./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/brs4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/brs4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 727a45fc5966747e99c4394c0114e789db4ba39dd55af3d2c235925ac8282f92 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:49:14,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:49:14,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:49:14,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:49:14,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:49:14,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:49:14,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:49:14,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:49:14,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:49:14,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:49:14,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:49:14,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:49:14,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:49:14,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:49:14,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:49:14,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:49:14,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:49:14,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:49:14,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:49:14,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:49:14,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:49:14,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:49:14,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:49:14,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:49:14,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:49:14,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:49:14,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:49:14,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:49:14,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:49:14,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:49:14,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:49:14,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:49:14,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:49:14,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:49:14,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:49:14,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:49:14,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:49:14,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:49:14,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:49:14,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:49:14,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:49:14,531 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:49:14,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:49:14,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:49:14,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:49:14,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:49:14,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:49:14,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:49:14,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:49:14,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:49:14,549 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:49:14,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:49:14,549 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:49:14,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:49:14,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:49:14,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:49:14,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:49:14,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:49:14,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:49:14,550 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:49:14,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:49:14,550 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:49:14,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:49:14,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:49:14,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:49:14,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:49:14,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:49:14,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:49:14,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:49:14,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:49:14,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:49:14,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:49:14,552 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:49:14,552 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:49:14,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:49:14,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:49:14,552 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_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 727a45fc5966747e99c4394c0114e789db4ba39dd55af3d2c235925ac8282f92 [2021-12-07 00:49:14,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:49:14,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:49:14,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:49:14,745 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:49:14,746 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:49:14,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-fpi/brs4.c [2021-12-07 00:49:14,795 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/data/49e7a3a0f/09705878f6ae4596962d4d7d2ea49882/FLAG0eedfd1fc [2021-12-07 00:49:15,157 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:49:15,157 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/sv-benchmarks/c/array-fpi/brs4.c [2021-12-07 00:49:15,162 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/data/49e7a3a0f/09705878f6ae4596962d4d7d2ea49882/FLAG0eedfd1fc [2021-12-07 00:49:15,171 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/data/49e7a3a0f/09705878f6ae4596962d4d7d2ea49882 [2021-12-07 00:49:15,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:49:15,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:49:15,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:49:15,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:49:15,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:49:15,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:49:15" (1/1) ... [2021-12-07 00:49:15,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aaea5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:15, skipping insertion in model container [2021-12-07 00:49:15,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:49:15" (1/1) ... [2021-12-07 00:49:15,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:49:15,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:49:15,316 WARN L230 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_890b8863-aec9-4146-9518-c4c368282728/sv-benchmarks/c/array-fpi/brs4.c[587,600] [2021-12-07 00:49:15,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:49:15,338 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:49:15,348 WARN L230 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_890b8863-aec9-4146-9518-c4c368282728/sv-benchmarks/c/array-fpi/brs4.c[587,600] [2021-12-07 00:49:15,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:49:15,367 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:49:15,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:15 WrapperNode [2021-12-07 00:49:15,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:49:15,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:49:15,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:49:15,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:49:15,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:15" (1/1) ... [2021-12-07 00:49:15,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:15" (1/1) ... [2021-12-07 00:49:15,402 INFO L137 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2021-12-07 00:49:15,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:49:15,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:49:15,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:49:15,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:49:15,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:15" (1/1) ... [2021-12-07 00:49:15,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:15" (1/1) ... [2021-12-07 00:49:15,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:15" (1/1) ... [2021-12-07 00:49:15,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:15" (1/1) ... [2021-12-07 00:49:15,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:15" (1/1) ... [2021-12-07 00:49:15,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:15" (1/1) ... [2021-12-07 00:49:15,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:15" (1/1) ... [2021-12-07 00:49:15,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:49:15,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:49:15,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:49:15,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:49:15,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:15" (1/1) ... [2021-12-07 00:49:15,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:49:15,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:15,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:49:15,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:49:15,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:49:15,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:49:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:49:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:49:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 00:49:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:49:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:49:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:49:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:49:15,535 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:49:15,537 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:49:15,631 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:49:15,637 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:49:15,637 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-07 00:49:15,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:49:15 BoogieIcfgContainer [2021-12-07 00:49:15,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:49:15,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:49:15,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:49:15,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:49:15,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:49:15" (1/3) ... [2021-12-07 00:49:15,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f76140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:49:15, skipping insertion in model container [2021-12-07 00:49:15,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:49:15" (2/3) ... [2021-12-07 00:49:15,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f76140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:49:15, skipping insertion in model container [2021-12-07 00:49:15,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:49:15" (3/3) ... [2021-12-07 00:49:15,647 INFO L111 eAbstractionObserver]: Analyzing ICFG brs4.c [2021-12-07 00:49:15,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:49:15,653 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:49:15,687 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:49:15,693 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:49:15,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:49:15,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:15,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-07 00:49:15,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:15,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:49:15,711 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:15,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:15,717 INFO L85 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2021-12-07 00:49:15,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:15,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492566948] [2021-12-07 00:49:15,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:15,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:15,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:15,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492566948] [2021-12-07 00:49:15,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492566948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:49:15,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:49:15,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:49:15,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622203302] [2021-12-07 00:49:15,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:49:15,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:49:15,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:15,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:49:15,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:49:15,869 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:15,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:15,880 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2021-12-07 00:49:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:49:15,881 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-07 00:49:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:15,887 INFO L225 Difference]: With dead ends: 36 [2021-12-07 00:49:15,887 INFO L226 Difference]: Without dead ends: 16 [2021-12-07 00:49:15,889 INFO L932 BasicCegarLoop]: 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 [2021-12-07 00:49:15,892 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:15,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:49:15,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-12-07 00:49:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-12-07 00:49:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:15,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-12-07 00:49:15,915 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2021-12-07 00:49:15,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:15,916 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-12-07 00:49:15,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-12-07 00:49:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-07 00:49:15,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:15,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:49:15,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:49:15,917 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:15,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:15,917 INFO L85 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2021-12-07 00:49:15,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:15,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698348260] [2021-12-07 00:49:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:15,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:15,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:15,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698348260] [2021-12-07 00:49:15,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698348260] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:49:15,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:49:15,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:49:15,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898972135] [2021-12-07 00:49:15,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:49:15,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:49:15,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:15,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:49:15,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:49:15,981 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:16,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:16,028 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-12-07 00:49:16,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:49:16,029 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-07 00:49:16,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:16,029 INFO L225 Difference]: With dead ends: 33 [2021-12-07 00:49:16,029 INFO L226 Difference]: Without dead ends: 22 [2021-12-07 00:49:16,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:49:16,031 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:16,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 12 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:49:16,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-07 00:49:16,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-12-07 00:49:16,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-12-07 00:49:16,038 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2021-12-07 00:49:16,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:16,038 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-12-07 00:49:16,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:16,038 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-12-07 00:49:16,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-07 00:49:16,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:16,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:49:16,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:49:16,040 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:16,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:16,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2021-12-07 00:49:16,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:16,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144512829] [2021-12-07 00:49:16,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:16,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:49:16,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:16,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144512829] [2021-12-07 00:49:16,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144512829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:49:16,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:49:16,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:49:16,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395841832] [2021-12-07 00:49:16,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:49:16,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:49:16,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:16,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:49:16,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:49:16,154 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:16,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:16,192 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-12-07 00:49:16,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:49:16,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-07 00:49:16,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:16,193 INFO L225 Difference]: With dead ends: 27 [2021-12-07 00:49:16,193 INFO L226 Difference]: Without dead ends: 23 [2021-12-07 00:49:16,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:49:16,195 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:16,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:49:16,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-07 00:49:16,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-12-07 00:49:16,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-12-07 00:49:16,199 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2021-12-07 00:49:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:16,199 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-12-07 00:49:16,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-12-07 00:49:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-07 00:49:16,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:16,200 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:49:16,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:49:16,200 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:16,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2021-12-07 00:49:16,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:16,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194508793] [2021-12-07 00:49:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:16,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:16,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:16,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194508793] [2021-12-07 00:49:16,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194508793] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:49:16,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286050024] [2021-12-07 00:49:16,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:16,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:49:16,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:16,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:49:16,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:49:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:16,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:49:16,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:16,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:49:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:16,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286050024] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:49:16,448 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:49:16,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-07 00:49:16,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046173391] [2021-12-07 00:49:16,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:49:16,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 00:49:16,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:16,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:49:16,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:49:16,450 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:16,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:16,530 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-12-07 00:49:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:49:16,531 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-07 00:49:16,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:16,532 INFO L225 Difference]: With dead ends: 43 [2021-12-07 00:49:16,532 INFO L226 Difference]: Without dead ends: 29 [2021-12-07 00:49:16,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:49:16,534 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:16,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 32 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:49:16,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-07 00:49:16,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-12-07 00:49:16,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:16,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-12-07 00:49:16,539 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2021-12-07 00:49:16,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:16,539 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-12-07 00:49:16,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:16,540 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-12-07 00:49:16,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-07 00:49:16,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:16,540 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:49:16,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:49:16,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:49:16,742 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:16,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:16,744 INFO L85 PathProgramCache]: Analyzing trace with hash 168847774, now seen corresponding path program 1 times [2021-12-07 00:49:16,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:16,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420664382] [2021-12-07 00:49:16,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:16,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:17,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:17,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420664382] [2021-12-07 00:49:17,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420664382] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:49:17,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466420205] [2021-12-07 00:49:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:17,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:49:17,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:17,175 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:49:17,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:49:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:17,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-07 00:49:17,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:17,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-07 00:49:17,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 11 [2021-12-07 00:49:17,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 22 [2021-12-07 00:49:17,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:49:17,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 41 treesize of output 28 [2021-12-07 00:49:17,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2021-12-07 00:49:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:17,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:49:25,029 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_73 Int)) (or (<= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_73)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) v_ArrVal_73) (* 4 c_~N~0)) (< 0 v_ArrVal_73))) is different from false [2021-12-07 00:49:25,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 210 [2021-12-07 00:49:25,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-07 00:49:25,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466420205] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:49:25,206 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:49:25,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2021-12-07 00:49:25,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374352965] [2021-12-07 00:49:25,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:49:25,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 00:49:25,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:25,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 00:49:25,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=4, NotChecked=44, Total=600 [2021-12-07 00:49:25,207 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:25,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:25,386 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2021-12-07 00:49:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:49:25,391 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-07 00:49:25,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:25,391 INFO L225 Difference]: With dead ends: 56 [2021-12-07 00:49:25,392 INFO L226 Difference]: Without dead ends: 36 [2021-12-07 00:49:25,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=4, NotChecked=50, Total=756 [2021-12-07 00:49:25,393 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:25,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 60 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 167 Invalid, 0 Unknown, 98 Unchecked, 0.1s Time] [2021-12-07 00:49:25,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-07 00:49:25,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2021-12-07 00:49:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-12-07 00:49:25,400 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 23 [2021-12-07 00:49:25,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:25,400 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-12-07 00:49:25,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-12-07 00:49:25,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-07 00:49:25,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:25,401 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:49:25,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:49:25,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:49:25,602 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:25,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:25,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1961352373, now seen corresponding path program 2 times [2021-12-07 00:49:25,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:25,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359162962] [2021-12-07 00:49:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:25,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:25,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:25,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359162962] [2021-12-07 00:49:25,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359162962] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:49:25,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084571134] [2021-12-07 00:49:25,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:49:25,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:49:25,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:25,669 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:49:25,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:49:25,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:49:25,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:49:25,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 00:49:25,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:25,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:49:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:25,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084571134] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:49:25,814 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:49:25,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-12-07 00:49:25,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470686663] [2021-12-07 00:49:25,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:49:25,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 00:49:25,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:25,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 00:49:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:49:25,816 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:25,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:25,919 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2021-12-07 00:49:25,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:49:25,920 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-07 00:49:25,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:25,920 INFO L225 Difference]: With dead ends: 79 [2021-12-07 00:49:25,920 INFO L226 Difference]: Without dead ends: 50 [2021-12-07 00:49:25,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-12-07 00:49:25,922 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 47 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:25,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 33 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:49:25,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-07 00:49:25,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2021-12-07 00:49:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2021-12-07 00:49:25,926 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 26 [2021-12-07 00:49:25,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:25,926 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2021-12-07 00:49:25,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:25,927 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2021-12-07 00:49:25,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-07 00:49:25,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:25,928 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:49:25,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:49:26,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-07 00:49:26,129 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:26,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:26,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1198950171, now seen corresponding path program 3 times [2021-12-07 00:49:26,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:26,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450910183] [2021-12-07 00:49:26,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:26,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:26,746 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:26,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:26,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450910183] [2021-12-07 00:49:26,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450910183] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:49:26,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173843536] [2021-12-07 00:49:26,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:49:26,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:49:26,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:26,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:49:26,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:49:26,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-07 00:49:26,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:49:26,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-07 00:49:26,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:26,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-07 00:49:26,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 11 [2021-12-07 00:49:26,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:26,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-12-07 00:49:29,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:29,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 35 treesize of output 37 [2021-12-07 00:49:29,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:29,704 INFO L354 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2021-12-07 00:49:29,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 59 treesize of output 56 [2021-12-07 00:49:29,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:29,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:29,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:29,880 INFO L354 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2021-12-07 00:49:29,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 62 [2021-12-07 00:49:30,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:49:30,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:30,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:49:30,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 15 [2021-12-07 00:49:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:49:30,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:49:40,720 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-07 00:49:40,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1367 treesize of output 1 [2021-12-07 00:49:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:49:40,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173843536] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:49:40,728 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:49:40,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 18] total 52 [2021-12-07 00:49:40,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866262414] [2021-12-07 00:49:40,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:49:40,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-07 00:49:40,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:40,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-07 00:49:40,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=2213, Unknown=7, NotChecked=0, Total=2652 [2021-12-07 00:49:40,731 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 52 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:41,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:41,536 INFO L93 Difference]: Finished difference Result 107 states and 130 transitions. [2021-12-07 00:49:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-07 00:49:41,537 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-07 00:49:41,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:41,538 INFO L225 Difference]: With dead ends: 107 [2021-12-07 00:49:41,538 INFO L226 Difference]: Without dead ends: 74 [2021-12-07 00:49:41,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1669 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=799, Invalid=4024, Unknown=7, NotChecked=0, Total=4830 [2021-12-07 00:49:41,541 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:41,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 92 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 163 Invalid, 0 Unknown, 277 Unchecked, 0.1s Time] [2021-12-07 00:49:41,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-07 00:49:41,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2021-12-07 00:49:41,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 83 transitions. [2021-12-07 00:49:41,550 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 83 transitions. Word has length 29 [2021-12-07 00:49:41,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:41,550 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 83 transitions. [2021-12-07 00:49:41,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:41,550 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2021-12-07 00:49:41,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-07 00:49:41,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:41,551 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:49:41,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:49:41,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:49:41,752 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:41,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:41,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1892735660, now seen corresponding path program 4 times [2021-12-07 00:49:41,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:41,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028319488] [2021-12-07 00:49:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:41,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:41,809 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-07 00:49:41,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:41,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028319488] [2021-12-07 00:49:41,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028319488] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:49:41,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885822183] [2021-12-07 00:49:41,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:49:41,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:49:41,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:41,810 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:49:41,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:49:41,845 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:49:41,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:49:41,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:49:41,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:41,878 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 00:49:41,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:49:41,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885822183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:49:41,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:49:41,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2021-12-07 00:49:41,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248295289] [2021-12-07 00:49:41,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:49:41,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:49:41,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:41,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:49:41,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:49:41,880 INFO L87 Difference]: Start difference. First operand 70 states and 83 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:41,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:41,909 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2021-12-07 00:49:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:49:41,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-07 00:49:41,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:41,910 INFO L225 Difference]: With dead ends: 80 [2021-12-07 00:49:41,910 INFO L226 Difference]: Without dead ends: 62 [2021-12-07 00:49:41,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:49:41,911 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:41,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 12 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:49:41,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-07 00:49:41,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2021-12-07 00:49:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2021-12-07 00:49:41,917 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 32 [2021-12-07 00:49:41,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:41,917 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2021-12-07 00:49:41,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2021-12-07 00:49:41,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-07 00:49:41,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:41,918 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:49:41,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 00:49:42,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:49:42,120 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:42,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:42,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1382290761, now seen corresponding path program 5 times [2021-12-07 00:49:42,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:42,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106294306] [2021-12-07 00:49:42,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:42,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:42,280 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:42,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:42,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106294306] [2021-12-07 00:49:42,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106294306] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:49:42,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917575079] [2021-12-07 00:49:42,280 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 00:49:42,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:49:42,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:42,281 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:49:42,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 00:49:42,322 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-07 00:49:42,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:49:42,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 00:49:42,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 00:49:42,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:49:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 00:49:42,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917575079] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:49:42,448 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:49:42,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 19 [2021-12-07 00:49:42,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934036225] [2021-12-07 00:49:42,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:49:42,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-07 00:49:42,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:42,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-07 00:49:42,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:49:42,449 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:42,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:42,803 INFO L93 Difference]: Finished difference Result 122 states and 137 transitions. [2021-12-07 00:49:42,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 00:49:42,804 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-07 00:49:42,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:42,804 INFO L225 Difference]: With dead ends: 122 [2021-12-07 00:49:42,804 INFO L226 Difference]: Without dead ends: 93 [2021-12-07 00:49:42,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=950, Unknown=0, NotChecked=0, Total=1190 [2021-12-07 00:49:42,805 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 164 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:42,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 87 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:49:42,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-07 00:49:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 51. [2021-12-07 00:49:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.12) internal successors, (56), 50 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-12-07 00:49:42,813 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 32 [2021-12-07 00:49:42,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:42,813 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-12-07 00:49:42,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:42,813 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-12-07 00:49:42,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-07 00:49:42,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:42,814 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:49:42,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-07 00:49:43,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-07 00:49:43,016 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:43,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:43,017 INFO L85 PathProgramCache]: Analyzing trace with hash -283133381, now seen corresponding path program 6 times [2021-12-07 00:49:43,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:43,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764498622] [2021-12-07 00:49:43,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:43,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:43,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:43,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764498622] [2021-12-07 00:49:43,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764498622] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:49:43,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738680785] [2021-12-07 00:49:43,171 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 00:49:43,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:49:43,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:43,172 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:49:43,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 00:49:43,260 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-07 00:49:43,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:49:43,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 00:49:43,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:43,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:49:43,404 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:43,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738680785] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:49:43,404 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:49:43,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2021-12-07 00:49:43,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408183935] [2021-12-07 00:49:43,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:49:43,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-07 00:49:43,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:49:43,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-07 00:49:43,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2021-12-07 00:49:43,406 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:49:43,539 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2021-12-07 00:49:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-07 00:49:43,540 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-07 00:49:43,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:49:43,540 INFO L225 Difference]: With dead ends: 94 [2021-12-07 00:49:43,540 INFO L226 Difference]: Without dead ends: 73 [2021-12-07 00:49:43,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2021-12-07 00:49:43,541 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:49:43,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 30 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:49:43,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-07 00:49:43,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2021-12-07 00:49:43,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.098360655737705) internal successors, (67), 61 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:43,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2021-12-07 00:49:43,550 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 35 [2021-12-07 00:49:43,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:49:43,550 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2021-12-07 00:49:43,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:49:43,551 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2021-12-07 00:49:43,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-07 00:49:43,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:49:43,551 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:49:43,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-07 00:49:43,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 00:49:43,753 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:49:43,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:49:43,754 INFO L85 PathProgramCache]: Analyzing trace with hash 456261758, now seen corresponding path program 7 times [2021-12-07 00:49:43,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:49:43,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082111280] [2021-12-07 00:49:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:49:43,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:49:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:44,431 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:44,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:49:44,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082111280] [2021-12-07 00:49:44,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082111280] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:49:44,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723370607] [2021-12-07 00:49:44,431 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 00:49:44,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:49:44,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:49:44,432 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:49:44,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 00:49:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:49:44,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-07 00:49:44,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:49:44,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-07 00:49:44,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 11 [2021-12-07 00:49:44,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:44,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-12-07 00:49:44,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:44,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:44,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:44,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2021-12-07 00:49:44,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:44,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:44,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:44,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2021-12-07 00:49:44,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:44,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:44,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:44,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:44,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:49:44,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 59 [2021-12-07 00:49:45,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:45,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:45,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:45,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:45,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:49:45,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 56 [2021-12-07 00:49:45,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:45,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:45,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:49:45,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 50 [2021-12-07 00:49:45,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:45,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:49:45,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 55 treesize of output 19 [2021-12-07 00:49:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:49:45,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:50:54,883 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-12-07 00:50:54,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2700 treesize of output 2664 [2021-12-07 00:54:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 42 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:54:12,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723370607] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:54:12,589 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:54:12,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 53 [2021-12-07 00:54:12,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676053056] [2021-12-07 00:54:12,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:54:12,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-07 00:54:12,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:54:12,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-07 00:54:12,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=2363, Unknown=29, NotChecked=0, Total=2756 [2021-12-07 00:54:12,591 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 53 states, 53 states have (on average 1.679245283018868) internal successors, (89), 53 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:54:19,180 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_323 Int) (v_ArrVal_321 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_319 Int) (v_ArrVal_316 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_316)))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (< (+ v_ArrVal_319 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_319)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) v_ArrVal_321) (< (+ v_ArrVal_321 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_321)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) v_ArrVal_323) (<= (+ v_ArrVal_323 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_323)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12))) (* 4 c_~N~0)) (< 0 v_ArrVal_316) (< 0 v_ArrVal_319))))) (forall ((v_ArrVal_323 Int) (v_ArrVal_321 Int) (~N~0 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_319 Int) (v_ArrVal_316 Int) (v_ArrVal_314 Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4) v_ArrVal_314) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4 4) v_ArrVal_316))))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (< (+ v_ArrVal_319 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_319)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) v_ArrVal_321) (<= (+ v_ArrVal_323 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_323)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12))) (* 4 ~N~0)) (< (+ v_ArrVal_321 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_321)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) v_ArrVal_323) (< 0 v_ArrVal_314) (< 0 v_ArrVal_316) (< 0 v_ArrVal_319) (<= ~N~0 (+ |c_ULTIMATE.start_main_~i~0#1| 1))))))) is different from false [2021-12-07 00:54:19,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:54:19,793 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-12-07 00:54:19,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-07 00:54:19,794 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.679245283018868) internal successors, (89), 53 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-07 00:54:19,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:54:19,794 INFO L225 Difference]: With dead ends: 67 [2021-12-07 00:54:19,794 INFO L226 Difference]: Without dead ends: 49 [2021-12-07 00:54:19,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1537 ImplicationChecksByTransitivity, 74.9s TimeCoverageRelationStatistics Valid=594, Invalid=3802, Unknown=30, NotChecked=130, Total=4556 [2021-12-07 00:54:19,796 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:54:19,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 102 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 289 Invalid, 0 Unknown, 252 Unchecked, 0.2s Time] [2021-12-07 00:54:19,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-07 00:54:19,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2021-12-07 00:54:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:54:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-12-07 00:54:19,800 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 35 [2021-12-07 00:54:19,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:54:19,800 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-12-07 00:54:19,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.679245283018868) internal successors, (89), 53 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:54:19,801 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-12-07 00:54:19,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-07 00:54:19,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:54:19,801 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:54:19,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 00:54:20,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:54:20,003 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:54:20,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:54:20,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2075867632, now seen corresponding path program 8 times [2021-12-07 00:54:20,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:54:20,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201052017] [2021-12-07 00:54:20,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:54:20,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:54:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:54:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:54:20,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:54:20,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201052017] [2021-12-07 00:54:20,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201052017] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:54:20,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012415181] [2021-12-07 00:54:20,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:54:20,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:54:20,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:54:20,099 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:54:20,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 00:54:20,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:54:20,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:54:20,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:54:20,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:54:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:54:20,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:54:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:54:20,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012415181] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:54:20,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:54:20,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2021-12-07 00:54:20,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748145791] [2021-12-07 00:54:20,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:54:20,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-07 00:54:20,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:54:20,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-07 00:54:20,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-12-07 00:54:20,300 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:54:20,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:54:20,456 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-12-07 00:54:20,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 00:54:20,456 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-07 00:54:20,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:54:20,457 INFO L225 Difference]: With dead ends: 57 [2021-12-07 00:54:20,457 INFO L226 Difference]: Without dead ends: 53 [2021-12-07 00:54:20,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2021-12-07 00:54:20,458 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 59 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:54:20,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 29 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:54:20,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-07 00:54:20,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2021-12-07 00:54:20,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:54:20,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2021-12-07 00:54:20,463 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 38 [2021-12-07 00:54:20,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:54:20,463 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-12-07 00:54:20,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:54:20,464 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2021-12-07 00:54:20,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-07 00:54:20,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:54:20,464 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:54:20,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 00:54:20,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-07 00:54:20,666 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:54:20,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:54:20,668 INFO L85 PathProgramCache]: Analyzing trace with hash 534813113, now seen corresponding path program 9 times [2021-12-07 00:54:20,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:54:20,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634140478] [2021-12-07 00:54:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:54:20,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:54:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:54:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:54:21,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:54:21,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634140478] [2021-12-07 00:54:21,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634140478] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:54:21,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507800015] [2021-12-07 00:54:21,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:54:21,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:54:21,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:54:21,704 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:54:21,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_890b8863-aec9-4146-9518-c4c368282728/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 00:54:21,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-07 00:54:21,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:54:21,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-07 00:54:21,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:54:21,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-07 00:54:21,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:21,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 24 [2021-12-07 00:54:22,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 39 [2021-12-07 00:54:22,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 54 [2021-12-07 00:54:22,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 56 treesize of output 64 [2021-12-07 00:54:22,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 72 [2021-12-07 00:54:22,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:22,808 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-12-07 00:54:22,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 83 [2021-12-07 00:54:23,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,074 INFO L354 Elim1Store]: treesize reduction 149, result has 0.7 percent of original size [2021-12-07 00:54:23,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 97 treesize of output 97 [2021-12-07 00:54:23,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:23,436 INFO L354 Elim1Store]: treesize reduction 122, result has 0.8 percent of original size [2021-12-07 00:54:23,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 95 treesize of output 100 [2021-12-07 00:54:26,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:26,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:26,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:26,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:26,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:54:26,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:26,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:26,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:26,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:26,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:26,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:26,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:26,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:54:26,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:54:26,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:54:26,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 23 [2021-12-07 00:54:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:54:26,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:55:36,548 WARN L838 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (or (forall ((v_ArrVal_433 Int) (v_ArrVal_430 Int) (|v_ULTIMATE.start_main_~i~0#1_134| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_428 Int) (v_ArrVal_437 Int) (v_ArrVal_435 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_428)))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse2 (* |v_ULTIMATE.start_main_~i~0#1_134| 4))) (or (<= (+ v_ArrVal_437 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_437)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2))) (* 4 ~N~0)) (<= ~N~0 (+ 2 |v_ULTIMATE.start_main_~i~0#1_134|)) (< (+ v_ArrVal_430 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_430)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) v_ArrVal_433) (< (+ v_ArrVal_435 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_435)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4))) v_ArrVal_437) (< (+ 3 |v_ULTIMATE.start_main_~i~0#1_134|) ~N~0) (< 4 v_ArrVal_428) (< 0 v_ArrVal_430) (< (+ v_ArrVal_433 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_433)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2))) v_ArrVal_435))))) (<= ~N~0 |c_ULTIMATE.start_main_~i~0#1|) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) ~N~0))) is different from false [2021-12-07 00:55:39,157 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_433 Int) (v_ArrVal_430 Int) (|v_ULTIMATE.start_main_~i~0#1_134| Int) (~N~0 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_428 Int) (v_ArrVal_437 Int) (v_ArrVal_435 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4) v_ArrVal_428)))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse2 (* |v_ULTIMATE.start_main_~i~0#1_134| 4))) (or (<= ~N~0 (+ 2 |v_ULTIMATE.start_main_~i~0#1_134|)) (< (+ v_ArrVal_435 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_435)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4))) v_ArrVal_437) (< (+ v_ArrVal_433 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_433)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2))) v_ArrVal_435) (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) ~N~0) (< (+ 3 |v_ULTIMATE.start_main_~i~0#1_134|) ~N~0) (< (+ v_ArrVal_430 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_430)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) v_ArrVal_433) (< 4 v_ArrVal_428) (< 0 v_ArrVal_430) (<= (+ v_ArrVal_437 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_437)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2))) (* 4 ~N~0)) (<= ~N~0 (+ |c_ULTIMATE.start_main_~i~0#1| 1)))))) is different from false [2021-12-07 00:55:42,101 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_433 Int) (v_ArrVal_430 Int) (|v_ULTIMATE.start_main_~i~0#1_134| Int) (~N~0 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_428 Int) (v_ArrVal_427 Int) (v_ArrVal_437 Int) (v_ArrVal_435 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3) v_ArrVal_427) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 4) v_ArrVal_428))))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse2 (* |v_ULTIMATE.start_main_~i~0#1_134| 4))) (or (< (+ v_ArrVal_430 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_430)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) v_ArrVal_433) (<= (+ v_ArrVal_437 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_437)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2))) (* 4 ~N~0)) (<= ~N~0 (+ 2 |v_ULTIMATE.start_main_~i~0#1_134|)) (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) ~N~0) (< (+ 3 |v_ULTIMATE.start_main_~i~0#1_134|) ~N~0) (< 4 v_ArrVal_428) (< 0 v_ArrVal_430) (< (+ v_ArrVal_435 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_435)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4))) v_ArrVal_437) (< (+ v_ArrVal_433 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_433)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2))) v_ArrVal_435) (<= ~N~0 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (< 0 v_ArrVal_427))))) is different from false [2021-12-07 00:55:46,203 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_433 Int) (v_ArrVal_430 Int) (|v_ULTIMATE.start_main_~i~0#1_134| Int) (~N~0 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_428 Int) (v_ArrVal_427 Int) (v_ArrVal_437 Int) (v_ArrVal_435 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 4) v_ArrVal_427) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse3) v_ArrVal_428))))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse2 (* |v_ULTIMATE.start_main_~i~0#1_134| 4))) (or (<= (+ v_ArrVal_437 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_437)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2))) (* 4 ~N~0)) (<= ~N~0 (+ 2 |v_ULTIMATE.start_main_~i~0#1_134|)) (< (+ v_ArrVal_435 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_435)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4))) v_ArrVal_437) (<= ~N~0 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (< (+ v_ArrVal_430 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_430)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) v_ArrVal_433) (< (+ 3 |v_ULTIMATE.start_main_~i~0#1_134|) ~N~0) (< 4 v_ArrVal_428) (< 0 v_ArrVal_430) (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) ~N~0) (< (+ v_ArrVal_433 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_433)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2))) v_ArrVal_435) (< 0 v_ArrVal_427))))) is different from false [2021-12-07 00:56:06,220 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_140| Int)) (or (forall ((v_ArrVal_433 Int) (v_ArrVal_430 Int) (|v_ULTIMATE.start_main_~i~0#1_134| Int) (~N~0 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_428 Int) (v_ArrVal_427 Int) (v_ArrVal_437 Int) (v_ArrVal_425 Int) (v_ArrVal_435 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse3 (* |v_ULTIMATE.start_main_~i~0#1_140| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3) v_ArrVal_425) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 4) v_ArrVal_427) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 8) v_ArrVal_428))))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse2 (* |v_ULTIMATE.start_main_~i~0#1_134| 4))) (or (< (+ v_ArrVal_430 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_430)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) v_ArrVal_433) (<= ~N~0 (+ 2 |v_ULTIMATE.start_main_~i~0#1_134|)) (< (+ v_ArrVal_433 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_433)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2))) v_ArrVal_435) (< (+ v_ArrVal_435 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_435)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4))) v_ArrVal_437) (<= (+ v_ArrVal_437 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_437)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2))) (* 4 ~N~0)) (<= ~N~0 (+ 2 |v_ULTIMATE.start_main_~i~0#1_140|)) (< (+ 3 |v_ULTIMATE.start_main_~i~0#1_134|) ~N~0) (< 4 v_ArrVal_428) (< (+ 3 |v_ULTIMATE.start_main_~i~0#1_140|) ~N~0) (< 0 v_ArrVal_425) (< 0 v_ArrVal_430) (< 0 v_ArrVal_427))))) (< |v_ULTIMATE.start_main_~i~0#1_140| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-07 00:56:06,391 INFO L354 Elim1Store]: treesize reduction 85, result has 12.4 percent of original size [2021-12-07 00:56:06,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1451617 treesize of output 1439777