./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/diff-3-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/diff-3-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ae698f02be6e3657db0e7ca3e62c4cfb121d43a876624ed4d21d19b033e0c02e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:15:43,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:15:43,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:15:43,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:15:43,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:15:43,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:15:43,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:15:43,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:15:43,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:15:43,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:15:43,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:15:43,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:15:43,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:15:43,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:15:43,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:15:43,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:15:43,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:15:43,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:15:43,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:15:43,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:15:43,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:15:43,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:15:43,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:15:43,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:15:43,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:15:43,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:15:43,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:15:43,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:15:43,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:15:43,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:15:43,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:15:43,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:15:43,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:15:43,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:15:43,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:15:43,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:15:43,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:15:43,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:15:43,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:15:43,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:15:43,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:15:43,400 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:15:43,420 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:15:43,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:15:43,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:15:43,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:15:43,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:15:43,421 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:15:43,421 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:15:43,421 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:15:43,421 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:15:43,422 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:15:43,422 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:15:43,422 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:15:43,422 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:15:43,422 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:15:43,422 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:15:43,423 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:15:43,423 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:15:43,423 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:15:43,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:15:43,424 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:15:43,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:15:43,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:15:43,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:15:43,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:15:43,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:15:43,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:15:43,425 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:15:43,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:15:43,425 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:15:43,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:15:43,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:15:43,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:15:43,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:15:43,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:15:43,426 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:15:43,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:15:43,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:15:43,426 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:15:43,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:15:43,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:15:43,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:15:43,427 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_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae698f02be6e3657db0e7ca3e62c4cfb121d43a876624ed4d21d19b033e0c02e [2022-12-14 10:15:43,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:15:43,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:15:43,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:15:43,625 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:15:43,625 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:15:43,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-multidimensional/diff-3-n-u.c [2022-12-14 10:15:46,242 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:15:46,392 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:15:46,393 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/sv-benchmarks/c/array-multidimensional/diff-3-n-u.c [2022-12-14 10:15:46,397 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/data/076bc2ad0/8702c2eb35db4eef828e774da809e097/FLAG4f26fcd28 [2022-12-14 10:15:46,408 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/data/076bc2ad0/8702c2eb35db4eef828e774da809e097 [2022-12-14 10:15:46,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:15:46,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:15:46,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:15:46,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:15:46,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:15:46,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:15:46" (1/1) ... [2022-12-14 10:15:46,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76366ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:46, skipping insertion in model container [2022-12-14 10:15:46,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:15:46" (1/1) ... [2022-12-14 10:15:46,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:15:46,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:15:46,526 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_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/sv-benchmarks/c/array-multidimensional/diff-3-n-u.c[322,335] [2022-12-14 10:15:46,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:15:46,548 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:15:46,556 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_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/sv-benchmarks/c/array-multidimensional/diff-3-n-u.c[322,335] [2022-12-14 10:15:46,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:15:46,574 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:15:46,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:46 WrapperNode [2022-12-14 10:15:46,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:15:46,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:15:46,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:15:46,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:15:46,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:46" (1/1) ... [2022-12-14 10:15:46,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:46" (1/1) ... [2022-12-14 10:15:46,605 INFO L138 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 118 [2022-12-14 10:15:46,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:15:46,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:15:46,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:15:46,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:15:46,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:46" (1/1) ... [2022-12-14 10:15:46,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:46" (1/1) ... [2022-12-14 10:15:46,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:46" (1/1) ... [2022-12-14 10:15:46,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:46" (1/1) ... [2022-12-14 10:15:46,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:46" (1/1) ... [2022-12-14 10:15:46,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:46" (1/1) ... [2022-12-14 10:15:46,628 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:46" (1/1) ... [2022-12-14 10:15:46,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:46" (1/1) ... [2022-12-14 10:15:46,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:15:46,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:15:46,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:15:46,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:15:46,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:46" (1/1) ... [2022-12-14 10:15:46,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:15:46,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:46,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:15:46,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:15:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:15:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:15:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:15:46,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:15:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:15:46,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:15:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:15:46,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:15:46,769 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:15:46,771 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:15:46,933 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:15:46,975 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:15:46,976 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-12-14 10:15:46,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:15:46 BoogieIcfgContainer [2022-12-14 10:15:46,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:15:46,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:15:46,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:15:46,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:15:46,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:15:46" (1/3) ... [2022-12-14 10:15:46,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c3fb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:15:46, skipping insertion in model container [2022-12-14 10:15:46,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:15:46" (2/3) ... [2022-12-14 10:15:46,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c3fb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:15:46, skipping insertion in model container [2022-12-14 10:15:46,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:15:46" (3/3) ... [2022-12-14 10:15:46,987 INFO L112 eAbstractionObserver]: Analyzing ICFG diff-3-n-u.c [2022-12-14 10:15:47,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:15:47,006 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:15:47,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:15:47,054 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;@2abe4a46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:15:47,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:15:47,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:47,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:15:47,065 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:47,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:47,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:47,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:47,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2125816706, now seen corresponding path program 1 times [2022-12-14 10:15:47,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:47,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505802574] [2022-12-14 10:15:47,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:47,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:47,155 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:15:47,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271276397] [2022-12-14 10:15:47,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:47,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:47,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:47,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:47,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:15:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:47,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:15:47,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:15:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:15:47,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:15:47,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:15:47,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505802574] [2022-12-14 10:15:47,289 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:15:47,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271276397] [2022-12-14 10:15:47,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271276397] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:15:47,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:15:47,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:15:47,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010312702] [2022-12-14 10:15:47,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:15:47,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:15:47,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:15:47,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:15:47,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:15:47,322 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:47,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:15:47,375 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2022-12-14 10:15:47,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:15:47,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:15:47,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:15:47,385 INFO L225 Difference]: With dead ends: 29 [2022-12-14 10:15:47,385 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 10:15:47,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:15:47,392 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:15:47,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:15:47,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 10:15:47,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 10:15:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2022-12-14 10:15:47,424 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 8 [2022-12-14 10:15:47,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:15:47,424 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 23 transitions. [2022-12-14 10:15:47,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:47,425 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2022-12-14 10:15:47,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 10:15:47,425 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:47,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:47,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:15:47,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 10:15:47,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:47,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:47,630 INFO L85 PathProgramCache]: Analyzing trace with hash -952978249, now seen corresponding path program 1 times [2022-12-14 10:15:47,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:47,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394926541] [2022-12-14 10:15:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:47,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:47,680 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:15:47,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645381275] [2022-12-14 10:15:47,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:47,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:47,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:47,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:47,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:15:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:47,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:15:47,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:15:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:15:47,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:15:47,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:15:47,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394926541] [2022-12-14 10:15:47,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:15:47,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645381275] [2022-12-14 10:15:47,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645381275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:15:47,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:15:47,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:15:47,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133937648] [2022-12-14 10:15:47,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:15:47,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:15:47,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:15:47,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:15:47,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:15:47,835 INFO L87 Difference]: Start difference. First operand 15 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:47,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:15:47,883 INFO L93 Difference]: Finished difference Result 40 states and 63 transitions. [2022-12-14 10:15:47,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:15:47,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 10:15:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:15:47,884 INFO L225 Difference]: With dead ends: 40 [2022-12-14 10:15:47,884 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 10:15:47,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:15:47,885 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 46 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:15:47,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 11 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:15:47,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 10:15:47,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2022-12-14 10:15:47,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:47,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2022-12-14 10:15:47,889 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 26 transitions. Word has length 10 [2022-12-14 10:15:47,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:15:47,890 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 26 transitions. [2022-12-14 10:15:47,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:47,890 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 26 transitions. [2022-12-14 10:15:47,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 10:15:47,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:47,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:47,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 10:15:48,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:48,093 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:48,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:48,095 INFO L85 PathProgramCache]: Analyzing trace with hash 821330551, now seen corresponding path program 1 times [2022-12-14 10:15:48,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:48,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299828638] [2022-12-14 10:15:48,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:48,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:48,122 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:15:48,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223370151] [2022-12-14 10:15:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:48,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:48,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:48,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:48,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:15:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:48,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:15:48,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:15:48,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:15:48,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:15:48,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:15:48,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299828638] [2022-12-14 10:15:48,280 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:15:48,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223370151] [2022-12-14 10:15:48,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223370151] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:15:48,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:15:48,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:15:48,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266544031] [2022-12-14 10:15:48,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:15:48,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:15:48,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:15:48,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:15:48,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:15:48,282 INFO L87 Difference]: Start difference. First operand 18 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:48,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:15:48,331 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2022-12-14 10:15:48,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:15:48,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 10:15:48,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:15:48,333 INFO L225 Difference]: With dead ends: 43 [2022-12-14 10:15:48,333 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 10:15:48,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:15:48,335 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:15:48,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:15:48,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 10:15:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2022-12-14 10:15:48,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2022-12-14 10:15:48,343 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 12 [2022-12-14 10:15:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:15:48,343 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2022-12-14 10:15:48,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2022-12-14 10:15:48,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 10:15:48,344 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:48,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:48,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:15:48,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:48,546 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:48,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:48,547 INFO L85 PathProgramCache]: Analyzing trace with hash 66772088, now seen corresponding path program 1 times [2022-12-14 10:15:48,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:48,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615655197] [2022-12-14 10:15:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:48,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:48,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:15:48,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1348485905] [2022-12-14 10:15:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:48,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:48,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:48,566 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:48,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:15:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:48,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:15:48,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:15:48,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:15:48,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:15:48,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:15:48,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:15:48,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615655197] [2022-12-14 10:15:48,741 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:15:48,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348485905] [2022-12-14 10:15:48,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348485905] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:15:48,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1938811382] [2022-12-14 10:15:48,756 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 10:15:48,756 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:15:48,759 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:15:48,762 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:15:48,763 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:15:48,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:48,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:48,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:48,936 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 10:15:48,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-12-14 10:15:48,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:48,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:48,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:48,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-12-14 10:15:49,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:49,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:49,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 61 [2022-12-14 10:15:49,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:49,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:49,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:49,266 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-12-14 10:15:49,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-12-14 10:15:49,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:49,462 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:49,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-12-14 10:15:49,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:49,583 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:49,584 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 78 treesize of output 53 [2022-12-14 10:15:49,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:49,631 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:49,632 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 78 treesize of output 53 [2022-12-14 10:15:49,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:49,740 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:49,741 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 78 treesize of output 53 [2022-12-14 10:15:49,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:49,796 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:49,797 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 78 treesize of output 53 [2022-12-14 10:15:49,820 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:49,832 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:49,833 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 78 treesize of output 53 [2022-12-14 10:15:49,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:49,947 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 10:15:49,948 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 66 treesize of output 45 [2022-12-14 10:15:49,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:50,004 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:50,005 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 78 treesize of output 53 [2022-12-14 10:15:50,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:50,146 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 10:15:50,147 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 66 treesize of output 45 [2022-12-14 10:15:50,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:50,190 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:50,191 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 78 treesize of output 53 [2022-12-14 10:15:50,197 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:15:50,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1938811382] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:15:50,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:15:50,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2022-12-14 10:15:50,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827706272] [2022-12-14 10:15:50,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:15:50,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:15:50,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:15:50,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:15:50,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:15:50,426 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:50,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:15:50,518 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2022-12-14 10:15:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:15:50,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 10:15:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:15:50,519 INFO L225 Difference]: With dead ends: 42 [2022-12-14 10:15:50,519 INFO L226 Difference]: Without dead ends: 33 [2022-12-14 10:15:50,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:15:50,520 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:15:50,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:15:50,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-14 10:15:50,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2022-12-14 10:15:50,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:50,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2022-12-14 10:15:50,527 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 13 [2022-12-14 10:15:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:15:50,527 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2022-12-14 10:15:50,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:50,528 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2022-12-14 10:15:50,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 10:15:50,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:50,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:50,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:15:50,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:50,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:50,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:50,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1959799413, now seen corresponding path program 1 times [2022-12-14 10:15:50,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:50,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364864593] [2022-12-14 10:15:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:50,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:50,737 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:15:50,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138523145] [2022-12-14 10:15:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:50,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:50,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:50,739 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:50,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:15:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:15:50,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:15:50,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:15:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 10:15:50,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:15:50,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 10:15:50,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:15:50,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364864593] [2022-12-14 10:15:50,830 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:15:50,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138523145] [2022-12-14 10:15:50,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138523145] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:15:50,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [234798272] [2022-12-14 10:15:50,832 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 10:15:50,832 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:15:50,833 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:15:50,833 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:15:50,833 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:15:50,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:50,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:50,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:50,930 INFO L321 Elim1Store]: treesize reduction 185, result has 22.9 percent of original size [2022-12-14 10:15:50,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 81 [2022-12-14 10:15:50,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:50,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:50,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:51,051 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 10:15:51,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-12-14 10:15:51,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:51,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:51,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2022-12-14 10:15:51,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:51,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:51,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:51,280 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-12-14 10:15:51,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-12-14 10:15:51,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:51,374 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:51,374 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 78 treesize of output 53 [2022-12-14 10:15:51,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:51,480 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:51,480 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 78 treesize of output 53 [2022-12-14 10:15:51,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:51,511 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:51,512 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 78 treesize of output 53 [2022-12-14 10:15:51,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:51,583 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 10:15:51,583 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 66 treesize of output 45 [2022-12-14 10:15:51,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:51,635 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:51,635 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 78 treesize of output 53 [2022-12-14 10:15:51,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:51,729 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 10:15:51,729 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 66 treesize of output 45 [2022-12-14 10:15:51,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:51,773 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:51,774 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 78 treesize of output 53 [2022-12-14 10:15:51,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:51,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:51,894 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-12-14 10:15:51,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-12-14 10:15:52,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:52,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:52,077 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 10:15:52,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 10:15:52,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:52,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:52,276 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 10:15:52,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 10:15:52,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:52,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:52,447 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 10:15:52,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 10:15:52,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:52,631 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:52,631 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 78 treesize of output 53 [2022-12-14 10:15:52,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:52,665 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:52,665 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 78 treesize of output 53 [2022-12-14 10:15:52,670 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:15:53,077 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '708#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-12-14 10:15:53,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:15:53,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:15:53,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-14 10:15:53,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807475958] [2022-12-14 10:15:53,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:15:53,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:15:53,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:15:53,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:15:53,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:15:53,079 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:15:53,158 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2022-12-14 10:15:53,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:15:53,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-14 10:15:53,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:15:53,159 INFO L225 Difference]: With dead ends: 64 [2022-12-14 10:15:53,159 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 10:15:53,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=122, Unknown=0, NotChecked=0, Total=210 [2022-12-14 10:15:53,160 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 50 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:15:53,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 18 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:15:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 10:15:53,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-12-14 10:15:53,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:53,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-12-14 10:15:53,175 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 18 [2022-12-14 10:15:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:15:53,175 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-12-14 10:15:53,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-12-14 10:15:53,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 10:15:53,176 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:53,176 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:53,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 10:15:53,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:53,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:53,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:53,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1426358148, now seen corresponding path program 2 times [2022-12-14 10:15:53,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:53,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277130358] [2022-12-14 10:15:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:53,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:53,393 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:15:53,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74198150] [2022-12-14 10:15:53,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:15:53,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:53,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:53,395 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:53,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 10:15:53,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 10:15:53,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:15:53,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:15:53,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:15:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 10:15:53,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:15:53,514 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 10:15:53,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:15:53,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277130358] [2022-12-14 10:15:53,514 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:15:53,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74198150] [2022-12-14 10:15:53,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74198150] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:15:53,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1352899340] [2022-12-14 10:15:53,517 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 10:15:53,517 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:15:53,517 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:15:53,517 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:15:53,517 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:15:53,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:53,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:53,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:53,612 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 10:15:53,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-12-14 10:15:53,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:53,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:53,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:53,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-12-14 10:15:53,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:53,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:53,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 61 [2022-12-14 10:15:53,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:53,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:15:53,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:53,800 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-12-14 10:15:53,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-12-14 10:15:53,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:53,879 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:53,879 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 78 treesize of output 53 [2022-12-14 10:15:53,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:53,965 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 10:15:53,965 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 66 treesize of output 45 [2022-12-14 10:15:53,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,001 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:54,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-12-14 10:15:54,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,037 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:54,037 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 78 treesize of output 53 [2022-12-14 10:15:54,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,102 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:54,103 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 78 treesize of output 53 [2022-12-14 10:15:54,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,152 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:54,152 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 78 treesize of output 53 [2022-12-14 10:15:54,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,179 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:54,180 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 78 treesize of output 53 [2022-12-14 10:15:54,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,276 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 10:15:54,277 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 66 treesize of output 45 [2022-12-14 10:15:54,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,311 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:54,312 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 78 treesize of output 53 [2022-12-14 10:15:54,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,413 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-12-14 10:15:54,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-12-14 10:15:54,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,554 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 10:15:54,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 10:15:54,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,705 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 10:15:54,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 10:15:54,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,836 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 10:15:54,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 10:15:54,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:54,998 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 10:15:54,998 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 66 treesize of output 45 [2022-12-14 10:15:55,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:15:55,036 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:15:55,037 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 78 treesize of output 53 [2022-12-14 10:15:55,043 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:15:55,532 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1042#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-12-14 10:15:55,532 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:15:55,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:15:55,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-14 10:15:55,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310674969] [2022-12-14 10:15:55,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:15:55,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:15:55,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:15:55,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:15:55,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:15:55,534 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:55,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:15:55,652 INFO L93 Difference]: Finished difference Result 167 states and 219 transitions. [2022-12-14 10:15:55,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:15:55,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-14 10:15:55,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:15:55,654 INFO L225 Difference]: With dead ends: 167 [2022-12-14 10:15:55,654 INFO L226 Difference]: Without dead ends: 140 [2022-12-14 10:15:55,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 13 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=122, Unknown=0, NotChecked=0, Total=210 [2022-12-14 10:15:55,655 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 112 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:15:55,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 28 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:15:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-14 10:15:55,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 85. [2022-12-14 10:15:55,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 84 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2022-12-14 10:15:55,682 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 24 [2022-12-14 10:15:55,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:15:55,682 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2022-12-14 10:15:55,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:15:55,683 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2022-12-14 10:15:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 10:15:55,685 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:15:55,685 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:15:55,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 10:15:55,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 10:15:55,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:15:55,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:15:55,889 INFO L85 PathProgramCache]: Analyzing trace with hash -618004630, now seen corresponding path program 3 times [2022-12-14 10:15:55,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:15:55,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787759943] [2022-12-14 10:15:55,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:15:55,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:15:55,950 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:15:55,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272154220] [2022-12-14 10:15:55,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 10:15:55,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:15:55,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:15:55,952 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:15:55,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 10:25:05,936 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 10:25:05,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:25:06,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:25:06,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:25:06,093 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 151 proven. 1 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-12-14 10:25:06,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:25:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 122 proven. 30 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-12-14 10:25:06,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:25:06,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787759943] [2022-12-14 10:25:06,117 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:25:06,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272154220] [2022-12-14 10:25:06,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272154220] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:25:06,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [598153415] [2022-12-14 10:25:06,119 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 10:25:06,119 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:25:06,119 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:25:06,119 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:25:06,119 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:25:06,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:06,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:06,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:06,190 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 10:25:06,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-12-14 10:25:06,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:06,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:06,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:06,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-12-14 10:25:06,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:06,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:06,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 61 [2022-12-14 10:25:06,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:06,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:06,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:06,347 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-12-14 10:25:06,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-12-14 10:25:06,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:06,425 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:06,426 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 78 treesize of output 53 [2022-12-14 10:25:06,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:06,495 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 10:25:06,495 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 66 treesize of output 45 [2022-12-14 10:25:06,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:06,534 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:06,534 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 78 treesize of output 53 [2022-12-14 10:25:06,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:06,559 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:06,559 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 78 treesize of output 53 [2022-12-14 10:25:06,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:06,629 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 10:25:06,629 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 66 treesize of output 45 [2022-12-14 10:25:06,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:06,668 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:06,668 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 78 treesize of output 53 [2022-12-14 10:25:06,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:06,740 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:06,740 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 78 treesize of output 53 [2022-12-14 10:25:06,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:06,766 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:06,767 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 78 treesize of output 53 [2022-12-14 10:25:06,848 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:06,848 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:06,880 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 10:25:06,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 10:25:07,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:07,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:07,033 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 10:25:07,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 10:25:07,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:07,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:07,188 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 10:25:07,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 10:25:07,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:07,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:07,315 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 10:25:07,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 10:25:07,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:07,497 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:07,497 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 78 treesize of output 53 [2022-12-14 10:25:07,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:07,526 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:07,526 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 78 treesize of output 53 [2022-12-14 10:25:07,529 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:25:08,521 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1951#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-12-14 10:25:08,521 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:25:08,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:25:08,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-14 10:25:08,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621327518] [2022-12-14 10:25:08,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:25:08,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:25:08,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:25:08,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:25:08,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:25:08,523 INFO L87 Difference]: Start difference. First operand 85 states and 108 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:25:08,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:25:08,692 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2022-12-14 10:25:08,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:25:08,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-12-14 10:25:08,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:25:08,695 INFO L225 Difference]: With dead ends: 354 [2022-12-14 10:25:08,695 INFO L226 Difference]: Without dead ends: 278 [2022-12-14 10:25:08,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 160 SyntacticMatches, 43 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=88, Invalid=122, Unknown=0, NotChecked=0, Total=210 [2022-12-14 10:25:08,697 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 126 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:25:08,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 19 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:25:08,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-12-14 10:25:08,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 271. [2022-12-14 10:25:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.2333333333333334) internal successors, (333), 270 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:25:08,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 333 transitions. [2022-12-14 10:25:08,775 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 333 transitions. Word has length 72 [2022-12-14 10:25:08,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:25:08,775 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 333 transitions. [2022-12-14 10:25:08,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:25:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 333 transitions. [2022-12-14 10:25:08,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-12-14 10:25:08,777 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:25:08,777 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 16, 16, 16, 16, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:25:08,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 10:25:08,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:25:08,979 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:25:08,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:25:08,980 INFO L85 PathProgramCache]: Analyzing trace with hash -655371538, now seen corresponding path program 4 times [2022-12-14 10:25:08,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:25:08,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203662719] [2022-12-14 10:25:08,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:25:08,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:25:09,074 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:25:09,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832106391] [2022-12-14 10:25:09,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 10:25:09,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:25:09,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:25:09,075 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:25:09,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 10:25:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:25:09,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:25:09,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:25:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6720 backedges. 398 proven. 10 refuted. 0 times theorem prover too weak. 6312 trivial. 0 not checked. [2022-12-14 10:25:09,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:25:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6720 backedges. 398 proven. 10 refuted. 0 times theorem prover too weak. 6312 trivial. 0 not checked. [2022-12-14 10:25:09,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:25:09,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203662719] [2022-12-14 10:25:09,431 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:25:09,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832106391] [2022-12-14 10:25:09,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832106391] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:25:09,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [607282586] [2022-12-14 10:25:09,433 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 10:25:09,433 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:25:09,433 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:25:09,433 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:25:09,433 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:25:09,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:09,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:09,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:09,523 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 10:25:09,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-12-14 10:25:09,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:09,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:09,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:09,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-12-14 10:25:09,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:09,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:09,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2022-12-14 10:25:09,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:09,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:25:09,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:09,698 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-12-14 10:25:09,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-12-14 10:25:09,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:09,807 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:09,807 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 78 treesize of output 53 [2022-12-14 10:25:09,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:09,909 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:09,909 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 78 treesize of output 53 [2022-12-14 10:25:09,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:09,939 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:09,939 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 78 treesize of output 53 [2022-12-14 10:25:09,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,004 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:10,005 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 78 treesize of output 53 [2022-12-14 10:25:10,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,042 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:10,042 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 78 treesize of output 53 [2022-12-14 10:25:10,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,068 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:10,068 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 78 treesize of output 53 [2022-12-14 10:25:10,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,120 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:10,121 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 78 treesize of output 53 [2022-12-14 10:25:10,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,149 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:10,149 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 78 treesize of output 53 [2022-12-14 10:25:10,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,236 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-12-14 10:25:10,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-12-14 10:25:10,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,371 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 10:25:10,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 10:25:10,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,532 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 10:25:10,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 10:25:10,640 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,640 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,671 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 10:25:10,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 10:25:10,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,837 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:10,837 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 78 treesize of output 53 [2022-12-14 10:25:10,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:25:10,864 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 10:25:10,864 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 78 treesize of output 53 [2022-12-14 10:25:10,867 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:25:12,777 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4464#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-12-14 10:25:12,777 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:25:12,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:25:12,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-12-14 10:25:12,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006574727] [2022-12-14 10:25:12,778 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:25:12,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 10:25:12,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:25:12,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 10:25:12,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2022-12-14 10:25:12,780 INFO L87 Difference]: Start difference. First operand 271 states and 333 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:25:13,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:25:13,035 INFO L93 Difference]: Finished difference Result 817 states and 1171 transitions. [2022-12-14 10:25:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 10:25:13,035 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2022-12-14 10:25:13,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:25:13,036 INFO L225 Difference]: With dead ends: 817 [2022-12-14 10:25:13,036 INFO L226 Difference]: Without dead ends: 554 [2022-12-14 10:25:13,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 502 SyntacticMatches, 127 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=226, Invalid=326, Unknown=0, NotChecked=0, Total=552 [2022-12-14 10:25:13,038 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 135 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:25:13,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 36 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:25:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-12-14 10:25:13,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 535. [2022-12-14 10:25:13,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 1.1629213483146068) internal successors, (621), 534 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:25:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 621 transitions. [2022-12-14 10:25:13,154 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 621 transitions. Word has length 216 [2022-12-14 10:25:13,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:25:13,155 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 621 transitions. [2022-12-14 10:25:13,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:25:13,155 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 621 transitions. [2022-12-14 10:25:13,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-12-14 10:25:13,163 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:25:13,163 INFO L195 NwaCegarLoop]: trace histogram [160, 160, 16, 16, 16, 16, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:25:13,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 10:25:13,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:25:13,365 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:25:13,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:25:13,366 INFO L85 PathProgramCache]: Analyzing trace with hash 792008942, now seen corresponding path program 5 times [2022-12-14 10:25:13,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:25:13,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510504562] [2022-12-14 10:25:13,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:25:13,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:25:13,509 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:25:13,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826080790] [2022-12-14 10:25:13,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:25:13,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:25:13,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:25:13,510 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:25:13,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8193ff6e-f3b2-46dd-8404-d2c10793e5b2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process