./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array5_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/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_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array5_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/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_f59b4346-6d30-435f-b1fd-0009a65c02e0/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 3dd3ea9d30e76cbd39a744e53feb2b89c359b5b85c7df24161ceaf060cda3b02 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:54:59,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:54:59,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:54:59,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:54:59,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:54:59,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:54:59,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:54:59,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:54:59,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:54:59,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:54:59,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:54:59,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:54:59,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:54:59,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:54:59,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:54:59,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:54:59,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:54:59,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:54:59,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:54:59,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:54:59,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:54:59,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:54:59,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:54:59,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:54:59,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:54:59,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:54:59,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:54:59,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:54:59,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:54:59,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:54:59,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:54:59,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:54:59,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:54:59,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:54:59,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:54:59,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:54:59,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:54:59,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:54:59,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:54:59,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:54:59,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:54:59,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:54:59,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:54:59,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:54:59,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:54:59,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:54:59,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:54:59,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:54:59,297 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:54:59,297 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:54:59,297 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:54:59,298 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:54:59,298 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:54:59,298 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:54:59,298 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:54:59,298 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:54:59,298 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:54:59,299 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:54:59,299 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:54:59,299 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:54:59,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:54:59,300 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:54:59,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:54:59,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:54:59,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:54:59,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:54:59,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:54:59,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:54:59,301 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:54:59,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:54:59,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:54:59,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:54:59,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:54:59,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:54:59,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:54:59,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:54:59,302 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:54:59,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:54:59,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:54:59,302 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:54:59,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:54:59,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:54:59,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:54:59,303 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_f59b4346-6d30-435f-b1fd-0009a65c02e0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dd3ea9d30e76cbd39a744e53feb2b89c359b5b85c7df24161ceaf060cda3b02 [2022-12-14 10:54:59,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:54:59,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:54:59,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:54:59,527 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:54:59,527 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:54:59,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-patterns/array5_pattern.c [2022-12-14 10:55:02,196 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:55:02,334 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:55:02,334 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/sv-benchmarks/c/array-patterns/array5_pattern.c [2022-12-14 10:55:02,339 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/data/5d61f3c9e/86b97f5b39f34628b41fb34e1aa5f5c3/FLAG3312734f9 [2022-12-14 10:55:02,351 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/data/5d61f3c9e/86b97f5b39f34628b41fb34e1aa5f5c3 [2022-12-14 10:55:02,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:55:02,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:55:02,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:55:02,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:55:02,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:55:02,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:55:02" (1/1) ... [2022-12-14 10:55:02,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb4bdbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:55:02, skipping insertion in model container [2022-12-14 10:55:02,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:55:02" (1/1) ... [2022-12-14 10:55:02,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:55:02,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:55:02,481 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_f59b4346-6d30-435f-b1fd-0009a65c02e0/sv-benchmarks/c/array-patterns/array5_pattern.c[1890,1903] [2022-12-14 10:55:02,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:55:02,501 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:55:02,510 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_f59b4346-6d30-435f-b1fd-0009a65c02e0/sv-benchmarks/c/array-patterns/array5_pattern.c[1890,1903] [2022-12-14 10:55:02,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:55:02,526 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:55:02,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:55:02 WrapperNode [2022-12-14 10:55:02,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:55:02,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:55:02,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:55:02,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:55:02,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:55:02" (1/1) ... [2022-12-14 10:55:02,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:55:02" (1/1) ... [2022-12-14 10:55:02,551 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2022-12-14 10:55:02,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:55:02,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:55:02,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:55:02,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:55:02,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:55:02" (1/1) ... [2022-12-14 10:55:02,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:55:02" (1/1) ... [2022-12-14 10:55:02,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:55:02" (1/1) ... [2022-12-14 10:55:02,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:55:02" (1/1) ... [2022-12-14 10:55:02,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:55:02" (1/1) ... [2022-12-14 10:55:02,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:55:02" (1/1) ... [2022-12-14 10:55:02,566 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:55:02" (1/1) ... [2022-12-14 10:55:02,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:55:02" (1/1) ... [2022-12-14 10:55:02,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:55:02,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:55:02,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:55:02,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:55:02,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:55:02" (1/1) ... [2022-12-14 10:55:02,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:55:02,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:02,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:55:02,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:55:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:55:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 10:55:02,619 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 10:55:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:55:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:55:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:55:02,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:55:02,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:55:02,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:55:02,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:55:02,679 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:55:02,681 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:55:02,798 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:55:02,836 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:55:02,836 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 10:55:02,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:55:02 BoogieIcfgContainer [2022-12-14 10:55:02,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:55:02,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:55:02,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:55:02,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:55:02,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:55:02" (1/3) ... [2022-12-14 10:55:02,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4696f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:55:02, skipping insertion in model container [2022-12-14 10:55:02,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:55:02" (2/3) ... [2022-12-14 10:55:02,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4696f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:55:02, skipping insertion in model container [2022-12-14 10:55:02,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:55:02" (3/3) ... [2022-12-14 10:55:02,844 INFO L112 eAbstractionObserver]: Analyzing ICFG array5_pattern.c [2022-12-14 10:55:02,858 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:55:02,859 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:55:02,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:55:02,907 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;@4491444c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:55:02,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:55:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:55:02,916 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:02,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:02,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:02,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:02,925 INFO L85 PathProgramCache]: Analyzing trace with hash 959661797, now seen corresponding path program 1 times [2022-12-14 10:55:02,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:02,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836987816] [2022-12-14 10:55:02,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:02,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:03,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:03,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836987816] [2022-12-14 10:55:03,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836987816] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:03,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:03,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:55:03,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214687111] [2022-12-14 10:55:03,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:03,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 10:55:03,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:03,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 10:55:03,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:55:03,076 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 10:55:03,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:03,110 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2022-12-14 10:55:03,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 10:55:03,112 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 10:55:03,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:03,117 INFO L225 Difference]: With dead ends: 24 [2022-12-14 10:55:03,117 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 10:55:03,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:55:03,122 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:03,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:55:03,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 10:55:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 10:55:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-12-14 10:55:03,148 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2022-12-14 10:55:03,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:03,149 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-12-14 10:55:03,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 10:55:03,150 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-12-14 10:55:03,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 10:55:03,151 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:03,151 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:03,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:55:03,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:03,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:03,152 INFO L85 PathProgramCache]: Analyzing trace with hash 156202947, now seen corresponding path program 1 times [2022-12-14 10:55:03,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:03,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118470639] [2022-12-14 10:55:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:03,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:03,180 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:55:03,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055928987] [2022-12-14 10:55:03,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:03,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:03,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:03,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:03,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:55:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:03,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:55:03,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:55:03,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:55:03,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:03,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118470639] [2022-12-14 10:55:03,308 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:55:03,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055928987] [2022-12-14 10:55:03,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055928987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:03,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:03,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:55:03,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442812191] [2022-12-14 10:55:03,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:03,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:55:03,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:03,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:55:03,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:55:03,312 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:03,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:03,345 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2022-12-14 10:55:03,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:55:03,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-12-14 10:55:03,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:03,347 INFO L225 Difference]: With dead ends: 19 [2022-12-14 10:55:03,347 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 10:55:03,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:55:03,349 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:03,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 26 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:55:03,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 10:55:03,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 10:55:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-12-14 10:55:03,354 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 16 [2022-12-14 10:55:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:03,355 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-12-14 10:55:03,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-12-14 10:55:03,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 10:55:03,355 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:03,355 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:03,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:55:03,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-14 10:55:03,557 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:03,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:03,559 INFO L85 PathProgramCache]: Analyzing trace with hash 547086701, now seen corresponding path program 1 times [2022-12-14 10:55:03,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:03,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559004722] [2022-12-14 10:55:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:03,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:03,639 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:55:03,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453044135] [2022-12-14 10:55:03,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:03,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:03,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:03,641 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:03,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:55:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:03,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:55:03,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:03,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:55:03,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:03,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559004722] [2022-12-14 10:55:03,735 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:55:03,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453044135] [2022-12-14 10:55:03,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453044135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:55:03,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:55:03,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:55:03,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114192583] [2022-12-14 10:55:03,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:55:03,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:55:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:03,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:55:03,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:55:03,736 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:03,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:03,789 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-12-14 10:55:03,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:55:03,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-12-14 10:55:03,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:03,791 INFO L225 Difference]: With dead ends: 29 [2022-12-14 10:55:03,791 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 10:55:03,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:55:03,792 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:03,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 38 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:55:03,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 10:55:03,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 10:55:03,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-12-14 10:55:03,797 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 17 [2022-12-14 10:55:03,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:03,798 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-12-14 10:55:03,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:03,798 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-12-14 10:55:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 10:55:03,799 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:03,799 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:03,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 10:55:04,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:04,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:04,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:04,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1323480097, now seen corresponding path program 1 times [2022-12-14 10:55:04,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:04,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466476645] [2022-12-14 10:55:04,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:04,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:04,097 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:55:04,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375722740] [2022-12-14 10:55:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:04,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:04,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:04,099 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:04,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:55:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:04,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-14 10:55:04,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:04,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 10:55:04,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 10:55:04,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:04,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-12-14 10:55:04,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-12-14 10:55:04,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-14 10:55:04,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 13 [2022-12-14 10:55:04,615 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:04,629 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-12-14 10:55:04,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 24 [2022-12-14 10:55:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:04,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:55:04,851 INFO L321 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2022-12-14 10:55:04,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 98 treesize of output 132 [2022-12-14 10:55:04,866 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:04,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 64 [2022-12-14 10:55:05,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2022-12-14 10:55:05,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2022-12-14 10:55:05,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2022-12-14 10:55:05,069 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:05,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 280 treesize of output 193 [2022-12-14 10:55:05,091 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:05,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 242 treesize of output 237 [2022-12-14 10:55:05,125 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:05,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 127 [2022-12-14 10:55:05,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-12-14 10:55:05,558 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:05,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 64 [2022-12-14 10:55:06,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:55:06,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:06,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466476645] [2022-12-14 10:55:06,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:55:06,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375722740] [2022-12-14 10:55:06,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375722740] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:55:06,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [132504558] [2022-12-14 10:55:06,037 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:55:06,038 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:55:06,041 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:55:06,046 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:55:06,046 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:55:06,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:06,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:06,157 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 10:55:06,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 10:55:06,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:06,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:06,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-12-14 10:55:06,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:06,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:06,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 10:55:06,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:06,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:06,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:06,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:06,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:06,337 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 10:55:06,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 355 treesize of output 353 [2022-12-14 10:55:06,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:06,463 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:55:06,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-12-14 10:55:06,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:06,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:06,605 INFO L321 Elim1Store]: treesize reduction 21, result has 51.2 percent of original size [2022-12-14 10:55:06,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 38 [2022-12-14 10:55:06,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:06,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:06,643 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-12-14 10:55:06,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 38 [2022-12-14 10:55:06,779 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2022-12-14 10:55:06,780 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:55:09,119 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '422#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 10:55:09,120 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:55:09,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:55:09,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 22 [2022-12-14 10:55:09,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785730768] [2022-12-14 10:55:09,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:55:09,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 10:55:09,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:09,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 10:55:09,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1051, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 10:55:09,123 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 22 states, 19 states have (on average 1.368421052631579) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 10:55:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:11,056 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2022-12-14 10:55:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-14 10:55:11,057 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.368421052631579) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 18 [2022-12-14 10:55:11,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:11,058 INFO L225 Difference]: With dead ends: 55 [2022-12-14 10:55:11,058 INFO L226 Difference]: Without dead ends: 51 [2022-12-14 10:55:11,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=417, Invalid=2445, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 10:55:11,059 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 102 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:11,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 100 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 10:55:11,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-14 10:55:11,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 28. [2022-12-14 10:55:11,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:55:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-12-14 10:55:11,066 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 18 [2022-12-14 10:55:11,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:11,066 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-12-14 10:55:11,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.368421052631579) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 10:55:11,066 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-12-14 10:55:11,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 10:55:11,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:11,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:11,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:55:11,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:11,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:11,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:11,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1922027313, now seen corresponding path program 2 times [2022-12-14 10:55:11,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:11,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796133808] [2022-12-14 10:55:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:11,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:11,287 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:55:11,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545930898] [2022-12-14 10:55:11,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:55:11,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:11,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:11,288 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:11,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:55:11,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 10:55:11,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:55:11,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 10:55:11,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:11,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:11,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:55:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:55:11,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:11,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796133808] [2022-12-14 10:55:11,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:55:11,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545930898] [2022-12-14 10:55:11,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545930898] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:55:11,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1179990899] [2022-12-14 10:55:11,413 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:55:11,413 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:55:11,413 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:55:11,414 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:55:11,414 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:55:11,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:11,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:11,480 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 10:55:11,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 10:55:11,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:11,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:11,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-12-14 10:55:11,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:11,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:11,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-12-14 10:55:11,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:11,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:11,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:11,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:11,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:11,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:11,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:11,603 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-12-14 10:55:11,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 362 treesize of output 348 [2022-12-14 10:55:11,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:11,661 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:55:11,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-12-14 10:55:11,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:11,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:11,719 INFO L321 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2022-12-14 10:55:11,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2022-12-14 10:55:11,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:11,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:11,746 INFO L321 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2022-12-14 10:55:11,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2022-12-14 10:55:11,797 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-12-14 10:55:11,814 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:55:12,951 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '713#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 10:55:12,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:55:12,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:55:12,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-14 10:55:12,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816943783] [2022-12-14 10:55:12,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:55:12,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:55:12,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:12,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:55:12,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-12-14 10:55:12,953 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:55:13,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:13,032 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-12-14 10:55:13,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 10:55:13,032 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2022-12-14 10:55:13,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:13,033 INFO L225 Difference]: With dead ends: 43 [2022-12-14 10:55:13,033 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 10:55:13,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2022-12-14 10:55:13,033 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 23 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:13,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 45 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:55:13,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 10:55:13,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2022-12-14 10:55:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:13,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-12-14 10:55:13,037 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 19 [2022-12-14 10:55:13,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:13,037 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-12-14 10:55:13,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:55:13,037 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-12-14 10:55:13,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 10:55:13,038 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:13,038 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:13,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:55:13,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:13,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:13,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash -378128403, now seen corresponding path program 3 times [2022-12-14 10:55:13,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:13,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439954367] [2022-12-14 10:55:13,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:13,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:13,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:55:13,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704630711] [2022-12-14 10:55:13,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 10:55:13,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:13,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:13,269 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:13,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:55:13,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 10:55:13,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:55:13,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 10:55:13,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:13,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:55:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:55:13,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:13,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439954367] [2022-12-14 10:55:13,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:55:13,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704630711] [2022-12-14 10:55:13,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704630711] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:55:13,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [125389342] [2022-12-14 10:55:13,374 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:55:13,374 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:55:13,374 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:55:13,374 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:55:13,374 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:55:13,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:13,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:13,439 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 10:55:13,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 10:55:13,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:13,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:13,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-12-14 10:55:13,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:13,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:13,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 10:55:13,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:13,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:13,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:13,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:13,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:13,591 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 10:55:13,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 355 treesize of output 353 [2022-12-14 10:55:13,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:13,744 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:55:13,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-12-14 10:55:13,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:13,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:13,796 INFO L321 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2022-12-14 10:55:13,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2022-12-14 10:55:13,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:13,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:13,822 INFO L321 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2022-12-14 10:55:13,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2022-12-14 10:55:13,867 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-12-14 10:55:13,882 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:55:15,153 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '943#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 10:55:15,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:55:15,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:55:15,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-14 10:55:15,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563147394] [2022-12-14 10:55:15,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:55:15,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:55:15,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:15,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:55:15,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2022-12-14 10:55:15,155 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:55:15,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:15,206 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-12-14 10:55:15,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:55:15,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2022-12-14 10:55:15,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:15,206 INFO L225 Difference]: With dead ends: 27 [2022-12-14 10:55:15,207 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 10:55:15,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-12-14 10:55:15,208 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:15,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 27 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:55:15,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 10:55:15,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2022-12-14 10:55:15,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:15,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-12-14 10:55:15,213 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 19 [2022-12-14 10:55:15,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:15,213 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-12-14 10:55:15,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:55:15,213 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-12-14 10:55:15,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 10:55:15,214 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:15,214 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:15,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 10:55:15,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:15,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:15,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1162684035, now seen corresponding path program 4 times [2022-12-14 10:55:15,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:15,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261647174] [2022-12-14 10:55:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:15,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:15,468 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:55:15,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021595048] [2022-12-14 10:55:15,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 10:55:15,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:15,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:15,470 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:15,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 10:55:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:15,539 WARN L261 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 81 conjunts are in the unsatisfiable core [2022-12-14 10:55:15,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:15,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 10:55:15,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:15,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-12-14 10:55:15,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-12-14 10:55:15,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 10:55:15,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 10:55:15,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:15,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:15,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2022-12-14 10:55:15,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:15,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:16,001 INFO L321 Elim1Store]: treesize reduction 128, result has 46.9 percent of original size [2022-12-14 10:55:16,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 125 treesize of output 216 [2022-12-14 10:55:16,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:16,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:16,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2022-12-14 10:55:16,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:16,166 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 0 case distinctions, treesize of input 104 treesize of output 69 [2022-12-14 10:55:16,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:16,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:16,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-12-14 10:55:16,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:16,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:16,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:16,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-12-14 10:55:16,678 INFO L321 Elim1Store]: treesize reduction 204, result has 27.4 percent of original size [2022-12-14 10:55:16,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 165 treesize of output 185 [2022-12-14 10:55:16,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:16,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 103 [2022-12-14 10:55:16,704 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:16,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 97 [2022-12-14 10:55:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:17,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:55:23,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:23,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261647174] [2022-12-14 10:55:23,824 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:55:23,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021595048] [2022-12-14 10:55:23,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021595048] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:55:23,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1899479461] [2022-12-14 10:55:23,825 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:55:23,825 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:55:23,826 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:55:23,826 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:55:23,826 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:55:23,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:23,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:23,902 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 10:55:23,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 10:55:23,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:23,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:23,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-12-14 10:55:23,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:23,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:23,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 10:55:23,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:23,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:24,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:24,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:24,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:24,067 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 10:55:24,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 355 treesize of output 353 [2022-12-14 10:55:24,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:24,230 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:55:24,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-12-14 10:55:24,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:24,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:24,282 INFO L321 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2022-12-14 10:55:24,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2022-12-14 10:55:24,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:24,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:24,306 INFO L321 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2022-12-14 10:55:24,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2022-12-14 10:55:24,351 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-12-14 10:55:24,364 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:55:26,463 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1140#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 10:55:26,463 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:55:26,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:55:26,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-12-14 10:55:26,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267694521] [2022-12-14 10:55:26,464 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 10:55:26,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 10:55:26,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:26,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 10:55:26,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1054, Unknown=1, NotChecked=0, Total=1190 [2022-12-14 10:55:26,465 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:27,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:27,136 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-12-14 10:55:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 10:55:27,136 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-12-14 10:55:27,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:27,138 INFO L225 Difference]: With dead ends: 37 [2022-12-14 10:55:27,138 INFO L226 Difference]: Without dead ends: 34 [2022-12-14 10:55:27,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=202, Invalid=1518, Unknown=2, NotChecked=0, Total=1722 [2022-12-14 10:55:27,139 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 33 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:27,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 68 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 153 Invalid, 2 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:55:27,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-14 10:55:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2022-12-14 10:55:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:55:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-12-14 10:55:27,145 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2022-12-14 10:55:27,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:27,145 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-12-14 10:55:27,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:27,145 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-12-14 10:55:27,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 10:55:27,146 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:27,146 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:27,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 10:55:27,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:27,347 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:27,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:27,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1683229357, now seen corresponding path program 5 times [2022-12-14 10:55:27,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:27,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22797161] [2022-12-14 10:55:27,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:27,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:27,370 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:55:27,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360267486] [2022-12-14 10:55:27,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:55:27,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:27,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:27,371 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:27,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 10:55:27,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 10:55:27,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:55:27,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:55:27,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:27,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:55:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:55:27,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:27,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22797161] [2022-12-14 10:55:27,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:55:27,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360267486] [2022-12-14 10:55:27,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360267486] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:55:27,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1493424101] [2022-12-14 10:55:27,539 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:55:27,539 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:55:27,539 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:55:27,539 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:55:27,539 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:55:27,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:27,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:27,602 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 10:55:27,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 10:55:27,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:27,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:27,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-12-14 10:55:27,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:27,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:27,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-12-14 10:55:27,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:27,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:27,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:27,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:27,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:27,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:27,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:27,733 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-12-14 10:55:27,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 362 treesize of output 348 [2022-12-14 10:55:27,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:27,786 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:55:27,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-12-14 10:55:27,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:27,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:27,853 INFO L321 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2022-12-14 10:55:27,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2022-12-14 10:55:27,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:27,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:27,878 INFO L321 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2022-12-14 10:55:27,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2022-12-14 10:55:27,924 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-12-14 10:55:27,940 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:55:29,492 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1402#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 10:55:29,492 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:55:29,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:55:29,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-12-14 10:55:29,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203177103] [2022-12-14 10:55:29,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:55:29,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 10:55:29,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:29,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 10:55:29,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2022-12-14 10:55:29,494 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:55:29,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:29,704 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2022-12-14 10:55:29,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 10:55:29,705 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-12-14 10:55:29,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:29,706 INFO L225 Difference]: With dead ends: 69 [2022-12-14 10:55:29,706 INFO L226 Difference]: Without dead ends: 61 [2022-12-14 10:55:29,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2022-12-14 10:55:29,707 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 69 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:29,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 72 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:55:29,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-14 10:55:29,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 38. [2022-12-14 10:55:29,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 10:55:29,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-12-14 10:55:29,718 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 21 [2022-12-14 10:55:29,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:29,718 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-12-14 10:55:29,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:55:29,718 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-12-14 10:55:29,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 10:55:29,719 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:29,719 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:29,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 10:55:29,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 10:55:29,921 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:29,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:29,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1995511985, now seen corresponding path program 6 times [2022-12-14 10:55:29,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:29,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245408542] [2022-12-14 10:55:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:29,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:29,939 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:55:29,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457522145] [2022-12-14 10:55:29,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 10:55:29,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:29,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:29,940 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:29,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 10:55:30,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 10:55:30,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:55:30,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:55:30,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:30,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:55:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:55:30,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:30,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245408542] [2022-12-14 10:55:30,099 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:55:30,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457522145] [2022-12-14 10:55:30,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457522145] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:55:30,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [384724702] [2022-12-14 10:55:30,100 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:55:30,100 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:55:30,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:55:30,101 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:55:30,101 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:55:30,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:30,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:30,166 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 10:55:30,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 10:55:30,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:30,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:30,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-12-14 10:55:30,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:30,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:30,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-12-14 10:55:30,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:30,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:30,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:30,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:30,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:30,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:30,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:30,283 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-12-14 10:55:30,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 362 treesize of output 348 [2022-12-14 10:55:30,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:30,337 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:55:30,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-12-14 10:55:30,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:30,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:30,384 INFO L321 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2022-12-14 10:55:30,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2022-12-14 10:55:30,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:30,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:30,412 INFO L321 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2022-12-14 10:55:30,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2022-12-14 10:55:30,452 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-12-14 10:55:30,465 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:55:31,827 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1717#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 10:55:31,827 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:55:31,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:55:31,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-12-14 10:55:31,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107739541] [2022-12-14 10:55:31,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:55:31,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 10:55:31,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:31,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 10:55:31,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-12-14 10:55:31,828 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:55:32,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:32,058 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2022-12-14 10:55:32,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 10:55:32,058 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-12-14 10:55:32,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:32,059 INFO L225 Difference]: With dead ends: 58 [2022-12-14 10:55:32,059 INFO L226 Difference]: Without dead ends: 55 [2022-12-14 10:55:32,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2022-12-14 10:55:32,060 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:32,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 73 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:55:32,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-12-14 10:55:32,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 39. [2022-12-14 10:55:32,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 10:55:32,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-12-14 10:55:32,068 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 21 [2022-12-14 10:55:32,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:32,068 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-12-14 10:55:32,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:55:32,068 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-12-14 10:55:32,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 10:55:32,069 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:32,069 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:32,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 10:55:32,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:32,271 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:32,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1731566751, now seen corresponding path program 7 times [2022-12-14 10:55:32,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:32,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896418124] [2022-12-14 10:55:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:32,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:32,316 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:55:32,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295082556] [2022-12-14 10:55:32,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 10:55:32,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:32,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:32,318 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:32,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 10:55:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:55:32,395 WARN L261 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 92 conjunts are in the unsatisfiable core [2022-12-14 10:55:32,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:32,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 10:55:32,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2022-12-14 10:55:32,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2022-12-14 10:55:32,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-12-14 10:55:32,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 55 [2022-12-14 10:55:32,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 63 [2022-12-14 10:55:32,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,875 INFO L321 Elim1Store]: treesize reduction 196, result has 46.9 percent of original size [2022-12-14 10:55:32,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 143 treesize of output 282 [2022-12-14 10:55:32,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,888 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 0 case distinctions, treesize of input 134 treesize of output 95 [2022-12-14 10:55:32,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:32,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 53 [2022-12-14 10:55:32,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:32,932 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:32,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 51 [2022-12-14 10:55:34,928 INFO L321 Elim1Store]: treesize reduction 288, result has 35.9 percent of original size [2022-12-14 10:55:34,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 434 treesize of output 418 [2022-12-14 10:55:34,959 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:34,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 274 treesize of output 289 [2022-12-14 10:55:34,987 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:34,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 246 treesize of output 275 [2022-12-14 10:55:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:37,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:55:39,265 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (.cse5 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (.cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (.cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (.cse11 (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse9 (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))) (and (forall ((|aux_mod_ULTIMATE.start_main_~index~0#1_40| Int) (|aux_div_ULTIMATE.start_main_~index~0#1_40| Int)) (or (= |aux_mod_ULTIMATE.start_main_~index~0#1_40| 0) (>= |aux_mod_ULTIMATE.start_main_~index~0#1_40| 2) (= (let ((.cse7 (* 4 |aux_mod_ULTIMATE.start_main_~index~0#1_40|)) (.cse8 (* |aux_div_ULTIMATE.start_main_~index~0#1_40| 8))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse10 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse7 .cse8) .cse11)))) (let ((.cse2 (store (select .cse6 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse8) .cse9))) (let ((.cse0 (select (store .cse6 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse2) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 .cse1) (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse2 .cse3) (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse2 .cse4) (select .cse0 .cse5)))))) 0) (> 0 |aux_mod_ULTIMATE.start_main_~index~0#1_40|))) (forall ((|aux_div_ULTIMATE.start_main_~index~0#1_40| Int)) (= (let ((.cse15 (* |aux_div_ULTIMATE.start_main_~index~0#1_40| 8))) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store .cse10 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse15) .cse9)))) (let ((.cse13 (store (select .cse14 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse15) .cse11))) (let ((.cse12 (select (store .cse14 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse13) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse12 .cse1) |c_ULTIMATE.start_main_~sum~0#1| (select .cse12 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse12 .cse5) (select .cse13 .cse4) (select .cse13 .cse3) (select .cse13 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))))) 0)))) is different from false [2022-12-14 10:55:39,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:39,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896418124] [2022-12-14 10:55:39,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:55:39,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295082556] [2022-12-14 10:55:39,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295082556] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:55:39,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1949547453] [2022-12-14 10:55:39,624 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:55:39,624 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:55:39,624 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:55:39,624 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:55:39,624 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:55:39,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:39,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:39,693 INFO L321 Elim1Store]: treesize reduction 80, result has 29.8 percent of original size [2022-12-14 10:55:39,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 57 [2022-12-14 10:55:39,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:39,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:39,756 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 10:55:39,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 10:55:39,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:39,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:39,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-12-14 10:55:39,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:39,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:39,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:39,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:39,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:39,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:39,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:39,864 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-12-14 10:55:39,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 362 treesize of output 348 [2022-12-14 10:55:39,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:39,913 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:55:39,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-12-14 10:55:39,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:39,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:39,959 INFO L321 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2022-12-14 10:55:39,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2022-12-14 10:55:39,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:39,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:39,980 INFO L321 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2022-12-14 10:55:39,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2022-12-14 10:55:40,033 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-12-14 10:55:40,047 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:55:41,974 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2002#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 10:55:41,974 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:55:41,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:55:41,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-12-14 10:55:41,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770088281] [2022-12-14 10:55:41,974 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 10:55:41,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 10:55:41,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:41,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 10:55:41,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=998, Unknown=1, NotChecked=64, Total=1190 [2022-12-14 10:55:41,976 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:43,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:43,173 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2022-12-14 10:55:43,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 10:55:43,173 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-12-14 10:55:43,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:43,174 INFO L225 Difference]: With dead ends: 55 [2022-12-14 10:55:43,174 INFO L226 Difference]: Without dead ends: 52 [2022-12-14 10:55:43,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=213, Invalid=1682, Unknown=1, NotChecked=84, Total=1980 [2022-12-14 10:55:43,174 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 31 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:43,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 108 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 263 Invalid, 3 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 10:55:43,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-12-14 10:55:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2022-12-14 10:55:43,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:55:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-12-14 10:55:43,191 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 22 [2022-12-14 10:55:43,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:43,191 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-12-14 10:55:43,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:55:43,192 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-12-14 10:55:43,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 10:55:43,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:43,192 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:43,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 10:55:43,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 10:55:43,394 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:43,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:43,395 INFO L85 PathProgramCache]: Analyzing trace with hash -2139199089, now seen corresponding path program 8 times [2022-12-14 10:55:43,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:43,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067630571] [2022-12-14 10:55:43,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:43,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:43,443 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:55:43,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827400961] [2022-12-14 10:55:43,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:55:43,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:43,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:43,445 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:43,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 10:55:43,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 10:55:43,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:55:43,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 10:55:43,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:43,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:55:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:55:43,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:55:43,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067630571] [2022-12-14 10:55:43,630 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:55:43,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827400961] [2022-12-14 10:55:43,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827400961] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:55:43,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [797997605] [2022-12-14 10:55:43,632 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:55:43,632 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:55:43,633 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:55:43,633 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:55:43,633 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:55:43,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:43,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:43,696 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 10:55:43,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 10:55:43,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:43,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:43,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-12-14 10:55:43,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:43,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:43,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 10:55:43,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:43,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:43,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:43,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:43,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:43,823 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-12-14 10:55:43,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 355 treesize of output 353 [2022-12-14 10:55:43,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:43,989 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:55:43,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-12-14 10:55:44,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:44,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:44,039 INFO L321 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2022-12-14 10:55:44,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2022-12-14 10:55:44,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:44,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:44,066 INFO L321 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2022-12-14 10:55:44,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2022-12-14 10:55:44,105 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-12-14 10:55:44,119 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:55:45,390 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2341#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 10:55:45,390 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:55:45,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:55:45,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-12-14 10:55:45,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282104003] [2022-12-14 10:55:45,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:55:45,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 10:55:45,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:55:45,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 10:55:45,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2022-12-14 10:55:45,391 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:55:45,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:55:45,742 INFO L93 Difference]: Finished difference Result 121 states and 141 transitions. [2022-12-14 10:55:45,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 10:55:45,743 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-12-14 10:55:45,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:55:45,743 INFO L225 Difference]: With dead ends: 121 [2022-12-14 10:55:45,743 INFO L226 Difference]: Without dead ends: 112 [2022-12-14 10:55:45,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 10:55:45,744 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 85 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:55:45,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 118 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:55:45,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-12-14 10:55:45,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 62. [2022-12-14 10:55:45,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-14 10:55:45,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2022-12-14 10:55:45,768 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 23 [2022-12-14 10:55:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:55:45,769 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2022-12-14 10:55:45,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:55:45,769 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2022-12-14 10:55:45,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 10:55:45,769 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:55:45,769 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:55:45,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 10:55:45,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 10:55:45,970 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:55:45,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:55:45,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1891722563, now seen corresponding path program 9 times [2022-12-14 10:55:45,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:55:45,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761069197] [2022-12-14 10:55:45,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:55:45,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:55:46,006 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:55:46,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372372766] [2022-12-14 10:55:46,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 10:55:46,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:46,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:46,008 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:46,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 10:55:46,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 10:55:46,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:55:46,120 WARN L261 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 117 conjunts are in the unsatisfiable core [2022-12-14 10:55:46,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:46,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 10:55:46,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:46,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2022-12-14 10:55:46,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2022-12-14 10:55:46,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-12-14 10:55:46,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 55 [2022-12-14 10:55:46,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 85 [2022-12-14 10:55:46,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:46,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:46,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:46,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:46,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:46,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:46,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 87 [2022-12-14 10:55:46,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:46,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:46,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:46,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:46,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:46,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:46,895 INFO L321 Elim1Store]: treesize reduction 264, result has 46.9 percent of original size [2022-12-14 10:55:46,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 16 case distinctions, treesize of input 161 treesize of output 348 [2022-12-14 10:55:47,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:47,272 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 0 case distinctions, treesize of input 164 treesize of output 121 [2022-12-14 10:55:47,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:47,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:47,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:47,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:47,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:47,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:47,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 62 [2022-12-14 10:55:47,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:47,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:47,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:47,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:47,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:47,326 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:47,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 60 [2022-12-14 10:55:49,103 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2022-12-14 10:55:49,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 333 treesize of output 209 [2022-12-14 10:55:49,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 199 [2022-12-14 10:55:49,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 191 [2022-12-14 10:55:49,160 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:49,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:56:02,524 WARN L233 SmtUtils]: Spent 7.84s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:56:02,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:56:02,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761069197] [2022-12-14 10:56:02,525 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:56:02,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372372766] [2022-12-14 10:56:02,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372372766] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:56:02,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1250893588] [2022-12-14 10:56:02,526 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 10:56:02,527 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:56:02,527 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:56:02,527 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:56:02,527 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:56:02,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:02,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:02,604 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-14 10:56:02,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-12-14 10:56:02,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:02,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:02,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-12-14 10:56:02,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:02,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:02,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-12-14 10:56:02,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:02,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:02,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:02,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:02,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:02,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:02,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:02,718 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-12-14 10:56:02,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 362 treesize of output 348 [2022-12-14 10:56:02,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:02,777 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:56:02,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-12-14 10:56:02,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:02,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:02,830 INFO L321 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2022-12-14 10:56:02,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2022-12-14 10:56:02,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:02,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:02,854 INFO L321 Elim1Store]: treesize reduction 17, result has 50.0 percent of original size [2022-12-14 10:56:02,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2022-12-14 10:56:02,896 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-12-14 10:56:02,909 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:56:04,948 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2777#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 10:56:04,949 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:56:04,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:56:04,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-12-14 10:56:04,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271573567] [2022-12-14 10:56:04,949 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-14 10:56:04,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 10:56:04,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:56:04,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 10:56:04,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1444, Unknown=5, NotChecked=0, Total=1640 [2022-12-14 10:56:04,951 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand has 20 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:56:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:56:06,419 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2022-12-14 10:56:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 10:56:06,420 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-12-14 10:56:06,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:56:06,421 INFO L225 Difference]: With dead ends: 82 [2022-12-14 10:56:06,421 INFO L226 Difference]: Without dead ends: 79 [2022-12-14 10:56:06,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=237, Invalid=1737, Unknown=6, NotChecked=0, Total=1980 [2022-12-14 10:56:06,422 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:56:06,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 132 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 378 Invalid, 3 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 10:56:06,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-12-14 10:56:06,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2022-12-14 10:56:06,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 10:56:06,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2022-12-14 10:56:06,447 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 24 [2022-12-14 10:56:06,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:56:06,447 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2022-12-14 10:56:06,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:56:06,447 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2022-12-14 10:56:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 10:56:06,447 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:56:06,447 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:56:06,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 10:56:06,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 10:56:06,648 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:56:06,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:56:06,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1197802463, now seen corresponding path program 1 times [2022-12-14 10:56:06,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:56:06,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432217209] [2022-12-14 10:56:06,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:56:06,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:56:06,671 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 10:56:06,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676167165] [2022-12-14 10:56:06,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:56:06,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:56:06,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:56:06,673 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:56:06,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f59b4346-6d30-435f-b1fd-0009a65c02e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 10:56:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:56:06,815 WARN L261 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 110 conjunts are in the unsatisfiable core [2022-12-14 10:56:06,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:56:06,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 10:56:06,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:06,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-12-14 10:56:06,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 10:56:06,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 10:56:06,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:06,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:06,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2022-12-14 10:56:07,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:07,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:07,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:07,344 INFO L321 Elim1Store]: treesize reduction 128, result has 46.9 percent of original size [2022-12-14 10:56:07,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 131 treesize of output 216 [2022-12-14 10:56:07,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:07,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:07,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2022-12-14 10:56:07,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:07,505 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 0 case distinctions, treesize of input 104 treesize of output 69 [2022-12-14 10:56:07,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:07,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:07,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-12-14 10:56:07,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:07,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:07,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-12-14 10:56:09,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:09,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:56:09,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:09,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:15,225 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 872 DAG size of output: 300 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 10:56:15,226 INFO L321 Elim1Store]: treesize reduction 4158, result has 20.7 percent of original size [2022-12-14 10:56:15,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 18 select indices, 18 select index equivalence classes, 2 disjoint index pairs (out of 153 index pairs), introduced 20 new quantified variables, introduced 191 case distinctions, treesize of input 530 treesize of output 1469 [2022-12-14 10:56:15,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:56:15,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 317 treesize of output 318 [2022-12-14 10:56:15,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:15,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:15,337 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:56:15,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 307 treesize of output 302 [2022-12-14 10:56:15,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:56:15,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 287 treesize of output 292 [2022-12-14 10:56:15,442 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:56:15,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 281 treesize of output 280 [2022-12-14 10:56:15,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:15,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:56:15,498 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:56:15,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 269 treesize of output 264 [2022-12-14 10:56:15,560 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:56:15,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 250