./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array3_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array3_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur --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 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 --- 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-38b53e6 [2022-11-26 00:42:55,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:42:55,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:42:55,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:42:55,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:42:55,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:42:55,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:42:55,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:42:55,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:42:55,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:42:55,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:42:55,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:42:55,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:42:55,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:42:55,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:42:55,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:42:55,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:42:55,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:42:55,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:42:55,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:42:55,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:42:55,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:42:55,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:42:55,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:42:55,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:42:55,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:42:55,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:42:55,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:42:55,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:42:55,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:42:55,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:42:55,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:42:55,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:42:55,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:42:55,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:42:55,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:42:55,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:42:55,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:42:55,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:42:55,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:42:55,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:42:55,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:42:55,644 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:42:55,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:42:55,645 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:42:55,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:42:55,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:42:55,647 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:42:55,647 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:42:55,648 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:42:55,648 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:42:55,648 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:42:55,649 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:42:55,650 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:42:55,650 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:42:55,650 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:42:55,651 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:42:55,651 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:42:55,651 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:42:55,651 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:42:55,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:42:55,653 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:42:55,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:42:55,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:42:55,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:42:55,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:42:55,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:42:55,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:42:55,655 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:42:55,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:42:55,655 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:42:55,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:42:55,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:42:55,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:42:55,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:42:55,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:42:55,657 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:42:55,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:42:55,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:42:55,659 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:42:55,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:42:55,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:42:55,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:42:55,660 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_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 [2022-11-26 00:42:56,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:42:56,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:42:56,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:42:56,098 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:42:56,099 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:42:56,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/array-patterns/array3_pattern.c [2022-11-26 00:42:59,599 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:42:59,838 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:42:59,839 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/sv-benchmarks/c/array-patterns/array3_pattern.c [2022-11-26 00:42:59,848 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/data/8e60dbd5f/6f9dcb5ab11f4b5bb1c249174094c3f2/FLAGcc274bed6 [2022-11-26 00:42:59,872 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/data/8e60dbd5f/6f9dcb5ab11f4b5bb1c249174094c3f2 [2022-11-26 00:42:59,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:42:59,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:42:59,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:42:59,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:42:59,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:42:59,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:42:59" (1/1) ... [2022-11-26 00:42:59,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed56557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:59, skipping insertion in model container [2022-11-26 00:42:59,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:42:59" (1/1) ... [2022-11-26 00:42:59,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:42:59,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:43:00,153 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_fe07363d-2830-4589-8abb-bac728d570ed/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2022-11-26 00:43:00,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:43:00,203 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:43:00,219 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_fe07363d-2830-4589-8abb-bac728d570ed/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2022-11-26 00:43:00,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:43:00,253 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:43:00,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:00 WrapperNode [2022-11-26 00:43:00,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:43:00,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:43:00,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:43:00,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:43:00,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:00" (1/1) ... [2022-11-26 00:43:00,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:00" (1/1) ... [2022-11-26 00:43:00,310 INFO L138 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2022-11-26 00:43:00,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:43:00,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:43:00,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:43:00,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:43:00,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:00" (1/1) ... [2022-11-26 00:43:00,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:00" (1/1) ... [2022-11-26 00:43:00,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:00" (1/1) ... [2022-11-26 00:43:00,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:00" (1/1) ... [2022-11-26 00:43:00,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:00" (1/1) ... [2022-11-26 00:43:00,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:00" (1/1) ... [2022-11-26 00:43:00,355 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:00" (1/1) ... [2022-11-26 00:43:00,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:00" (1/1) ... [2022-11-26 00:43:00,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:43:00,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:43:00,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:43:00,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:43:00,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:00" (1/1) ... [2022-11-26 00:43:00,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:43:00,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:43:00,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:43:00,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:43:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:43:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-26 00:43:00,453 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-26 00:43:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:43:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:43:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:43:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure square [2022-11-26 00:43:00,454 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2022-11-26 00:43:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:43:00,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:43:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:43:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:43:00,539 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:43:00,542 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:43:00,891 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:43:00,950 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:43:00,950 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-26 00:43:00,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:43:00 BoogieIcfgContainer [2022-11-26 00:43:00,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:43:00,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:43:00,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:43:00,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:43:00,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:42:59" (1/3) ... [2022-11-26 00:43:00,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7421a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:43:00, skipping insertion in model container [2022-11-26 00:43:00,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:00" (2/3) ... [2022-11-26 00:43:00,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7421a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:43:00, skipping insertion in model container [2022-11-26 00:43:00,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:43:00" (3/3) ... [2022-11-26 00:43:00,964 INFO L112 eAbstractionObserver]: Analyzing ICFG array3_pattern.c [2022-11-26 00:43:00,988 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:43:00,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:43:01,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:43:01,091 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;@5105199c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:43:01,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:43:01,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-26 00:43:01,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:43:01,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:01,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:01,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:43:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:01,139 INFO L85 PathProgramCache]: Analyzing trace with hash 168211832, now seen corresponding path program 1 times [2022-11-26 00:43:01,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:01,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652456089] [2022-11-26 00:43:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:01,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:01,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:01,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652456089] [2022-11-26 00:43:01,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652456089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:01,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:01,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:43:01,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393000718] [2022-11-26 00:43:01,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:01,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 00:43:01,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:01,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 00:43:01,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:43:01,512 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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) [2022-11-26 00:43:01,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:01,604 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2022-11-26 00:43:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 00:43:01,608 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 [2022-11-26 00:43:01,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:01,627 INFO L225 Difference]: With dead ends: 36 [2022-11-26 00:43:01,627 INFO L226 Difference]: Without dead ends: 21 [2022-11-26 00:43:01,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:43:01,636 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:01,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:43:01,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-26 00:43:01,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-26 00:43:01,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-26 00:43:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-26 00:43:01,689 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2022-11-26 00:43:01,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:01,692 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-26 00:43:01,694 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) [2022-11-26 00:43:01,696 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-26 00:43:01,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:43:01,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:01,700 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:01,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:43:01,701 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:43:01,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:01,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1604099434, now seen corresponding path program 1 times [2022-11-26 00:43:01,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:01,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584096636] [2022-11-26 00:43:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:01,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:01,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:43:01,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121577959] [2022-11-26 00:43:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:01,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:43:01,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:43:01,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:43:01,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:43:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:01,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-26 00:43:01,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:43:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:43:02,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:43:02,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:02,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584096636] [2022-11-26 00:43:02,059 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:43:02,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121577959] [2022-11-26 00:43:02,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121577959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:02,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:02,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:43:02,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643021565] [2022-11-26 00:43:02,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:02,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:43:02,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:02,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:43:02,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:43:02,065 INFO L87 Difference]: Start difference. First operand 21 states and 25 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:43:02,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:02,115 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-11-26 00:43:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:43:02,116 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-26 00:43:02,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:02,117 INFO L225 Difference]: With dead ends: 27 [2022-11-26 00:43:02,117 INFO L226 Difference]: Without dead ends: 24 [2022-11-26 00:43:02,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:43:02,120 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:02,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:43:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-26 00:43:02,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-11-26 00:43:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-26 00:43:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-26 00:43:02,130 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2022-11-26 00:43:02,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:02,131 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-26 00:43:02,131 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:43:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-26 00:43:02,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-26 00:43:02,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:02,133 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:02,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:43:02,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:43:02,341 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:43:02,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:02,342 INFO L85 PathProgramCache]: Analyzing trace with hash -874793495, now seen corresponding path program 1 times [2022-11-26 00:43:02,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:02,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741610078] [2022-11-26 00:43:02,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:02,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:02,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:43:02,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934033076] [2022-11-26 00:43:02,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:02,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:43:02,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:43:02,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:43:02,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:43:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:02,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:43:02,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:43:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:43:02,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:43:02,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:02,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741610078] [2022-11-26 00:43:02,664 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:43:02,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934033076] [2022-11-26 00:43:02,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934033076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:02,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:02,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:43:02,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213997224] [2022-11-26 00:43:02,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:02,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:43:02,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:02,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:43:02,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:43:02,675 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-26 00:43:02,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:02,810 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-11-26 00:43:02,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:43:02,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 25 [2022-11-26 00:43:02,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:02,813 INFO L225 Difference]: With dead ends: 45 [2022-11-26 00:43:02,813 INFO L226 Difference]: Without dead ends: 27 [2022-11-26 00:43:02,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:43:02,815 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:02,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 50 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:43:02,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-26 00:43:02,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-26 00:43:02,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-26 00:43:02,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-26 00:43:02,829 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 25 [2022-11-26 00:43:02,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:02,830 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-26 00:43:02,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-26 00:43:02,830 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-26 00:43:02,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:43:02,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:02,832 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:02,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:43:03,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-26 00:43:03,039 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:43:03,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:03,040 INFO L85 PathProgramCache]: Analyzing trace with hash -578077241, now seen corresponding path program 1 times [2022-11-26 00:43:03,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:03,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427060698] [2022-11-26 00:43:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:03,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:03,099 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:43:03,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993887353] [2022-11-26 00:43:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:03,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:43:03,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:43:03,102 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:43:03,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:43:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:03,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-26 00:43:03,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:43:03,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-26 00:43:03,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:03,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-26 00:43:03,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-26 00:43:03,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-26 00:43:03,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-26 00:43:04,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:04,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 162 [2022-11-26 00:43:04,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 154 [2022-11-26 00:43:04,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:04,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:04,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 197 [2022-11-26 00:43:04,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:04,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2022-11-26 00:43:04,236 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:43:05,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:05,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:05,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 17 [2022-11-26 00:43:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:05,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:43:24,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:24,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427060698] [2022-11-26 00:43:24,835 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:43:24,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993887353] [2022-11-26 00:43:24,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993887353] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:43:24,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1465269077] [2022-11-26 00:43:24,869 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-26 00:43:24,869 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:43:24,873 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:43:24,878 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:43:24,879 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:43:24,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:24,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,100 INFO L321 Elim1Store]: treesize reduction 80, result has 29.8 percent of original size [2022-11-26 00:43:25,101 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 3 case distinctions, treesize of input 33 treesize of output 57 [2022-11-26 00:43:25,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,242 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-26 00:43:25,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-26 00:43:25,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-26 00:43:25,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:25,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:25,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:25,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:25,597 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-26 00:43:25,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 361 treesize of output 359 [2022-11-26 00:43:26,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:26,081 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-26 00:43:26,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-11-26 00:43:26,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:26,668 INFO L321 Elim1Store]: treesize reduction 176, result has 51.6 percent of original size [2022-11-26 00:43:26,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 493 treesize of output 628 [2022-11-26 00:43:26,864 INFO L217 Elim1Store]: Index analysis took 135 ms [2022-11-26 00:43:27,071 INFO L321 Elim1Store]: treesize reduction 37, result has 17.8 percent of original size [2022-11-26 00:43:27,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 194 treesize of output 256 [2022-11-26 00:43:27,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-11-26 00:43:27,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,173 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:43:27,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 114 [2022-11-26 00:43:27,263 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:43:27,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:27,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 893 treesize of output 1542 [2022-11-26 00:43:27,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:27,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:27,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 627 treesize of output 567 [2022-11-26 00:43:27,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:27,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:27,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:27,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:27,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 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 783 treesize of output 2748 [2022-11-26 00:43:32,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:32,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 43 [2022-11-26 00:43:32,602 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:43:34,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:43:34,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:34,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 67 [2022-11-26 00:43:34,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:43:34,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 43 [2022-11-26 00:43:34,342 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:43:36,398 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-26 00:43:36,422 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 12 for LOIs [2022-11-26 00:43:36,424 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:44:32,530 WARN L233 SmtUtils]: Spent 37.99s on a formula simplification. DAG size of input: 928 DAG size of output: 415 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:45:28,135 WARN L233 SmtUtils]: Spent 44.88s on a formula simplification. DAG size of input: 925 DAG size of output: 411 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:45:31,506 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '565#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= (ite (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~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 [2022-11-26 00:45:31,506 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:45:31,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:45:31,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-11-26 00:45:31,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031989548] [2022-11-26 00:45:31,506 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-26 00:45:31,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-26 00:45:31,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:45:31,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-26 00:45:31,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2220, Unknown=14, NotChecked=0, Total=2450 [2022-11-26 00:45:31,509 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-26 00:45:36,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:45:36,552 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2022-11-26 00:45:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-26 00:45:36,553 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2022-11-26 00:45:36,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:45:36,554 INFO L225 Difference]: With dead ends: 60 [2022-11-26 00:45:36,554 INFO L226 Difference]: Without dead ends: 33 [2022-11-26 00:45:36,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 138.7s TimeCoverageRelationStatistics Valid=444, Invalid=3702, Unknown=14, NotChecked=0, Total=4160 [2022-11-26 00:45:36,557 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 55 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:45:36,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 95 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 00:45:36,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-26 00:45:36,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2022-11-26 00:45:36,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-26 00:45:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-11-26 00:45:36,567 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 26 [2022-11-26 00:45:36,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:45:36,568 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-11-26 00:45:36,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-26 00:45:36,568 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-11-26 00:45:36,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-26 00:45:36,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:45:36,569 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:45:36,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:45:36,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:45:36,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:45:36,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:45:36,776 INFO L85 PathProgramCache]: Analyzing trace with hash 30192041, now seen corresponding path program 2 times [2022-11-26 00:45:36,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:45:36,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098027359] [2022-11-26 00:45:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:45:36,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:45:36,826 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:45:36,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977488627] [2022-11-26 00:45:36,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:45:36,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:45:36,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:45:36,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:45:36,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:45:36,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-26 00:45:36,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:45:36,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-26 00:45:36,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:45:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:45:37,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:45:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-26 00:45:37,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:45:37,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098027359] [2022-11-26 00:45:37,191 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:45:37,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977488627] [2022-11-26 00:45:37,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977488627] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:45:37,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [182593536] [2022-11-26 00:45:37,193 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-26 00:45:37,194 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:45:37,194 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:45:37,194 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:45:37,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:45:37,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:37,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:37,391 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-26 00:45:37,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-26 00:45:37,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:37,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:37,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-26 00:45:37,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:37,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:37,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-26 00:45:37,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:37,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:37,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:37,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:37,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:37,701 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-26 00:45:37,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 361 treesize of output 359 [2022-11-26 00:45:37,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:37,848 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-26 00:45:37,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-11-26 00:45:37,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:38,499 INFO L321 Elim1Store]: treesize reduction 176, result has 51.6 percent of original size [2022-11-26 00:45:38,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 493 treesize of output 628 [2022-11-26 00:45:38,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:38,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:38,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:38,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 346 treesize of output 598 [2022-11-26 00:45:38,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:38,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:38,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 141 [2022-11-26 00:45:38,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:38,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:38,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 130 [2022-11-26 00:45:39,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:39,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:39,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:39,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:39,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:39,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:39,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 311 treesize of output 565 [2022-11-26 00:45:39,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:39,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:39,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 121 [2022-11-26 00:45:39,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:39,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 35 [2022-11-26 00:45:39,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:45:39,202 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:45:42,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:42,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 28 [2022-11-26 00:45:42,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:42,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 28 [2022-11-26 00:45:44,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:44,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 28 [2022-11-26 00:45:44,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:45:44,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 28 [2022-11-26 00:45:45,991 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-26 00:45:46,009 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 12 for LOIs [2022-11-26 00:45:46,011 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:46:12,981 WARN L233 SmtUtils]: Spent 23.97s on a formula simplification. DAG size of input: 482 DAG size of output: 198 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:46:37,785 WARN L233 SmtUtils]: Spent 22.72s on a formula simplification. DAG size of input: 479 DAG size of output: 194 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:46:39,227 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '908#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= (ite (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~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 [2022-11-26 00:46:39,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:46:39,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:46:39,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-26 00:46:39,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537765881] [2022-11-26 00:46:39,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:46:39,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:46:39,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:46:39,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:46:39,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=638, Unknown=1, NotChecked=0, Total=756 [2022-11-26 00:46:39,230 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-26 00:46:39,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:46:39,487 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2022-11-26 00:46:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:46:39,488 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 27 [2022-11-26 00:46:39,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:46:39,489 INFO L225 Difference]: With dead ends: 38 [2022-11-26 00:46:39,489 INFO L226 Difference]: Without dead ends: 35 [2022-11-26 00:46:39,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 53.4s TimeCoverageRelationStatistics Valid=146, Invalid=845, Unknown=1, NotChecked=0, Total=992 [2022-11-26 00:46:39,491 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:46:39,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 37 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:46:39,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-26 00:46:39,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2022-11-26 00:46:39,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-26 00:46:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-11-26 00:46:39,499 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 27 [2022-11-26 00:46:39,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:46:39,500 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-11-26 00:46:39,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-26 00:46:39,500 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-11-26 00:46:39,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-26 00:46:39,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:39,501 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:46:39,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-26 00:46:39,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:46:39,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:46:39,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:39,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2056583306, now seen corresponding path program 3 times [2022-11-26 00:46:39,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:46:39,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36779202] [2022-11-26 00:46:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:39,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:46:39,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:46:39,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314524477] [2022-11-26 00:46:39,749 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:46:39,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:46:39,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:46:39,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:46:39,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:46:40,077 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:46:40,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:46:40,080 WARN L261 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 123 conjunts are in the unsatisfiable core [2022-11-26 00:46:40,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:46:40,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-26 00:46:40,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:40,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-26 00:46:40,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-26 00:46:40,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-26 00:46:40,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-26 00:46:40,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:40,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:40,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-11-26 00:46:41,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:41,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 176 [2022-11-26 00:46:41,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 161 [2022-11-26 00:46:41,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:41,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:41,171 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-26 00:46:41,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 137 treesize of output 212 [2022-11-26 00:46:41,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:41,273 INFO L321 Elim1Store]: treesize reduction 57, result has 31.3 percent of original size [2022-11-26 00:46:41,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2022-11-26 00:46:41,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:41,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:41,451 INFO L321 Elim1Store]: treesize reduction 118, result has 21.9 percent of original size [2022-11-26 00:46:41,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 62 [2022-11-26 00:46:45,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:45,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:45,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:45,184 INFO L321 Elim1Store]: treesize reduction 88, result has 40.9 percent of original size [2022-11-26 00:46:45,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 151 treesize of output 119 [2022-11-26 00:46:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:46:45,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:46:57,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:46:57,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36779202] [2022-11-26 00:46:57,232 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:46:57,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314524477] [2022-11-26 00:46:57,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314524477] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:46:57,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [850592702] [2022-11-26 00:46:57,235 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-26 00:46:57,235 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:46:57,235 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:46:57,235 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:46:57,236 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:46:57,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:57,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:57,427 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-26 00:46:57,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-26 00:46:57,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:57,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:57,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-26 00:46:57,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:57,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:57,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-26 00:46:57,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:57,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:57,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:57,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:57,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:57,724 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-26 00:46:57,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 361 treesize of output 359 [2022-11-26 00:46:57,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:57,874 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-26 00:46:57,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-11-26 00:46:57,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:58,452 INFO L321 Elim1Store]: treesize reduction 176, result has 51.6 percent of original size [2022-11-26 00:46:58,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 493 treesize of output 628 [2022-11-26 00:46:58,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:58,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:58,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:58,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 311 treesize of output 393 [2022-11-26 00:46:58,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:58,848 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:58,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 140 [2022-11-26 00:46:58,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:58,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:58,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:58,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 346 treesize of output 426 [2022-11-26 00:46:58,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:46:58,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:58,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 160 [2022-11-26 00:46:59,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:46:59,024 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:47:00,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:47:00,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 30 [2022-11-26 00:47:00,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:47:00,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 28 [2022-11-26 00:47:01,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:47:01,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 30 [2022-11-26 00:47:01,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:47:01,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 28 [2022-11-26 00:47:02,005 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:47:02,012 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:47:02,020 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:47:02,027 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:47:03,624 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-26 00:47:03,644 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 12 for LOIs [2022-11-26 00:47:03,646 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:47:50,115 WARN L233 SmtUtils]: Spent 35.64s on a formula simplification. DAG size of input: 667 DAG size of output: 184 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:49:37,149 WARN L233 SmtUtils]: Spent 1.65m on a formula simplification. DAG size of input: 664 DAG size of output: 180 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:49:40,369 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1263#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= (ite (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:49:40,369 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:49:40,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:49:40,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-11-26 00:49:40,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928619913] [2022-11-26 00:49:40,370 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-26 00:49:40,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-26 00:49:40,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:49:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-26 00:49:40,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=3578, Unknown=8, NotChecked=0, Total=4032 [2022-11-26 00:49:40,374 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 29 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 19 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-26 00:49:49,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:49:49,564 INFO L93 Difference]: Finished difference Result 93 states and 110 transitions. [2022-11-26 00:49:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-26 00:49:49,565 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 19 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 36 [2022-11-26 00:49:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:49:49,567 INFO L225 Difference]: With dead ends: 93 [2022-11-26 00:49:49,567 INFO L226 Difference]: Without dead ends: 90 [2022-11-26 00:49:49,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 176.3s TimeCoverageRelationStatistics Valid=675, Invalid=5323, Unknown=8, NotChecked=0, Total=6006 [2022-11-26 00:49:49,570 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 73 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:49:49,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 185 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-26 00:49:49,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-26 00:49:49,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 57. [2022-11-26 00:49:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-26 00:49:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2022-11-26 00:49:49,593 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 36 [2022-11-26 00:49:49,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:49:49,593 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2022-11-26 00:49:49,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 19 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-26 00:49:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2022-11-26 00:49:49,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-26 00:49:49,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:49:49,595 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:49,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:49:49,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:49:49,808 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:49:49,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:49:49,808 INFO L85 PathProgramCache]: Analyzing trace with hash 801667564, now seen corresponding path program 4 times [2022-11-26 00:49:49,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:49:49,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723717487] [2022-11-26 00:49:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:49,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:49:49,829 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:49:49,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720086105] [2022-11-26 00:49:49,830 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 00:49:49,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:49:49,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:49:49,831 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:49:49,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:49:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:49,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-26 00:49:49,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:49:50,218 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-26 00:49:50,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:49:50,395 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-26 00:49:50,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:49:50,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723717487] [2022-11-26 00:49:50,396 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:49:50,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720086105] [2022-11-26 00:49:50,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720086105] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:49:50,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2119488099] [2022-11-26 00:49:50,399 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-26 00:49:50,399 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:49:50,400 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:49:50,400 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:49:50,400 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:49:50,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:50,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:50,640 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-26 00:49:50,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-26 00:49:50,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:50,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:50,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-26 00:49:50,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:50,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:50,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-11-26 00:49:50,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:50,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:50,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:50,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:50,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:49:50,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:50,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:49:50,886 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-11-26 00:49:50,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 368 treesize of output 354 [2022-11-26 00:49:50,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:49:50,977 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-26 00:49:50,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-11-26 00:49:51,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:51,721 INFO L321 Elim1Store]: treesize reduction 176, result has 51.6 percent of original size [2022-11-26 00:49:51,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 493 treesize of output 628 [2022-11-26 00:49:52,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:49:52,189 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:49:53,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:49:53,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:49:53,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:49:53,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 467 treesize of output 631 [2022-11-26 00:49:53,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:53,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:49:53,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 501 treesize of output 442 [2022-11-26 00:49:56,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:56,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 70 [2022-11-26 00:49:56,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:56,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 37 [2022-11-26 00:49:58,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:58,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 70 [2022-11-26 00:49:58,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:49:58,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 37 [2022-11-26 00:50:00,026 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-26 00:50:00,045 INFO L197 IcfgInterpreter]: Interpreting procedure square with input of size 12 for LOIs [2022-11-26 00:50:00,048 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:50:42,058 WARN L233 SmtUtils]: Spent 33.11s on a formula simplification. DAG size of input: 829 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:51:34,625 WARN L233 SmtUtils]: Spent 42.45s on a formula simplification. DAG size of input: 826 DAG size of output: 304 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:51:37,186 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1765#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= (ite (= |ULTIMATE.start_main_~sum1~0#1| |ULTIMATE.start_main_~sum2~0#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:51:37,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:51:37,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:51:37,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-26 00:51:37,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79479785] [2022-11-26 00:51:37,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:51:37,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:51:37,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:37,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:51:37,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=791, Unknown=7, NotChecked=0, Total=930 [2022-11-26 00:51:37,188 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-26 00:51:38,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:38,187 INFO L93 Difference]: Finished difference Result 94 states and 114 transitions. [2022-11-26 00:51:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:51:38,187 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 37 [2022-11-26 00:51:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:38,189 INFO L225 Difference]: With dead ends: 94 [2022-11-26 00:51:38,189 INFO L226 Difference]: Without dead ends: 91 [2022-11-26 00:51:38,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 97.6s TimeCoverageRelationStatistics Valid=192, Invalid=1207, Unknown=7, NotChecked=0, Total=1406 [2022-11-26 00:51:38,191 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 25 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:38,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 119 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:51:38,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-26 00:51:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 82. [2022-11-26 00:51:38,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 54 states have internal predecessors, (60), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-26 00:51:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2022-11-26 00:51:38,223 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 37 [2022-11-26 00:51:38,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:38,223 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2022-11-26 00:51:38,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-26 00:51:38,224 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2022-11-26 00:51:38,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-26 00:51:38,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:38,226 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:38,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:51:38,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-26 00:51:38,431 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:51:38,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:38,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2143999722, now seen corresponding path program 1 times [2022-11-26 00:51:38,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:38,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140161605] [2022-11-26 00:51:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:38,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:38,455 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:51:38,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871754516] [2022-11-26 00:51:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:38,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:51:38,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:51:38,457 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:51:38,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07363d-2830-4589-8abb-bac728d570ed/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:51:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:39,280 WARN L261 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 143 conjunts are in the unsatisfiable core [2022-11-26 00:51:39,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:51:39,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-26 00:51:39,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:39,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-26 00:51:39,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-26 00:51:39,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-26 00:51:39,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-26 00:51:39,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:39,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:39,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-11-26 00:51:40,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:40,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 183 [2022-11-26 00:51:40,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 168 [2022-11-26 00:51:40,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:40,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:41,005 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-26 00:51:41,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 216 [2022-11-26 00:51:41,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:41,156 INFO L321 Elim1Store]: treesize reduction 63, result has 29.2 percent of original size [2022-11-26 00:51:41,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 48 [2022-11-26 00:51:41,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:41,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:41,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:51:41,895 INFO L321 Elim1Store]: treesize reduction 269, result has 40.5 percent of original size [2022-11-26 00:51:41,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 294 treesize of output 540 [2022-11-26 00:51:43,175 INFO L321 Elim1Store]: treesize reduction 102, result has 31.5 percent of original size [2022-11-26 00:51:43,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 236 treesize of output 121 [2022-11-26 00:51:43,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:51:43,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:51:43,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:51:43,284 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:51:43,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 38 [2022-11-26 00:51:46,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:46,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 541 treesize of output 502 [2022-11-26 00:51:46,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 528 treesize of output 494 [2022-11-26 00:51:46,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:46,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:46,756 INFO L321 Elim1Store]: treesize reduction 379, result has 0.3 percent of original size [2022-11-26 00:51:46,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 390 treesize of output 408 [2022-11-26 00:51:46,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:51:47,081 INFO L321 Elim1Store]: treesize reduction 50, result has 39.8 percent of original size [2022-11-26 00:51:47,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 291 treesize of output 306 [2022-11-26 00:51:47,744 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:52:25,148 WARN L233 SmtUtils]: Spent 21.53s on a formula simplification. DAG size of input: 121 DAG size of output: 107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:52:36,809 WARN L233 SmtUtils]: Spent 10.64s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:52:47,966 WARN L233 SmtUtils]: Spent 10.37s on a formula simplification that was a NOOP. DAG size: 114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:54:07,708 WARN L233 SmtUtils]: Spent 36.15s on a formula simplification that was a NOOP. DAG size: 183 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:54:53,734 WARN L233 SmtUtils]: Spent 39.16s on a formula simplification that was a NOOP. DAG size: 185 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:56:27,914 WARN L233 SmtUtils]: Spent 55.92s on a formula simplification that was a NOOP. DAG size: 167 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:57:32,164 WARN L233 SmtUtils]: Spent 1.00m on a formula simplification that was a NOOP. DAG size: 171 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)