./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/add-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_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/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_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/add-3-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/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_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/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 efbd812580893a7521723358e51d4f43c4b930b57b026212f5a7d5f447f3e0f8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:29:45,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:29:45,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:29:45,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:29:45,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:29:45,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:29:45,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:29:45,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:29:45,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:29:45,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:29:45,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:29:45,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:29:45,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:29:45,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:29:45,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:29:45,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:29:45,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:29:45,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:29:45,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:29:45,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:29:45,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:29:45,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:29:45,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:29:45,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:29:45,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:29:45,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:29:45,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:29:45,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:29:45,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:29:45,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:29:45,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:29:45,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:29:45,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:29:45,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:29:45,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:29:45,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:29:45,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:29:45,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:29:45,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:29:45,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:29:45,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:29:45,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:29:45,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:29:45,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:29:45,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:29:45,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:29:45,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:29:45,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:29:45,405 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:29:45,405 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:29:45,405 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:29:45,406 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:29:45,406 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:29:45,406 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:29:45,406 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:29:45,406 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:29:45,406 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:29:45,406 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:29:45,407 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:29:45,407 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:29:45,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:29:45,407 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:29:45,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:29:45,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:29:45,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:29:45,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:29:45,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:29:45,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:29:45,408 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:29:45,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:29:45,409 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:29:45,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:29:45,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:29:45,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:29:45,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:29:45,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:29:45,410 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:29:45,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:29:45,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:29:45,410 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:29:45,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:29:45,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:29:45,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:29:45,411 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_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efbd812580893a7521723358e51d4f43c4b930b57b026212f5a7d5f447f3e0f8 [2022-12-14 11:29:45,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:29:45,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:29:45,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:29:45,611 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:29:45,611 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:29:45,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-multidimensional/add-3-n-u.c [2022-12-14 11:29:48,200 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:29:48,354 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:29:48,355 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/sv-benchmarks/c/array-multidimensional/add-3-n-u.c [2022-12-14 11:29:48,360 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/data/47edb16d8/5e306e188f5b4e2bb1452fd67d118417/FLAG98ec8415b [2022-12-14 11:29:48,760 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/data/47edb16d8/5e306e188f5b4e2bb1452fd67d118417 [2022-12-14 11:29:48,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:29:48,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:29:48,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:29:48,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:29:48,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:29:48,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:29:48" (1/1) ... [2022-12-14 11:29:48,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4faa5b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:29:48, skipping insertion in model container [2022-12-14 11:29:48,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:29:48" (1/1) ... [2022-12-14 11:29:48,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:29:48,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:29:48,892 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_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/sv-benchmarks/c/array-multidimensional/add-3-n-u.c[321,334] [2022-12-14 11:29:48,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:29:48,922 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:29:48,930 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_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/sv-benchmarks/c/array-multidimensional/add-3-n-u.c[321,334] [2022-12-14 11:29:48,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:29:48,957 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:29:48,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:29:48 WrapperNode [2022-12-14 11:29:48,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:29:48,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:29:48,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:29:48,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:29:48,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:29:48" (1/1) ... [2022-12-14 11:29:48,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:29:48" (1/1) ... [2022-12-14 11:29:48,989 INFO L138 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 118 [2022-12-14 11:29:48,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:29:48,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:29:48,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:29:48,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:29:49,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:29:48" (1/1) ... [2022-12-14 11:29:49,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:29:48" (1/1) ... [2022-12-14 11:29:49,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:29:48" (1/1) ... [2022-12-14 11:29:49,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:29:48" (1/1) ... [2022-12-14 11:29:49,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:29:48" (1/1) ... [2022-12-14 11:29:49,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:29:48" (1/1) ... [2022-12-14 11:29:49,022 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:29:48" (1/1) ... [2022-12-14 11:29:49,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:29:48" (1/1) ... [2022-12-14 11:29:49,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:29:49,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:29:49,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:29:49,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:29:49,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:29:48" (1/1) ... [2022-12-14 11:29:49,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:29:49,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:29:49,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:29:49,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:29:49,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:29:49,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:29:49,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:29:49,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 11:29:49,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:29:49,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:29:49,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 11:29:49,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:29:49,132 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:29:49,134 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:29:49,270 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:29:49,300 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:29:49,300 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-12-14 11:29:49,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:29:49 BoogieIcfgContainer [2022-12-14 11:29:49,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:29:49,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:29:49,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:29:49,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:29:49,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:29:48" (1/3) ... [2022-12-14 11:29:49,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a6f753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:29:49, skipping insertion in model container [2022-12-14 11:29:49,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:29:48" (2/3) ... [2022-12-14 11:29:49,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a6f753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:29:49, skipping insertion in model container [2022-12-14 11:29:49,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:29:49" (3/3) ... [2022-12-14 11:29:49,309 INFO L112 eAbstractionObserver]: Analyzing ICFG add-3-n-u.c [2022-12-14 11:29:49,323 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:29:49,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:29:49,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:29:49,365 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;@37da3e9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:29:49,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:29:49,368 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 11:29:49,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:29:49,373 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:29:49,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:29:49,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:29:49,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:29:49,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1309681414, now seen corresponding path program 1 times [2022-12-14 11:29:49,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:29:49,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836303960] [2022-12-14 11:29:49,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:29:49,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:29:49,455 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:29:49,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350654299] [2022-12-14 11:29:49,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:29:49,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:29:49,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:29:49,457 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:29:49,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:29:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:29:49,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:29:49,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:29:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:29:49,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:29:49,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:29:49,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836303960] [2022-12-14 11:29:49,595 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:29:49,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350654299] [2022-12-14 11:29:49,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350654299] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:29:49,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:29:49,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:29:49,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192269496] [2022-12-14 11:29:49,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:29:49,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:29:49,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:29:49,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:29:49,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:29:49,634 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 11:29:49,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:29:49,684 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2022-12-14 11:29:49,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:29:49,686 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 11:29:49,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:29:49,691 INFO L225 Difference]: With dead ends: 29 [2022-12-14 11:29:49,691 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 11:29:49,693 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 11:29:49,696 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 11:29:49,697 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 11:29:49,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 11:29:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 11:29:49,718 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 11:29:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2022-12-14 11:29:49,719 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 8 [2022-12-14 11:29:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:29:49,720 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 23 transitions. [2022-12-14 11:29:49,720 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 11:29:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2022-12-14 11:29:49,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 11:29:49,720 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:29:49,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:29:49,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:29:49,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 11:29:49,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:29:49,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:29:49,923 INFO L85 PathProgramCache]: Analyzing trace with hash -93509073, now seen corresponding path program 1 times [2022-12-14 11:29:49,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:29:49,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294191231] [2022-12-14 11:29:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:29:49,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:29:49,941 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:29:49,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492662404] [2022-12-14 11:29:49,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:29:49,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:29:49,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:29:49,943 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:29:49,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:29:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:29:50,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:29:50,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:29:50,030 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 11:29:50,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:29:50,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:29:50,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294191231] [2022-12-14 11:29:50,031 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:29:50,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492662404] [2022-12-14 11:29:50,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492662404] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:29:50,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:29:50,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:29:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299392708] [2022-12-14 11:29:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:29:50,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:29:50,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:29:50,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:29:50,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:29:50,034 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 11:29:50,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:29:50,089 INFO L93 Difference]: Finished difference Result 40 states and 63 transitions. [2022-12-14 11:29:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:29:50,090 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 11:29:50,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:29:50,090 INFO L225 Difference]: With dead ends: 40 [2022-12-14 11:29:50,091 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 11:29:50,091 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 11:29:50,092 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 11:29:50,092 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 11:29:50,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 11:29:50,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2022-12-14 11:29:50,096 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 11:29:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2022-12-14 11:29:50,097 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 26 transitions. Word has length 10 [2022-12-14 11:29:50,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:29:50,097 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 26 transitions. [2022-12-14 11:29:50,098 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 11:29:50,098 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 26 transitions. [2022-12-14 11:29:50,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 11:29:50,098 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:29:50,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:29:50,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 11:29:50,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:29:50,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:29:50,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:29:50,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1719492123, now seen corresponding path program 1 times [2022-12-14 11:29:50,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:29:50,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441605059] [2022-12-14 11:29:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:29:50,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:29:50,336 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:29:50,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602466854] [2022-12-14 11:29:50,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:29:50,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:29:50,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:29:50,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:29:50,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:29:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:29:50,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:29:50,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:29:50,503 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 11:29:50,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:29:50,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:29:50,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441605059] [2022-12-14 11:29:50,503 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:29:50,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602466854] [2022-12-14 11:29:50,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602466854] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:29:50,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:29:50,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:29:50,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623247241] [2022-12-14 11:29:50,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:29:50,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:29:50,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:29:50,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:29:50,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:29:50,506 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 11:29:50,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:29:50,557 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2022-12-14 11:29:50,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:29:50,558 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 11:29:50,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:29:50,558 INFO L225 Difference]: With dead ends: 43 [2022-12-14 11:29:50,559 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 11:29:50,559 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 11:29:50,560 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 11:29:50,560 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 11:29:50,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 11:29:50,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2022-12-14 11:29:50,573 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 11:29:50,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2022-12-14 11:29:50,573 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 12 [2022-12-14 11:29:50,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:29:50,574 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2022-12-14 11:29:50,574 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 11:29:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2022-12-14 11:29:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 11:29:50,575 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:29:50,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:29:50,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:29:50,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-14 11:29:50,775 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:29:50,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:29:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1820916710, now seen corresponding path program 1 times [2022-12-14 11:29:50,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:29:50,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133612647] [2022-12-14 11:29:50,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:29:50,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:29:50,787 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:29:50,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275664975] [2022-12-14 11:29:50,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:29:50,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:29:50,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:29:50,788 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:29:50,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:29:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:29:50,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:29:50,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:29:50,865 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 11:29:50,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:29:50,888 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 11:29:50,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:29:50,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133612647] [2022-12-14 11:29:50,888 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:29:50,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275664975] [2022-12-14 11:29:50,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275664975] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:29:50,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2040598565] [2022-12-14 11:29:50,903 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 11:29:50,903 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:29:50,906 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:29:50,910 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:29:50,910 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:29:50,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:50,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:50,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:51,055 INFO L321 Elim1Store]: treesize reduction 185, result has 22.9 percent of original size [2022-12-14 11:29:51,056 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 11:29:51,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:51,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:51,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:51,211 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 11:29:51,212 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 11:29:51,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:51,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:51,309 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 11:29:51,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:51,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:51,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:51,483 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-12-14 11:29:51,483 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 11:29:51,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:51,595 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:51,595 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 11:29:51,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:51,724 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:51,724 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 11:29:51,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:51,776 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:51,776 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 11:29:51,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:51,819 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:51,819 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 11:29:51,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:51,893 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:51,893 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 11:29:51,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:51,930 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:51,931 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 11:29:52,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:52,045 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:52,046 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 11:29:52,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:52,081 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:52,081 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 11:29:52,086 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:29:52,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2040598565] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:29:52,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:29:52,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2022-12-14 11:29:52,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683552344] [2022-12-14 11:29:52,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:29:52,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:29:52,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:29:52,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:29:52,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-12-14 11:29:52,227 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 11:29:52,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:29:52,308 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2022-12-14 11:29:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:29:52,309 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 11:29:52,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:29:52,309 INFO L225 Difference]: With dead ends: 42 [2022-12-14 11:29:52,310 INFO L226 Difference]: Without dead ends: 33 [2022-12-14 11:29:52,310 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 11:29:52,311 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 11:29:52,311 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 11:29:52,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-14 11:29:52,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2022-12-14 11:29:52,319 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 11:29:52,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2022-12-14 11:29:52,320 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 13 [2022-12-14 11:29:52,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:29:52,320 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2022-12-14 11:29:52,320 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 11:29:52,321 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2022-12-14 11:29:52,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 11:29:52,321 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:29:52,321 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 11:29:52,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 11:29:52,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:29:52,522 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:29:52,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:29:52,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1472206623, now seen corresponding path program 1 times [2022-12-14 11:29:52,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:29:52,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59128954] [2022-12-14 11:29:52,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:29:52,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:29:52,532 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:29:52,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340346293] [2022-12-14 11:29:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:29:52,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:29:52,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:29:52,533 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:29:52,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:29:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:29:52,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:29:52,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:29:52,604 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 11:29:52,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:29:52,618 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 11:29:52,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:29:52,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59128954] [2022-12-14 11:29:52,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:29:52,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340346293] [2022-12-14 11:29:52,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340346293] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:29:52,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1347044634] [2022-12-14 11:29:52,621 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 11:29:52,621 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:29:52,622 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:29:52,622 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:29:52,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:29:52,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:52,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:52,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:52,726 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 11:29:52,727 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 11:29:52,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:52,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:52,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:52,744 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 11:29:52,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:52,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:52,794 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 11:29:52,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:52,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:52,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:52,903 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-12-14 11:29:52,903 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 11:29:52,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:52,992 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:52,992 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 11:29:53,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:53,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:53,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,137 INFO L321 Elim1Store]: treesize reduction 158, result has 18.6 percent of original size [2022-12-14 11:29:53,137 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 305 treesize of output 285 [2022-12-14 11:29:53,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,231 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:53,231 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 11:29:53,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,300 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:29:53,301 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 11:29:53,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,339 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:53,339 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 11:29:53,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,436 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:53,436 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 11:29:53,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,478 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:53,478 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 11:29:53,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,519 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:53,520 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 11:29:53,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,554 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:53,554 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 11:29:53,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,592 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:53,592 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 11:29:53,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,632 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:53,633 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 11:29:53,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,704 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:29:53,704 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 11:29:53,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,730 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:53,731 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 11:29:53,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,780 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:29:53,780 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 11:29:53,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,817 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:53,818 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 11:29:53,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,847 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:53,847 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 11:29:53,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,941 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-12-14 11:29:53,942 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 11:29:53,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:53,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,029 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:54,029 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 11:29:54,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,154 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:54,154 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 11:29:54,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,222 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:54,223 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 11:29:54,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,331 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:54,331 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 11:29:54,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,421 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:54,421 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 11:29:54,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,548 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:54,549 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 11:29:54,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,640 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:54,641 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 11:29:54,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,766 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:54,766 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 11:29:54,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,839 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:54,840 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 11:29:54,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,907 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:29:54,907 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 11:29:54,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:54,935 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:54,935 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 11:29:54,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:55,000 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:55,001 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 11:29:55,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:55,038 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:55,039 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 11:29:55,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:55,067 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:55,067 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 11:29:55,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:55,116 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:29:55,117 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 11:29:55,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:55,157 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:55,157 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 11:29:55,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:55,190 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:55,190 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 11:29:55,195 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:29:55,724 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 11:29:55,724 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:29:55,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:29:55,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-14 11:29:55,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215856718] [2022-12-14 11:29:55,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:29:55,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:29:55,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:29:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:29:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-12-14 11:29:55,726 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 11:29:55,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:29:55,794 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2022-12-14 11:29:55,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:29:55,794 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 11:29:55,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:29:55,795 INFO L225 Difference]: With dead ends: 64 [2022-12-14 11:29:55,795 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 11:29:55,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-14 11:29:55,796 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 11:29:55,796 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 11:29:55,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 11:29:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-12-14 11:29:55,807 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 11:29:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-12-14 11:29:55,807 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 18 [2022-12-14 11:29:55,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:29:55,808 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-12-14 11:29:55,808 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 11:29:55,808 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-12-14 11:29:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 11:29:55,808 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:29:55,808 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 11:29:55,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 11:29:56,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:29:56,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:29:56,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:29:56,011 INFO L85 PathProgramCache]: Analyzing trace with hash 728478838, now seen corresponding path program 2 times [2022-12-14 11:29:56,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:29:56,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887779067] [2022-12-14 11:29:56,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:29:56,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:29:56,026 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:29:56,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967674968] [2022-12-14 11:29:56,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:29:56,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:29:56,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:29:56,027 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:29:56,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 11:29:56,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 11:29:56,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:29:56,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:29:56,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:29:56,116 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 11:29:56,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:29:56,137 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 11:29:56,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:29:56,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887779067] [2022-12-14 11:29:56,137 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:29:56,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967674968] [2022-12-14 11:29:56,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967674968] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:29:56,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1783810047] [2022-12-14 11:29:56,140 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 11:29:56,140 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:29:56,140 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:29:56,140 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:29:56,140 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:29:56,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:56,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:56,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:56,221 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 11:29:56,221 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 11:29:56,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:56,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:56,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:56,239 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 11:29:56,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:56,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:56,280 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 11:29:56,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:56,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:29:56,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:56,395 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-12-14 11:29:56,396 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 11:29:56,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:56,484 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:56,484 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 11:29:56,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:56,559 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:29:56,559 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 66 treesize of output 45 [2022-12-14 11:29:56,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:56,593 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:56,593 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 11:29:56,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:56,679 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:29:56,680 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 11:29:56,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:56,723 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:56,723 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 11:29:56,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:56,757 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:56,758 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 11:29:56,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:56,815 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:56,816 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 11:29:56,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:56,858 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:56,859 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 11:29:56,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:56,889 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:56,889 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 11:29:56,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:56,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:56,979 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-12-14 11:29:56,979 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 11:29:57,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,051 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:57,051 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 11:29:57,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,176 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-12-14 11:29:57,176 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 11:29:57,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,249 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:57,249 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 11:29:57,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,352 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-12-14 11:29:57,352 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 11:29:57,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,425 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:57,426 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 11:29:57,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,526 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-12-14 11:29:57,527 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 11:29:57,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,600 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:57,600 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 11:29:57,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,717 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:57,718 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 11:29:57,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,788 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:29:57,789 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 11:29:57,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,865 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:57,865 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 11:29:57,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,894 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:57,894 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 11:29:57,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,954 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:29:57,955 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 11:29:57,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:57,992 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:57,993 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 11:29:58,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:58,020 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:58,020 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 11:29:58,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:58,069 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:29:58,069 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 11:29:58,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:58,105 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:58,105 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 11:29:58,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:29:58,131 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:29:58,131 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 11:29:58,135 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:29:58,714 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1044#(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 11:29:58,714 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:29:58,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:29:58,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-14 11:29:58,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457204600] [2022-12-14 11:29:58,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:29:58,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:29:58,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:29:58,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:29:58,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-12-14 11:29:58,715 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 11:29:58,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:29:58,816 INFO L93 Difference]: Finished difference Result 167 states and 219 transitions. [2022-12-14 11:29:58,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:29:58,816 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 11:29:58,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:29:58,818 INFO L225 Difference]: With dead ends: 167 [2022-12-14 11:29:58,818 INFO L226 Difference]: Without dead ends: 140 [2022-12-14 11:29:58,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-14 11:29:58,819 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 100 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:29:58,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 28 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:29:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-14 11:29:58,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 85. [2022-12-14 11:29:58,837 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 11:29:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2022-12-14 11:29:58,838 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 24 [2022-12-14 11:29:58,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:29:58,838 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2022-12-14 11:29:58,838 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 11:29:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2022-12-14 11:29:58,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 11:29:58,839 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:29:58,839 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 11:29:58,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 11:29:59,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:29:59,040 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:29:59,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:29:59,041 INFO L85 PathProgramCache]: Analyzing trace with hash -77489430, now seen corresponding path program 3 times [2022-12-14 11:29:59,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:29:59,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292345338] [2022-12-14 11:29:59,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:29:59,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:29:59,079 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:29:59,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501579462] [2022-12-14 11:29:59,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:29:59,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:29:59,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:29:59,081 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:29:59,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 11:39:10,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:39:10,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:39:10,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:39:10,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:39:10,358 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 11:39:10,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:39:10,387 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 11:39:10,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:39:10,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292345338] [2022-12-14 11:39:10,387 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:39:10,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501579462] [2022-12-14 11:39:10,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501579462] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:39:10,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [568729120] [2022-12-14 11:39:10,389 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 11:39:10,389 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:39:10,390 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:39:10,390 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:39:10,390 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:39:10,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:10,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:10,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:10,491 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 11:39:10,491 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 11:39:10,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:10,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:10,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:10,510 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 11:39:10,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:10,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:10,558 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 11:39:10,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:10,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:10,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:10,682 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-12-14 11:39:10,682 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 11:39:10,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:10,755 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:10,755 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 11:39:10,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:10,818 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:39:10,818 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 11:39:10,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:10,856 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:10,856 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 11:39:10,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:10,935 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:10,935 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 11:39:10,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:10,969 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:10,969 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 11:39:10,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,007 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:39:11,007 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 11:39:11,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,043 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:11,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 53 [2022-12-14 11:39:11,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,071 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:11,071 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 11:39:11,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,129 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:39:11,129 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 11:39:11,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,165 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:11,165 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 11:39:11,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,202 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:11,203 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 11:39:11,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,246 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:39:11,246 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 11:39:11,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,279 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:11,279 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 11:39:11,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,310 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:11,310 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 11:39:11,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,354 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:11,354 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 11:39:11,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,385 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:11,386 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 11:39:11,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,412 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:11,412 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 11:39:11,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,470 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-12-14 11:39:11,470 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 11:39:11,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,529 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:39:11,530 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 11:39:11,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,662 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-12-14 11:39:11,663 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 11:39:11,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,719 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:39:11,719 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 11:39:11,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,802 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-12-14 11:39:11,802 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 11:39:11,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,853 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:39:11,854 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 11:39:11,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,926 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-12-14 11:39:11,927 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 11:39:11,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:11,980 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:39:11,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-12-14 11:39:12,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:12,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:12,083 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:39:12,083 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 11:39:12,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:12,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:12,143 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:39:12,144 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 11:39:12,153 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:39:12,841 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1955#(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 11:39:12,842 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:39:12,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:39:12,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-14 11:39:12,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612857478] [2022-12-14 11:39:12,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:39:12,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:39:12,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:39:12,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:39:12,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-12-14 11:39:12,843 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 11:39:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:39:13,020 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2022-12-14 11:39:13,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:39:13,020 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 11:39:13,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:39:13,023 INFO L225 Difference]: With dead ends: 354 [2022-12-14 11:39:13,023 INFO L226 Difference]: Without dead ends: 278 [2022-12-14 11:39:13,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 186 SyntacticMatches, 15 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-14 11:39:13,024 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 152 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 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 11:39:13,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 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 11:39:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-12-14 11:39:13,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 271. [2022-12-14 11:39:13,076 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 11:39:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 333 transitions. [2022-12-14 11:39:13,078 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 333 transitions. Word has length 72 [2022-12-14 11:39:13,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:39:13,078 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 333 transitions. [2022-12-14 11:39:13,078 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 11:39:13,078 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 333 transitions. [2022-12-14 11:39:13,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-12-14 11:39:13,080 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:39:13,080 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 11:39:13,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 11:39:13,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:39:13,282 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:39:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:39:13,283 INFO L85 PathProgramCache]: Analyzing trace with hash -629501914, now seen corresponding path program 4 times [2022-12-14 11:39:13,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:39:13,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272517771] [2022-12-14 11:39:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:39:13,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:39:13,391 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:39:13,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175198624] [2022-12-14 11:39:13,391 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 11:39:13,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:39:13,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:39:13,392 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:39:13,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 11:39:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:39:13,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 11:39:13,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:39:13,804 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 11:39:13,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:39:13,844 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 11:39:13,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:39:13,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272517771] [2022-12-14 11:39:13,844 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 11:39:13,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175198624] [2022-12-14 11:39:13,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175198624] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:39:13,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1868955944] [2022-12-14 11:39:13,846 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 11:39:13,846 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:39:13,846 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:39:13,846 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:39:13,846 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:39:13,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:13,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:13,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:13,921 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-12-14 11:39:13,921 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 11:39:13,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:13,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:13,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:13,935 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 11:39:13,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:13,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:13,969 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 11:39:14,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:14,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:14,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,067 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-12-14 11:39:14,067 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 11:39:14,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,140 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:14,141 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 11:39:14,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:14,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:39:14,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,258 INFO L321 Elim1Store]: treesize reduction 158, result has 18.6 percent of original size [2022-12-14 11:39:14,258 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 305 treesize of output 285 [2022-12-14 11:39:14,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,311 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:14,312 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 11:39:14,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,363 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:14,364 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 11:39:14,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,409 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:14,409 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 11:39:14,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,437 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:14,437 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 11:39:14,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,509 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:39:14,509 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 11:39:14,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,542 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:14,543 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 11:39:14,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,604 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:14,605 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 11:39:14,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,639 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:14,639 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 11:39:14,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,691 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:39:14,692 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 11:39:14,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,724 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:14,725 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 11:39:14,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,761 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:39:14,761 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 11:39:14,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,799 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:14,799 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 11:39:14,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,828 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:14,828 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 11:39:14,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,882 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:14,882 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 11:39:14,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,909 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:14,909 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 11:39:14,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,936 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:39:14,936 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 11:39:14,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,974 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:14,974 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 11:39:14,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:14,999 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:15,000 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 11:39:15,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,029 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:39:15,029 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 11:39:15,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,074 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:15,074 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 11:39:15,095 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,106 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:15,106 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 11:39:15,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,155 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:39:15,156 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 11:39:15,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,192 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:15,192 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 11:39:15,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,234 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:39:15,234 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 11:39:15,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,270 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:15,270 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 11:39:15,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,299 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:15,299 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 11:39:15,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,324 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-12-14 11:39:15,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 45 [2022-12-14 11:39:15,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,361 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:15,361 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 11:39:15,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,390 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 11:39:15,391 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 11:39:15,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,440 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:39:15,440 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 11:39:15,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,507 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:39:15,507 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 11:39:15,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,636 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-12-14 11:39:15,636 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 11:39:15,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,697 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:39:15,698 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 11:39:15,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,788 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:39:15,788 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 11:39:15,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,860 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:39:15,860 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 11:39:15,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,953 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:39:15,954 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 11:39:15,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:15,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:16,027 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:39:16,027 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 11:39:16,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:16,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:16,146 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-12-14 11:39:16,146 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 11:39:16,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:16,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:39:16,215 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-12-14 11:39:16,215 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 11:39:16,225 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:39:16,829 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4470#(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 11:39:16,829 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:39:16,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:39:16,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-12-14 11:39:16,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963499185] [2022-12-14 11:39:16,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:39:16,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 11:39:16,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:39:16,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 11:39:16,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2022-12-14 11:39:16,831 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 11:39:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:39:17,125 INFO L93 Difference]: Finished difference Result 817 states and 1171 transitions. [2022-12-14 11:39:17,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 11:39:17,125 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 11:39:17,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:39:17,128 INFO L225 Difference]: With dead ends: 817 [2022-12-14 11:39:17,128 INFO L226 Difference]: Without dead ends: 554 [2022-12-14 11:39:17,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 600 SyntacticMatches, 27 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=244, Invalid=406, Unknown=0, NotChecked=0, Total=650 [2022-12-14 11:39:17,131 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 153 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:39:17,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 36 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:39:17,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-12-14 11:39:17,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 535. [2022-12-14 11:39:17,227 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 11:39:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 621 transitions. [2022-12-14 11:39:17,228 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 621 transitions. Word has length 216 [2022-12-14 11:39:17,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:39:17,228 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 621 transitions. [2022-12-14 11:39:17,228 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 11:39:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 621 transitions. [2022-12-14 11:39:17,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-12-14 11:39:17,233 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:39:17,233 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 11:39:17,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 11:39:17,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:39:17,435 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:39:17,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:39:17,436 INFO L85 PathProgramCache]: Analyzing trace with hash 842650150, now seen corresponding path program 5 times [2022-12-14 11:39:17,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:39:17,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459986590] [2022-12-14 11:39:17,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:39:17,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:39:17,603 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 11:39:17,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516280072] [2022-12-14 11:39:17,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:39:17,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:39:17,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:39:17,604 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:39:17,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32f09a4d-c6db-4e20-9a7f-d1f5e4f81602/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process