442 INFO L321 Elim1Store]: treesize reduction 139, result has 57.6 percent of original size [2022-12-14 15:03:49,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 267 treesize of output 481 [2022-12-14 15:03:49,944 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 15:03:49,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 13257 treesize of output 10815 [2022-12-14 15:05:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 15:05:12,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:05:12,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475988709] [2022-12-14 15:05:12,072 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:05:12,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144106617] [2022-12-14 15:05:12,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144106617] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:05:12,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1294652137] [2022-12-14 15:05:12,074 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 15:05:12,074 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:05:12,075 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:05:12,075 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:05:12,075 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:05:12,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:12,154 INFO L321 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2022-12-14 15:05:12,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 44 [2022-12-14 15:05:12,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:12,218 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 15:05:12,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 15:05:12,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:12,261 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 32 treesize of output 34 [2022-12-14 15:05:12,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:12,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:05:12,398 INFO L321 Elim1Store]: treesize reduction 70, result has 27.8 percent of original size [2022-12-14 15:05:12,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 277 treesize of output 280 [2022-12-14 15:05:12,463 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 21 treesize of output 17 [2022-12-14 15:05:12,552 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 0 case distinctions, treesize of input 175 treesize of output 168 [2022-12-14 15:05:12,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:12,724 INFO L321 Elim1Store]: treesize reduction 67, result has 55.9 percent of original size [2022-12-14 15:05:12,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 448 treesize of output 588 [2022-12-14 15:05:12,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:12,845 INFO L321 Elim1Store]: treesize reduction 53, result has 26.4 percent of original size [2022-12-14 15:05:12,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 816 treesize of output 561 [2022-12-14 15:05:13,379 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2022-12-14 15:05:13,380 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:05:14,970 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1076#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= (ite (or (= |ULTIMATE.start_main_~sum~0#1| 0) (= |ULTIMATE.start_main_~sum~0#1| 1)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (not (< |ULTIMATE.start_main_~row~0#1| ~ARR_SIZE~0)) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2022-12-14 15:05:14,971 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:05:14,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 15:05:14,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 25 [2022-12-14 15:05:14,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977677343] [2022-12-14 15:05:14,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 15:05:14,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 15:05:14,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:05:14,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 15:05:14,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1374, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 15:05:14,974 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 25 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 15:05:16,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:05:16,121 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2022-12-14 15:05:16,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 15:05:16,122 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 26 [2022-12-14 15:05:16,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:05:16,122 INFO L225 Difference]: With dead ends: 59 [2022-12-14 15:05:16,123 INFO L226 Difference]: Without dead ends: 56 [2022-12-14 15:05:16,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=539, Invalid=2767, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 15:05:16,124 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 57 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 15:05:16,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 98 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 15:05:16,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-14 15:05:16,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 27. [2022-12-14 15:05:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 15:05:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-12-14 15:05:16,130 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 26 [2022-12-14 15:05:16,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:05:16,131 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-12-14 15:05:16,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 15:05:16,131 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-12-14 15:05:16,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 15:05:16,131 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:16,131 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:05:16,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 15:05:16,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:05:16,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:05:16,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:16,333 INFO L85 PathProgramCache]: Analyzing trace with hash 372517715, now seen corresponding path program 3 times [2022-12-14 15:05:16,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:16,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941994927] [2022-12-14 15:05:16,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:16,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:16,344 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:05:16,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491797503] [2022-12-14 15:05:16,345 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 15:05:16,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:05:16,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:05:16,346 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:05:16,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 15:05:16,383 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 15:05:16,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:05:16,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 15:05:16,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:05:16,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 15:05:16,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:05:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 15:05:16,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:05:16,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941994927] [2022-12-14 15:05:16,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:05:16,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491797503] [2022-12-14 15:05:16,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491797503] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:05:16,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [90206968] [2022-12-14 15:05:16,444 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 15:05:16,444 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:05:16,444 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:05:16,444 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:05:16,445 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:05:16,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:16,505 INFO L321 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2022-12-14 15:05:16,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 44 [2022-12-14 15:05:16,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:16,553 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 15:05:16,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 15:05:16,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:16,585 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 36 treesize of output 38 [2022-12-14 15:05:16,626 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 21 treesize of output 17 [2022-12-14 15:05:16,664 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 21 treesize of output 17 [2022-12-14 15:05:16,849 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 0 case distinctions, treesize of input 175 treesize of output 168 [2022-12-14 15:05:16,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:16,951 INFO L321 Elim1Store]: treesize reduction 67, result has 55.9 percent of original size [2022-12-14 15:05:16,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 452 treesize of output 592 [2022-12-14 15:05:17,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:17,200 INFO L321 Elim1Store]: treesize reduction 53, result has 26.4 percent of original size [2022-12-14 15:05:17,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 944 treesize of output 667 [2022-12-14 15:05:17,759 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2022-12-14 15:05:17,760 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:05:19,517 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1426#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= (ite (or (= |ULTIMATE.start_main_~sum~0#1| 0) (= |ULTIMATE.start_main_~sum~0#1| 1)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (not (< |ULTIMATE.start_main_~row~0#1| ~ARR_SIZE~0)) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2022-12-14 15:05:19,517 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:05:19,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 15:05:19,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-14 15:05:19,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890099503] [2022-12-14 15:05:19,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 15:05:19,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 15:05:19,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:05:19,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 15:05:19,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-12-14 15:05:19,519 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 15:05:19,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:05:19,620 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2022-12-14 15:05:19,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 15:05:19,621 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 26 [2022-12-14 15:05:19,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:05:19,621 INFO L225 Difference]: With dead ends: 83 [2022-12-14 15:05:19,621 INFO L226 Difference]: Without dead ends: 62 [2022-12-14 15:05:19,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2022-12-14 15:05:19,622 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 75 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:05:19,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 60 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:05:19,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-12-14 15:05:19,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2022-12-14 15:05:19,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 15:05:19,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2022-12-14 15:05:19,633 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 26 [2022-12-14 15:05:19,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:05:19,633 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2022-12-14 15:05:19,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 15:05:19,634 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2022-12-14 15:05:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 15:05:19,634 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:19,634 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:05:19,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 15:05:19,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:05:19,836 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:05:19,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:19,837 INFO L85 PathProgramCache]: Analyzing trace with hash 153662055, now seen corresponding path program 4 times [2022-12-14 15:05:19,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:19,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113412685] [2022-12-14 15:05:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:19,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:19,868 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:05:19,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623970055] [2022-12-14 15:05:19,868 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 15:05:19,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:05:19,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:05:19,870 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:05:19,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 15:05:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:05:19,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 15:05:19,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:05:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 15:05:19,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:05:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 15:05:19,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:05:19,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113412685] [2022-12-14 15:05:19,997 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:05:19,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623970055] [2022-12-14 15:05:19,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623970055] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:05:19,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1289959206] [2022-12-14 15:05:19,999 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 15:05:19,999 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:05:19,999 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:05:19,999 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:05:19,999 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:05:20,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:20,048 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 15:05:20,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 15:05:20,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:20,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 36 [2022-12-14 15:05:20,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:20,088 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 32 treesize of output 34 [2022-12-14 15:05:20,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:20,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:05:20,234 INFO L321 Elim1Store]: treesize reduction 70, result has 27.8 percent of original size [2022-12-14 15:05:20,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 277 treesize of output 280 [2022-12-14 15:05:20,324 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 21 treesize of output 17 [2022-12-14 15:05:20,417 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 0 case distinctions, treesize of input 175 treesize of output 168 [2022-12-14 15:05:20,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:20,489 INFO L321 Elim1Store]: treesize reduction 67, result has 55.9 percent of original size [2022-12-14 15:05:20,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 295 treesize of output 472 [2022-12-14 15:05:20,609 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 15:05:20,995 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2022-12-14 15:05:20,996 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:05:22,498 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1829#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= (ite (or (= |ULTIMATE.start_main_~sum~0#1| 0) (= |ULTIMATE.start_main_~sum~0#1| 1)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (not (< |ULTIMATE.start_main_~row~0#1| ~ARR_SIZE~0)) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2022-12-14 15:05:22,498 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:05:22,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 15:05:22,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-12-14 15:05:22,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758492932] [2022-12-14 15:05:22,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 15:05:22,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 15:05:22,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:05:22,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 15:05:22,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2022-12-14 15:05:22,500 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 15:05:22,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:05:22,613 INFO L93 Difference]: Finished difference Result 80 states and 107 transitions. [2022-12-14 15:05:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 15:05:22,614 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2022-12-14 15:05:22,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:05:22,614 INFO L225 Difference]: With dead ends: 80 [2022-12-14 15:05:22,614 INFO L226 Difference]: Without dead ends: 58 [2022-12-14 15:05:22,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2022-12-14 15:05:22,615 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:05:22,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 53 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:05:22,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-12-14 15:05:22,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2022-12-14 15:05:22,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 43 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 15:05:22,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2022-12-14 15:05:22,627 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 27 [2022-12-14 15:05:22,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:05:22,628 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2022-12-14 15:05:22,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 15:05:22,628 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2022-12-14 15:05:22,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 15:05:22,629 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:22,629 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:05:22,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 15:05:22,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:05:22,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:05:22,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:22,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1627711919, now seen corresponding path program 5 times [2022-12-14 15:05:22,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:22,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071782045] [2022-12-14 15:05:22,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:22,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:22,867 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:05:22,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943951783] [2022-12-14 15:05:22,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:05:22,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:05:22,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:05:22,868 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:05:22,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 15:05:22,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 15:05:22,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:05:22,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 15:05:22,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:05:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 15:05:22,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:05:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 15:05:22,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:05:22,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071782045] [2022-12-14 15:05:22,991 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:05:22,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943951783] [2022-12-14 15:05:22,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943951783] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:05:22,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1648415625] [2022-12-14 15:05:22,993 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 15:05:22,993 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:05:22,993 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:05:22,994 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:05:22,994 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:05:23,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:23,056 INFO L321 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2022-12-14 15:05:23,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 44 [2022-12-14 15:05:23,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:23,114 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 15:05:23,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 15:05:23,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:23,156 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 36 treesize of output 38 [2022-12-14 15:05:23,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:23,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:23,277 INFO L321 Elim1Store]: treesize reduction 64, result has 9.9 percent of original size [2022-12-14 15:05:23,278 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 3 case distinctions, treesize of input 278 treesize of output 275 [2022-12-14 15:05:23,328 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 21 treesize of output 17 [2022-12-14 15:05:23,343 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 21 treesize of output 17 [2022-12-14 15:05:23,663 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 0 case distinctions, treesize of input 175 treesize of output 168 [2022-12-14 15:05:23,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:23,855 INFO L321 Elim1Store]: treesize reduction 67, result has 55.9 percent of original size [2022-12-14 15:05:23,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 452 treesize of output 592 [2022-12-14 15:05:24,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:05:24,041 INFO L321 Elim1Store]: treesize reduction 53, result has 26.4 percent of original size [2022-12-14 15:05:24,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 986 treesize of output 470 [2022-12-14 15:05:24,605 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2022-12-14 15:05:24,612 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:05:26,510 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2252#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= (ite (or (= |ULTIMATE.start_main_~sum~0#1| 0) (= |ULTIMATE.start_main_~sum~0#1| 1)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (not (< |ULTIMATE.start_main_~row~0#1| ~ARR_SIZE~0)) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2022-12-14 15:05:26,510 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:05:26,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 15:05:26,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-12-14 15:05:26,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761421973] [2022-12-14 15:05:26,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 15:05:26,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 15:05:26,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:05:26,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 15:05:26,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2022-12-14 15:05:26,512 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 15:05:26,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:05:26,577 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2022-12-14 15:05:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 15:05:26,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-12-14 15:05:26,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:05:26,578 INFO L225 Difference]: With dead ends: 72 [2022-12-14 15:05:26,579 INFO L226 Difference]: Without dead ends: 34 [2022-12-14 15:05:26,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2022-12-14 15:05:26,580 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:05:26,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 57 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:05:26,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-14 15:05:26,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-12-14 15:05:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 15:05:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-12-14 15:05:26,590 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 28 [2022-12-14 15:05:26,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:05:26,590 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-12-14 15:05:26,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 15:05:26,590 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-12-14 15:05:26,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 15:05:26,591 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:05:26,591 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:05:26,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 15:05:26,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 15:05:26,793 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:05:26,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:05:26,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1339552773, now seen corresponding path program 6 times [2022-12-14 15:05:26,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:05:26,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145286138] [2022-12-14 15:05:26,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:05:26,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:05:26,828 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:05:26,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298466333] [2022-12-14 15:05:26,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 15:05:26,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:05:26,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:05:26,831 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:05:26,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_135ff6b1-d706-4546-b458-c6c863f28255/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 15:05:27,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 15:05:27,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:05:27,949 WARN L261 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 89 conjunts are in the unsatisfiable core [2022-12-14 15:05:27,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:05:28,002 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 21 treesize of output 17 [2022-12-14 15:05:28,027 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 0 case distinctions, treesize of input 39 treesize of output 38 [2022-12-14 15:05:28,138 INFO L321 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2022-12-14 15:05:28,138 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 3 case distinctions, treesize of input 38 treesize of output 40 [2022-12-14 15:05:28,209 INFO L321 Elim1Store]: treesize reduction 78, result has 17.9 percent of original size [2022-12-14 15:05:28,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 53 [2022-12-14 15:05:39,050 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 0 case distinctions, treesize of input 298 treesize of output 279 [2022-12-14 15:05:41,204 INFO L321 Elim1Store]: treesize reduction 1404, result has 12.7 percent of original size [2022-12-14 15:05:41,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 328 treesize of output 566 [2022-12-14 15:06:51,738 WARN L233 SmtUtils]: Spent 36.60s on a formula simplification. DAG size of input: 160 DAG size of output: 159 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:07:01,328 WARN L837 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~row~0#1| 0) (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|)) (.cse7 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4))) (let ((.cse6 (select .cse3 .cse7)) (.cse88 (select .cse3 |c_ULTIMATE.start_main_~#array~0#1.offset|)) (.cse9 (* c_~ARR_SIZE~0 4))) (or (exists ((|v_ULTIMATE.start_main_~row~0#1_87| Int)) (and (<= |v_ULTIMATE.start_main_~row~0#1_87| 1) (<= c_~ARR_SIZE~0 (+ |v_ULTIMATE.start_main_~row~0#1_87| 1)) (exists ((|ULTIMATE.start_main_~index2~0#1| Int)) (and (< |ULTIMATE.start_main_~index2~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index2~0#1|) (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (let ((.cse13 (* |ULTIMATE.start_main_~index2~0#1| 4))) (and (not (= |ULTIMATE.start_main_~index1~0#1| |ULTIMATE.start_main_~index2~0#1|)) (< |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index1~0#1|) (exists ((v_DerPreprocessor_25 Int) (v_DerPreprocessor_26 Int)) (let ((.cse11 (* |ULTIMATE.start_main_~index1~0#1| .cse9)) (.cse12 (* (mod (+ c_~ARR_SIZE~0 4294967295 (* |ULTIMATE.start_main_~index2~0#1| 4294967295)) 4294967296) 4))) (let ((.cse10 (+ .cse11 .cse12 |c_ULTIMATE.start_main_~#array~0#1.offset|))) (let ((.cse8 (+ .cse11 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse13)) (.cse5 (select .cse3 .cse10))) (let ((.cse0 (store (store (store (store .cse3 .cse8 v_DerPreprocessor_25) .cse10 v_DerPreprocessor_26) .cse8 v_DerPreprocessor_25) (+ .cse11 (- 17179869184) .cse12 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse5))) (let ((.cse1 (* |v_ULTIMATE.start_main_~row~0#1_87| .cse9)) (.cse2 (select .cse0 .cse8)) (.cse4 (select .cse0 .cse7))) (and (= (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset|)) 0) (= .cse2 (select .cse3 (+ .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset| 4))) (= .cse4 .cse5) (= .cse6 .cse2) (= .cse4 0) (= (select .cse0 |c_ULTIMATE.start_main_~#array~0#1.offset|) 0)))))))) (not (= (* 4 (* c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~row~0#1_87|)) (+ .cse13 (* (* |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) 4))))))))))) (exists ((|v_ULTIMATE.start_main_~row~0#1_87| Int)) (and (exists ((|ULTIMATE.start_main_~index2~0#1| Int)) (and (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (let ((.cse24 (* |ULTIMATE.start_main_~index2~0#1| 4))) (let ((.cse14 (+ .cse24 (* (* |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) 4)))) (and (not (= (+ (* 4 (* c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~row~0#1_87|)) 4) .cse14)) (< |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index1~0#1|) (exists ((v_DerPreprocessor_25 Int) (v_DerPreprocessor_26 Int)) (let ((.cse22 (* |ULTIMATE.start_main_~index1~0#1| .cse9)) (.cse23 (* (mod (+ c_~ARR_SIZE~0 4294967295 (* |ULTIMATE.start_main_~index2~0#1| 4294967295)) 4294967296) 4))) (let ((.cse21 (+ .cse22 .cse23 |c_ULTIMATE.start_main_~#array~0#1.offset|))) (let ((.cse20 (+ .cse22 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse24)) (.cse18 (select .cse3 .cse21))) (let ((.cse15 (store (store (store (store .cse3 .cse20 v_DerPreprocessor_25) .cse21 v_DerPreprocessor_26) .cse20 v_DerPreprocessor_25) (+ .cse22 (- 17179869184) .cse23 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse18))) (let ((.cse16 (* |v_ULTIMATE.start_main_~row~0#1_87| .cse9)) (.cse19 (select .cse15 .cse20)) (.cse17 (select .cse15 .cse7))) (and (= (select .cse15 (+ .cse16 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) 0) (= .cse17 .cse18) (= .cse19 (select .cse3 (+ .cse16 |c_ULTIMATE.start_main_~#array~0#1.offset|))) (= .cse6 .cse19) (= .cse17 0) (= (select .cse15 |c_ULTIMATE.start_main_~#array~0#1.offset|) 0)))))))) (not (= .cse14 0)))))) (< |ULTIMATE.start_main_~index2~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index2~0#1|))) (<= |v_ULTIMATE.start_main_~row~0#1_87| 1) (<= c_~ARR_SIZE~0 (+ |v_ULTIMATE.start_main_~row~0#1_87| 1)))) (exists ((|v_ULTIMATE.start_main_~row~0#1_87| Int)) (and (exists ((|ULTIMATE.start_main_~index2~0#1| Int)) (and (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (let ((.cse31 (* |ULTIMATE.start_main_~index1~0#1| .cse9)) (.cse32 (* (mod (+ c_~ARR_SIZE~0 4294967295 (* |ULTIMATE.start_main_~index2~0#1| 4294967295)) 4294967296) 4))) (let ((.cse34 (* |ULTIMATE.start_main_~index2~0#1| 4)) (.cse30 (+ .cse31 .cse32 |c_ULTIMATE.start_main_~#array~0#1.offset|))) (let ((.cse33 (select .cse3 .cse30)) (.cse25 (+ .cse34 (* (* |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) 4)))) (and (not (= 4 .cse25)) (< |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index1~0#1|) (exists ((v_DerPreprocessor_25 Int) (v_DerPreprocessor_26 Int)) (let ((.cse29 (+ .cse31 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse34))) (let ((.cse26 (store (store (store (store .cse3 .cse29 v_DerPreprocessor_25) .cse30 v_DerPreprocessor_26) .cse29 v_DerPreprocessor_25) (+ .cse31 (- 17179869184) .cse32 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse33))) (let ((.cse27 (* |v_ULTIMATE.start_main_~row~0#1_87| .cse9)) (.cse28 (select .cse26 .cse29))) (and (= (select .cse26 (+ .cse27 |c_ULTIMATE.start_main_~#array~0#1.offset|)) 0) (= .cse28 (select .cse3 (+ .cse27 |c_ULTIMATE.start_main_~#array~0#1.offset| 4))) (= (+ .cse28 1) 0) (= (select .cse26 .cse7) 0) (= (select .cse26 |c_ULTIMATE.start_main_~#array~0#1.offset|) 0)))))) (= .cse33 1) (not (= .cse25 0)) (not (= (* 4 (* c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~row~0#1_87|)) .cse25))))))) (< |ULTIMATE.start_main_~index2~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index2~0#1|))) (<= |v_ULTIMATE.start_main_~row~0#1_87| 1) (<= c_~ARR_SIZE~0 (+ |v_ULTIMATE.start_main_~row~0#1_87| 1)))) (exists ((|v_ULTIMATE.start_main_~row~0#1_87| Int)) (and (<= |v_ULTIMATE.start_main_~row~0#1_87| 1) (exists ((|ULTIMATE.start_main_~index2~0#1| Int)) (and (< |ULTIMATE.start_main_~index2~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index2~0#1|) (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (let ((.cse43 (* |ULTIMATE.start_main_~index2~0#1| 4))) (and (exists ((v_DerPreprocessor_25 Int) (v_DerPreprocessor_26 Int)) (let ((.cse41 (* |ULTIMATE.start_main_~index1~0#1| .cse9)) (.cse42 (* (mod (+ c_~ARR_SIZE~0 4294967295 (* |ULTIMATE.start_main_~index2~0#1| 4294967295)) 4294967296) 4))) (let ((.cse40 (+ .cse41 .cse42 |c_ULTIMATE.start_main_~#array~0#1.offset|))) (let ((.cse39 (+ .cse41 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse43)) (.cse38 (select .cse3 .cse40))) (let ((.cse35 (store (store (store (store .cse3 .cse39 v_DerPreprocessor_25) .cse40 v_DerPreprocessor_26) .cse39 v_DerPreprocessor_25) (+ .cse41 (- 17179869184) .cse42 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse38))) (let ((.cse36 (* |v_ULTIMATE.start_main_~row~0#1_87| .cse9)) (.cse37 (select .cse35 .cse7))) (and (= (select .cse35 (+ .cse36 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) 0) (= (select .cse35 (+ .cse36 |c_ULTIMATE.start_main_~#array~0#1.offset|)) 0) (= .cse37 .cse38) (= .cse6 (select .cse35 .cse39)) (= .cse37 0) (= (select .cse35 |c_ULTIMATE.start_main_~#array~0#1.offset|) 0)))))))) (not (= |ULTIMATE.start_main_~index1~0#1| |ULTIMATE.start_main_~index2~0#1|)) (< |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index1~0#1|) (not (= (* 4 (* c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~row~0#1_87|)) (+ .cse43 (* (* |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) 4))))))))) (<= c_~ARR_SIZE~0 (+ |v_ULTIMATE.start_main_~row~0#1_87| 1)))) (exists ((|v_ULTIMATE.start_main_~row~0#1_87| Int)) (and (exists ((|ULTIMATE.start_main_~index2~0#1| Int)) (and (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (let ((.cse54 (* |ULTIMATE.start_main_~index2~0#1| 4))) (let ((.cse44 (* 4 (* c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~row~0#1_87|))) (.cse45 (+ .cse54 (* (* |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) 4)))) (and (not (= (+ .cse44 4) .cse45)) (exists ((v_DerPreprocessor_25 Int) (v_DerPreprocessor_26 Int)) (let ((.cse52 (* |ULTIMATE.start_main_~index1~0#1| .cse9)) (.cse53 (* (mod (+ c_~ARR_SIZE~0 4294967295 (* |ULTIMATE.start_main_~index2~0#1| 4294967295)) 4294967296) 4))) (let ((.cse51 (+ .cse52 .cse53 |c_ULTIMATE.start_main_~#array~0#1.offset|))) (let ((.cse50 (+ .cse52 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse54)) (.cse49 (select .cse3 .cse51))) (let ((.cse46 (store (store (store (store .cse3 .cse50 v_DerPreprocessor_25) .cse51 v_DerPreprocessor_26) .cse50 v_DerPreprocessor_25) (+ .cse52 (- 17179869184) .cse53 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse49))) (let ((.cse47 (* |v_ULTIMATE.start_main_~row~0#1_87| .cse9)) (.cse48 (select .cse46 .cse7))) (and (= (select .cse46 (+ .cse47 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) 0) (= (select .cse46 (+ .cse47 |c_ULTIMATE.start_main_~#array~0#1.offset|)) 0) (= .cse48 .cse49) (= .cse6 (select .cse46 .cse50)) (= .cse48 0) (= (select .cse46 |c_ULTIMATE.start_main_~#array~0#1.offset|) 0)))))))) (< |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index1~0#1|) (not (= .cse45 0)) (not (= .cse44 .cse45)))))) (< |ULTIMATE.start_main_~index2~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index2~0#1|))) (<= |v_ULTIMATE.start_main_~row~0#1_87| 1) (<= c_~ARR_SIZE~0 (+ |v_ULTIMATE.start_main_~row~0#1_87| 1)))) (exists ((|v_ULTIMATE.start_main_~row~0#1_87| Int)) (and (exists ((|ULTIMATE.start_main_~index2~0#1| Int)) (and (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (and (not (= |ULTIMATE.start_main_~index1~0#1| |ULTIMATE.start_main_~index2~0#1|)) (< |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index1~0#1|) (exists ((v_DerPreprocessor_25 Int) (v_DerPreprocessor_26 Int)) (let ((.cse62 (* |ULTIMATE.start_main_~index1~0#1| .cse9)) (.cse63 (* (mod (+ c_~ARR_SIZE~0 4294967295 (* |ULTIMATE.start_main_~index2~0#1| 4294967295)) 4294967296) 4))) (let ((.cse61 (+ .cse62 .cse63 |c_ULTIMATE.start_main_~#array~0#1.offset|))) (let ((.cse60 (+ .cse62 |c_ULTIMATE.start_main_~#array~0#1.offset| (* |ULTIMATE.start_main_~index2~0#1| 4))) (.cse58 (select .cse3 .cse61))) (let ((.cse55 (store (store (store (store .cse3 .cse60 v_DerPreprocessor_25) .cse61 v_DerPreprocessor_26) .cse60 v_DerPreprocessor_25) (+ .cse62 (- 17179869184) .cse63 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse58))) (let ((.cse56 (* |v_ULTIMATE.start_main_~row~0#1_87| .cse9)) (.cse59 (select .cse55 .cse60)) (.cse57 (select .cse55 .cse7))) (and (= (select .cse55 (+ .cse56 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) 0) (= .cse57 .cse58) (= .cse59 (select .cse3 (+ .cse56 |c_ULTIMATE.start_main_~#array~0#1.offset|))) (= .cse6 .cse59) (= .cse57 0) (= (select .cse55 |c_ULTIMATE.start_main_~#array~0#1.offset|) 0)))))))))) (< |ULTIMATE.start_main_~index2~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index2~0#1|))) (<= |v_ULTIMATE.start_main_~row~0#1_87| 1) (<= c_~ARR_SIZE~0 (+ |v_ULTIMATE.start_main_~row~0#1_87| 1)))) (exists ((|v_ULTIMATE.start_main_~row~0#1_87| Int)) (and (exists ((|ULTIMATE.start_main_~index2~0#1| Int)) (and (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (let ((.cse74 (* |ULTIMATE.start_main_~index2~0#1| 4))) (let ((.cse64 (+ .cse74 (* (* |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) 4)))) (and (not (= (+ (* 4 (* c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~row~0#1_87|)) 4) .cse64)) (not (= 4 .cse64)) (< |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index1~0#1|) (exists ((v_DerPreprocessor_25 Int) (v_DerPreprocessor_26 Int)) (let ((.cse72 (* |ULTIMATE.start_main_~index1~0#1| .cse9)) (.cse73 (* (mod (+ c_~ARR_SIZE~0 4294967295 (* |ULTIMATE.start_main_~index2~0#1| 4294967295)) 4294967296) 4))) (let ((.cse71 (+ .cse72 .cse73 |c_ULTIMATE.start_main_~#array~0#1.offset|))) (let ((.cse70 (+ .cse72 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse74)) (.cse69 (select .cse3 .cse71))) (let ((.cse65 (store (store (store (store .cse3 .cse70 v_DerPreprocessor_25) .cse71 v_DerPreprocessor_26) .cse70 v_DerPreprocessor_25) (+ .cse72 (- 17179869184) .cse73 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse69)) (.cse66 (* |v_ULTIMATE.start_main_~row~0#1_87| .cse9))) (let ((.cse67 (+ .cse66 |c_ULTIMATE.start_main_~#array~0#1.offset|)) (.cse68 (select .cse65 .cse7))) (and (= (select .cse65 (+ .cse66 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) 0) (= (select .cse65 .cse67) 0) (= .cse68 .cse69) (= (select .cse65 .cse70) (select .cse3 .cse67)) (= .cse68 0) (= (select .cse65 |c_ULTIMATE.start_main_~#array~0#1.offset|) 0)))))))) (not (= .cse64 0)))))) (< |ULTIMATE.start_main_~index2~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index2~0#1|))) (<= |v_ULTIMATE.start_main_~row~0#1_87| 1) (<= c_~ARR_SIZE~0 (+ |v_ULTIMATE.start_main_~row~0#1_87| 1)))) (exists ((|v_ULTIMATE.start_main_~row~0#1_87| Int)) (and (exists ((|ULTIMATE.start_main_~index2~0#1| Int)) (and (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (let ((.cse75 (* |ULTIMATE.start_main_~index2~0#1| 4))) (and (not (= 4 (+ .cse75 (* (* |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) 4)))) (not (= |ULTIMATE.start_main_~index1~0#1| |ULTIMATE.start_main_~index2~0#1|)) (< |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index1~0#1|) (exists ((v_DerPreprocessor_25 Int) (v_DerPreprocessor_26 Int)) (let ((.cse84 (* |ULTIMATE.start_main_~index1~0#1| .cse9)) (.cse85 (* (mod (+ c_~ARR_SIZE~0 4294967295 (* |ULTIMATE.start_main_~index2~0#1| 4294967295)) 4294967296) 4))) (let ((.cse83 (+ .cse84 .cse85 |c_ULTIMATE.start_main_~#array~0#1.offset|))) (let ((.cse82 (+ .cse84 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse75)) (.cse80 (select .cse3 .cse83))) (let ((.cse76 (store (store (store (store .cse3 .cse82 v_DerPreprocessor_25) .cse83 v_DerPreprocessor_26) .cse82 v_DerPreprocessor_25) (+ .cse84 (- 17179869184) .cse85 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse80)) (.cse81 (* |v_ULTIMATE.start_main_~row~0#1_87| .cse9))) (let ((.cse77 (+ .cse81 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) (.cse78 (select .cse76 .cse82)) (.cse79 (select .cse76 .cse7))) (and (= (select .cse76 .cse77) 0) (= .cse78 (select .cse3 .cse77)) (= .cse79 .cse80) (= .cse78 (select .cse3 (+ .cse81 |c_ULTIMATE.start_main_~#array~0#1.offset|))) (= .cse79 0) (= (select .cse76 |c_ULTIMATE.start_main_~#array~0#1.offset|) 0))))))))))) (< |ULTIMATE.start_main_~index2~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index2~0#1|))) (<= |v_ULTIMATE.start_main_~row~0#1_87| 1) (<= c_~ARR_SIZE~0 (+ |v_ULTIMATE.start_main_~row~0#1_87| 1)))) (exists ((|v_ULTIMATE.start_main_~row~0#1_87| Int)) (and (<= |v_ULTIMATE.start_main_~row~0#1_87| 1) (<= c_~ARR_SIZE~0 (+ |v_ULTIMATE.start_main_~row~0#1_87| 1)) (exists ((|ULTIMATE.start_main_~index2~0#1| Int)) (and (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (let ((.cse96 (* |ULTIMATE.start_main_~index2~0#1| 4))) (and (exists ((v_DerPreprocessor_25 Int) (v_DerPreprocessor_26 Int)) (let ((.cse94 (* |ULTIMATE.start_main_~index1~0#1| .cse9)) (.cse95 (* (mod (+ c_~ARR_SIZE~0 4294967295 (* |ULTIMATE.start_main_~index2~0#1| 4294967295)) 4294967296) 4))) (let ((.cse93 (+ .cse94 .cse95 |c_ULTIMATE.start_main_~#array~0#1.offset|))) (let ((.cse92 (+ .cse94 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse96)) (.cse91 (select .cse3 .cse93))) (let ((.cse86 (store (store (store (store .cse3 .cse92 v_DerPreprocessor_25) .cse93 v_DerPreprocessor_26) .cse92 v_DerPreprocessor_25) (+ .cse94 (- 17179869184) .cse95 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse91))) (let ((.cse89 (select .cse86 .cse92)) (.cse87 (* |v_ULTIMATE.start_main_~row~0#1_87| .cse9)) (.cse90 (select .cse86 .cse7))) (and (= (select .cse86 (+ .cse87 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) 0) (= .cse88 .cse89) (= .cse90 .cse91) (= .cse89 (select .cse3 (+ .cse87 |c_ULTIMATE.start_main_~#array~0#1.offset|))) (= .cse90 0) (= (select .cse86 |c_ULTIMATE.start_main_~#array~0#1.offset|) 0)))))))) (not (= 4 (+ .cse96 (* (* |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) 4)))) (not (= |ULTIMATE.start_main_~index1~0#1| |ULTIMATE.start_main_~index2~0#1|)) (< |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index1~0#1|)))) (< |ULTIMATE.start_main_~index2~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index2~0#1|))))) (exists ((|v_ULTIMATE.start_main_~row~0#1_87| Int)) (and (<= |v_ULTIMATE.start_main_~row~0#1_87| 1) (<= c_~ARR_SIZE~0 (+ |v_ULTIMATE.start_main_~row~0#1_87| 1)) (exists ((|ULTIMATE.start_main_~index2~0#1| Int)) (and (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (let ((.cse104 (* |ULTIMATE.start_main_~index1~0#1| .cse9)) (.cse105 (* (mod (+ c_~ARR_SIZE~0 4294967295 (* |ULTIMATE.start_main_~index2~0#1| 4294967295)) 4294967296) 4))) (let ((.cse107 (* |ULTIMATE.start_main_~index2~0#1| 4)) (.cse103 (+ .cse104 .cse105 |c_ULTIMATE.start_main_~#array~0#1.offset|))) (let ((.cse106 (select .cse3 .cse103)) (.cse97 (* 4 (* c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~row~0#1_87|))) (.cse98 (+ .cse107 (* (* |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) 4)))) (and (not (= (+ .cse97 4) .cse98)) (not (= 4 .cse98)) (< |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) (exists ((v_DerPreprocessor_25 Int) (v_DerPreprocessor_26 Int)) (let ((.cse102 (+ .cse104 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse107))) (let ((.cse99 (store (store (store (store .cse3 .cse102 v_DerPreprocessor_25) .cse103 v_DerPreprocessor_26) .cse102 v_DerPreprocessor_25) (+ .cse104 (- 17179869184) .cse105 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse106))) (let ((.cse100 (* |v_ULTIMATE.start_main_~row~0#1_87| .cse9)) (.cse101 (select .cse99 .cse102))) (and (= (select .cse99 (+ .cse100 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) 0) (= (select .cse99 (+ .cse100 |c_ULTIMATE.start_main_~#array~0#1.offset|)) 0) (= .cse88 .cse101) (= (+ .cse101 1) 0) (= (select .cse99 .cse7) 0)))))) (<= 0 |ULTIMATE.start_main_~index1~0#1|) (= .cse106 1) (not (= .cse97 .cse98))))))) (< |ULTIMATE.start_main_~index2~0#1| c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index2~0#1|)))))))) (= |c_ULTIMATE.start_main_~sum~0#1| 0)) is different from false [2022-12-14 15:07:33,018 WARN L233 SmtUtils]: Spent 18.76s on a formula simplification that was a NOOP. DAG size: 163 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:08:26,749 WARN L233 SmtUtils]: Spent 41.85s on a formula simplification. DAG size of input: 166 DAG size of output: 144 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:08:52,886 WARN L233 SmtUtils]: Spent 11.41s on a formula simplification that was a NOOP. DAG size: 145 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:09:17,313 WARN L233 SmtUtils]: Spent 13.39s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:09:42,325 WARN L233 SmtUtils]: Spent 12.33s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:10:06,345 WARN L233 SmtUtils]: Spent 12.23s on a formula simplification that was a NOOP. DAG size: 147 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:10:06,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4407 treesize of output 4201