./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sina2.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_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/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_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sina2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/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_b42ea86d-13a6-4d21-9f23-d472967b6801/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 1ea1eb4a8af9eb0da04a9f2b25d1b98ecd98ff3b6d87ba0d8e53000f12b8adcc --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:18:08,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:18:08,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:18:08,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:18:08,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:18:08,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:18:08,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:18:08,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:18:08,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:18:08,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:18:08,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:18:08,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:18:08,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:18:08,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:18:08,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:18:08,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:18:08,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:18:08,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:18:08,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:18:08,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:18:08,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:18:08,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:18:08,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:18:08,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:18:08,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:18:08,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:18:08,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:18:08,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:18:08,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:18:08,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:18:08,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:18:08,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:18:08,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:18:08,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:18:08,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:18:08,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:18:08,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:18:08,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:18:08,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:18:08,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:18:08,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:18:08,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:18:08,323 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:18:08,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:18:08,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:18:08,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:18:08,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:18:08,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:18:08,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:18:08,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:18:08,325 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:18:08,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:18:08,325 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:18:08,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:18:08,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:18:08,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:18:08,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:18:08,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:18:08,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:18:08,326 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:18:08,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:18:08,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:18:08,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:18:08,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:18:08,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:18:08,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:18:08,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:18:08,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:18:08,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:18:08,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:18:08,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:18:08,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:18:08,328 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:18:08,328 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:18:08,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:18:08,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:18:08,328 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_b42ea86d-13a6-4d21-9f23-d472967b6801/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ea1eb4a8af9eb0da04a9f2b25d1b98ecd98ff3b6d87ba0d8e53000f12b8adcc [2021-12-07 01:18:08,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:18:08,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:18:08,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:18:08,526 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:18:08,526 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:18:08,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-fpi/sina2.c [2021-12-07 01:18:08,570 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/data/7ff1f0dcb/f8ff2497743a409dbfe0df265ae292e5/FLAGcec456c8a [2021-12-07 01:18:08,918 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:18:08,918 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/sv-benchmarks/c/array-fpi/sina2.c [2021-12-07 01:18:08,923 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/data/7ff1f0dcb/f8ff2497743a409dbfe0df265ae292e5/FLAGcec456c8a [2021-12-07 01:18:08,933 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/data/7ff1f0dcb/f8ff2497743a409dbfe0df265ae292e5 [2021-12-07 01:18:08,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:18:08,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:18:08,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:18:08,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:18:08,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:18:08,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:18:08" (1/1) ... [2021-12-07 01:18:08,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a424485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:18:08, skipping insertion in model container [2021-12-07 01:18:08,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:18:08" (1/1) ... [2021-12-07 01:18:08,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:18:08,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:18:09,069 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_b42ea86d-13a6-4d21-9f23-d472967b6801/sv-benchmarks/c/array-fpi/sina2.c[588,601] [2021-12-07 01:18:09,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:18:09,088 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:18:09,097 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_b42ea86d-13a6-4d21-9f23-d472967b6801/sv-benchmarks/c/array-fpi/sina2.c[588,601] [2021-12-07 01:18:09,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:18:09,113 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:18:09,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:18:09 WrapperNode [2021-12-07 01:18:09,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:18:09,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:18:09,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:18:09,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:18:09,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:18:09" (1/1) ... [2021-12-07 01:18:09,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:18:09" (1/1) ... [2021-12-07 01:18:09,142 INFO L137 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 84 [2021-12-07 01:18:09,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:18:09,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:18:09,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:18:09,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:18:09,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:18:09" (1/1) ... [2021-12-07 01:18:09,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:18:09" (1/1) ... [2021-12-07 01:18:09,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:18:09" (1/1) ... [2021-12-07 01:18:09,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:18:09" (1/1) ... [2021-12-07 01:18:09,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:18:09" (1/1) ... [2021-12-07 01:18:09,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:18:09" (1/1) ... [2021-12-07 01:18:09,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:18:09" (1/1) ... [2021-12-07 01:18:09,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:18:09,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:18:09,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:18:09,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:18:09,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:18:09" (1/1) ... [2021-12-07 01:18:09,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:18:09,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:18:09,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:18:09,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:18:09,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:18:09,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:18:09,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:18:09,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:18:09,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 01:18:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:18:09,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:18:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 01:18:09,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:18:09,278 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:18:09,279 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:18:09,372 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:18:09,376 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:18:09,377 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-07 01:18:09,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:18:09 BoogieIcfgContainer [2021-12-07 01:18:09,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:18:09,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:18:09,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:18:09,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:18:09,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:18:08" (1/3) ... [2021-12-07 01:18:09,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724b9b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:18:09, skipping insertion in model container [2021-12-07 01:18:09,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:18:09" (2/3) ... [2021-12-07 01:18:09,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724b9b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:18:09, skipping insertion in model container [2021-12-07 01:18:09,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:18:09" (3/3) ... [2021-12-07 01:18:09,387 INFO L111 eAbstractionObserver]: Analyzing ICFG sina2.c [2021-12-07 01:18:09,392 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:18:09,392 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:18:09,428 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:18:09,434 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 01:18:09,435 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:18:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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 01:18:09,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-07 01:18:09,453 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:18:09,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:18:09,454 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:18:09,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:18:09,460 INFO L85 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2021-12-07 01:18:09,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:18:09,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103841518] [2021-12-07 01:18:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:18:09,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:18:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:18:09,608 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 01:18:09,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:18:09,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103841518] [2021-12-07 01:18:09,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103841518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:18:09,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:18:09,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:18:09,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869335995] [2021-12-07 01:18:09,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:18:09,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:18:09,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:18:09,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:18:09,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:18:09,649 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 01:18:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:18:09,664 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2021-12-07 01:18:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:18:09,666 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2021-12-07 01:18:09,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:18:09,672 INFO L225 Difference]: With dead ends: 44 [2021-12-07 01:18:09,672 INFO L226 Difference]: Without dead ends: 20 [2021-12-07 01:18:09,674 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 01:18:09,678 INFO L933 BasicCegarLoop]: 28 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, 28 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 01:18:09,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:18:09,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-12-07 01:18:09,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-12-07 01:18:09,703 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 01:18:09,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-12-07 01:18:09,705 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2021-12-07 01:18:09,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:18:09,705 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-12-07 01:18:09,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 01:18:09,706 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-12-07 01:18:09,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-07 01:18:09,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:18:09,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:18:09,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:18:09,707 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:18:09,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:18:09,708 INFO L85 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2021-12-07 01:18:09,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:18:09,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210858365] [2021-12-07 01:18:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:18:09,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:18:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:18:09,789 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 01:18:09,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:18:09,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210858365] [2021-12-07 01:18:09,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210858365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:18:09,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:18:09,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:18:09,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292321830] [2021-12-07 01:18:09,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:18:09,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:18:09,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:18:09,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:18:09,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:18:09,793 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 01:18:09,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:18:09,851 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2021-12-07 01:18:09,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:18:09,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-12-07 01:18:09,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:18:09,852 INFO L225 Difference]: With dead ends: 45 [2021-12-07 01:18:09,852 INFO L226 Difference]: Without dead ends: 32 [2021-12-07 01:18:09,853 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 01:18:09,855 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:18:09,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 16 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:18:09,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-07 01:18:09,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2021-12-07 01:18:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 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 01:18:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-12-07 01:18:09,867 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2021-12-07 01:18:09,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:18:09,868 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-12-07 01:18:09,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 01:18:09,868 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-12-07 01:18:09,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-07 01:18:09,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:18:09,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:18:09,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:18:09,870 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:18:09,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:18:09,871 INFO L85 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2021-12-07 01:18:09,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:18:09,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335135917] [2021-12-07 01:18:09,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:18:09,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:18:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:18:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:18:10,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:18:10,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335135917] [2021-12-07 01:18:10,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335135917] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:18:10,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084131578] [2021-12-07 01:18:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:18:10,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:18:10,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:18:10,336 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:18:10,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:18:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:18:10,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-07 01:18:10,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:18:10,444 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 01:18:10,455 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 11 treesize of output 7 [2021-12-07 01:18:10,482 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 01:18:10,624 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 36 treesize of output 23 [2021-12-07 01:18:10,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 35 [2021-12-07 01:18:10,862 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 52 treesize of output 28 [2021-12-07 01:18:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:18:10,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:18:11,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:18:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:18:11,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084131578] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:18:11,159 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:18:11,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2021-12-07 01:18:11,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434920014] [2021-12-07 01:18:11,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:18:11,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-07 01:18:11,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:18:11,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-07 01:18:11,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-12-07 01:18:11,162 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 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 01:18:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:18:11,384 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2021-12-07 01:18:11,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:18:11,384 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 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 01:18:11,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:18:11,385 INFO L225 Difference]: With dead ends: 45 [2021-12-07 01:18:11,385 INFO L226 Difference]: Without dead ends: 43 [2021-12-07 01:18:11,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2021-12-07 01:18:11,387 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:18:11,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 78 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 202 Invalid, 0 Unknown, 8 Unchecked, 0.1s Time] [2021-12-07 01:18:11,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-07 01:18:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2021-12-07 01:18:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 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 01:18:11,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2021-12-07 01:18:11,392 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 20 [2021-12-07 01:18:11,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:18:11,393 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2021-12-07 01:18:11,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 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 01:18:11,393 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2021-12-07 01:18:11,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-07 01:18:11,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:18:11,394 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:18:11,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:18:11,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:18:11,596 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:18:11,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:18:11,598 INFO L85 PathProgramCache]: Analyzing trace with hash 859342364, now seen corresponding path program 2 times [2021-12-07 01:18:11,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:18:11,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985833891] [2021-12-07 01:18:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:18:11,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:18:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:18:11,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:18:11,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:18:11,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985833891] [2021-12-07 01:18:11,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985833891] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:18:11,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379452019] [2021-12-07 01:18:11,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:18:11,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:18:11,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:18:11,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:18:11,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:18:11,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:18:11,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:18:11,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:18:11,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:18:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:18:11,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:18:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:18:11,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379452019] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:18:11,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:18:11,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-07 01:18:11,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570376350] [2021-12-07 01:18:11,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:18:11,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 01:18:11,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:18:11,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 01:18:11,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:18:11,879 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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 01:18:11,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:18:11,961 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2021-12-07 01:18:11,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:18:11,962 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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 22 [2021-12-07 01:18:11,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:18:11,962 INFO L225 Difference]: With dead ends: 81 [2021-12-07 01:18:11,962 INFO L226 Difference]: Without dead ends: 54 [2021-12-07 01:18:11,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 01:18:11,964 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 71 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:18:11,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 41 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:18:11,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-12-07 01:18:11,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 36. [2021-12-07 01:18:11,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 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 01:18:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-12-07 01:18:11,969 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 22 [2021-12-07 01:18:11,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:18:11,969 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-12-07 01:18:11,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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 01:18:11,969 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-12-07 01:18:11,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-07 01:18:11,970 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:18:11,970 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:18:11,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:18:12,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:18:12,172 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:18:12,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:18:12,173 INFO L85 PathProgramCache]: Analyzing trace with hash 803751580, now seen corresponding path program 3 times [2021-12-07 01:18:12,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:18:12,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336277070] [2021-12-07 01:18:12,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:18:12,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:18:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:18:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:18:12,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:18:12,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336277070] [2021-12-07 01:18:12,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336277070] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:18:12,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153410231] [2021-12-07 01:18:12,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:18:12,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:18:12,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:18:12,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:18:12,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:18:12,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-07 01:18:12,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:18:12,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:18:12,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:18:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:18:12,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:18:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:18:12,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153410231] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:18:12,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:18:12,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-07 01:18:12,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072160144] [2021-12-07 01:18:12,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:18:12,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 01:18:12,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:18:12,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 01:18:12,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:18:12,539 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 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 01:18:12,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:18:12,610 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-12-07 01:18:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:18:12,610 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 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 22 [2021-12-07 01:18:12,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:18:12,611 INFO L225 Difference]: With dead ends: 52 [2021-12-07 01:18:12,611 INFO L226 Difference]: Without dead ends: 43 [2021-12-07 01:18:12,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:18:12,613 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 86 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:18:12,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 43 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:18:12,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-07 01:18:12,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2021-12-07 01:18:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 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 01:18:12,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2021-12-07 01:18:12,619 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2021-12-07 01:18:12,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:18:12,619 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2021-12-07 01:18:12,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 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 01:18:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2021-12-07 01:18:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-07 01:18:12,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:18:12,620 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:18:12,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:18:12,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:18:12,822 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:18:12,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:18:12,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1304966232, now seen corresponding path program 4 times [2021-12-07 01:18:12,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:18:12,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733515975] [2021-12-07 01:18:12,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:18:12,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:18:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:18:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:18:13,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:18:13,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733515975] [2021-12-07 01:18:13,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733515975] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:18:13,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687521795] [2021-12-07 01:18:13,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:18:13,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:18:13,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:18:13,563 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:18:13,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:18:13,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:18:13,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:18:13,601 WARN L261 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-07 01:18:13,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:18:13,618 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 11 treesize of output 7 [2021-12-07 01:18:13,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:13,648 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 01:18:13,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:13,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:13,711 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 30 treesize of output 32 [2021-12-07 01:18:13,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:13,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:18:13,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:13,861 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2021-12-07 01:18:13,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:13,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:13,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2021-12-07 01:18:14,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:14,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:18:14,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:14,068 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 41 [2021-12-07 01:18:14,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:14,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:14,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:14,177 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-12-07 01:18:14,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 50 [2021-12-07 01:18:14,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:14,305 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 43 treesize of output 27 [2021-12-07 01:18:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:18:14,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:18:16,464 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_57| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_57| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_161 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_57| 8)) v_ArrVal_161) |c_ULTIMATE.start_main_~a~0#1.offset|))))) is different from false [2021-12-07 01:18:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-07 01:18:28,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687521795] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:18:28,610 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:18:28,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2021-12-07 01:18:28,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610943267] [2021-12-07 01:18:28,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:18:28,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-07 01:18:28,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:18:28,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-07 01:18:28,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2015, Unknown=16, NotChecked=92, Total=2352 [2021-12-07 01:18:28,613 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 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 01:18:31,367 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse1 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8))))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= .cse1 3) (forall ((|v_ULTIMATE.start_main_~i~0#1_57| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_57| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_161 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_57| 8)) v_ArrVal_161) |c_ULTIMATE.start_main_~a~0#1.offset|))))) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|) (= 2 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)))) (< 1 c_~N~0) (<= c_~N~0 2) (= (+ c_~N~0 1) .cse1)))) is different from false [2021-12-07 01:18:33,419 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_57| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_57| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_161 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_57| 8)) v_ArrVal_161) |c_ULTIMATE.start_main_~a~0#1.offset|))))) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|) (= 2 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 3) (< 1 c_~N~0) (<= c_~N~0 2)) is different from false [2021-12-07 01:18:33,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:18:33,536 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2021-12-07 01:18:33,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-07 01:18:33,537 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 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 26 [2021-12-07 01:18:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:18:33,537 INFO L225 Difference]: With dead ends: 57 [2021-12-07 01:18:33,538 INFO L226 Difference]: Without dead ends: 55 [2021-12-07 01:18:33,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=267, Invalid=2378, Unknown=19, NotChecked=306, Total=2970 [2021-12-07 01:18:33,540 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:18:33,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 158 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 257 Invalid, 0 Unknown, 271 Unchecked, 0.1s Time] [2021-12-07 01:18:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-07 01:18:33,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2021-12-07 01:18:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 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 01:18:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-12-07 01:18:33,548 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 26 [2021-12-07 01:18:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:18:33,549 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-12-07 01:18:33,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 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 01:18:33,549 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-12-07 01:18:33,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 01:18:33,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:18:33,550 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:18:33,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-07 01:18:33,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:18:33,752 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:18:33,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:18:33,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1135931414, now seen corresponding path program 5 times [2021-12-07 01:18:33,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:18:33,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50815294] [2021-12-07 01:18:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:18:33,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:18:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:18:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:18:33,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:18:33,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50815294] [2021-12-07 01:18:33,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50815294] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:18:33,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205520565] [2021-12-07 01:18:33,823 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:18:33,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:18:33,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:18:33,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:18:33,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:18:33,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-07 01:18:33,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:18:33,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 01:18:33,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:18:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:18:33,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:18:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:18:33,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205520565] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:18:33,943 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:18:33,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-12-07 01:18:33,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364029668] [2021-12-07 01:18:33,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:18:33,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 01:18:33,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:18:33,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 01:18:33,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:18:33,944 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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 01:18:34,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:18:34,029 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2021-12-07 01:18:34,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 01:18:34,030 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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) Word has length 28 [2021-12-07 01:18:34,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:18:34,031 INFO L225 Difference]: With dead ends: 112 [2021-12-07 01:18:34,031 INFO L226 Difference]: Without dead ends: 89 [2021-12-07 01:18:34,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:18:34,032 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 90 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:18:34,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 69 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:18:34,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-07 01:18:34,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 63. [2021-12-07 01:18:34,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1290322580645162) internal successors, (70), 62 states have internal predecessors, (70), 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 01:18:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2021-12-07 01:18:34,039 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 28 [2021-12-07 01:18:34,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:18:34,039 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2021-12-07 01:18:34,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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 01:18:34,039 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2021-12-07 01:18:34,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 01:18:34,040 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:18:34,040 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:18:34,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 01:18:34,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:18:34,241 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:18:34,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:18:34,241 INFO L85 PathProgramCache]: Analyzing trace with hash -227434410, now seen corresponding path program 6 times [2021-12-07 01:18:34,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:18:34,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617633151] [2021-12-07 01:18:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:18:34,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:18:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:18:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:18:34,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:18:34,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617633151] [2021-12-07 01:18:34,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617633151] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:18:34,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286810238] [2021-12-07 01:18:34,283 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 01:18:34,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:18:34,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:18:34,284 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:18:34,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 01:18:34,321 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-12-07 01:18:34,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:18:34,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 01:18:34,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:18:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:18:34,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:18:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:18:34,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286810238] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:18:34,403 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:18:34,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-12-07 01:18:34,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70777190] [2021-12-07 01:18:34,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:18:34,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 01:18:34,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:18:34,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 01:18:34,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:18:34,405 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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 01:18:34,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:18:34,517 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2021-12-07 01:18:34,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 01:18:34,517 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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 28 [2021-12-07 01:18:34,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:18:34,518 INFO L225 Difference]: With dead ends: 91 [2021-12-07 01:18:34,518 INFO L226 Difference]: Without dead ends: 76 [2021-12-07 01:18:34,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-12-07 01:18:34,520 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 95 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:18:34,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 101 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:18:34,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-07 01:18:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 54. [2021-12-07 01:18:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 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 01:18:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-12-07 01:18:34,528 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 28 [2021-12-07 01:18:34,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:18:34,528 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-12-07 01:18:34,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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 01:18:34,529 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-12-07 01:18:34,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 01:18:34,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:18:34,530 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:18:34,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 01:18:34,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-07 01:18:34,732 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:18:34,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:18:34,734 INFO L85 PathProgramCache]: Analyzing trace with hash 341343694, now seen corresponding path program 1 times [2021-12-07 01:18:34,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:18:34,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979072489] [2021-12-07 01:18:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:18:34,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:18:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:18:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:18:35,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:18:35,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979072489] [2021-12-07 01:18:35,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979072489] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:18:35,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563499966] [2021-12-07 01:18:35,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:18:35,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:18:35,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:18:35,362 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:18:35,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 01:18:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:18:35,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-07 01:18:35,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:18:35,414 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 11 treesize of output 7 [2021-12-07 01:18:35,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:35,437 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 01:18:35,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:35,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:35,487 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 01:18:35,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:35,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:18:35,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:35,601 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2021-12-07 01:18:35,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:35,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:35,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 38 [2021-12-07 01:18:35,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:35,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:18:35,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:35,761 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 41 [2021-12-07 01:18:35,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:35,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:35,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2021-12-07 01:18:36,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:18:36,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 37 [2021-12-07 01:18:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:18:36,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:18:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:18:53,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563499966] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:18:53,259 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:18:53,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 21] total 55 [2021-12-07 01:18:53,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642984585] [2021-12-07 01:18:53,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:18:53,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-07 01:18:53,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:18:53,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-07 01:18:53,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=2627, Unknown=6, NotChecked=0, Total=2970 [2021-12-07 01:18:53,261 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 55 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 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 01:19:08,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:19:08,320 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2021-12-07 01:19:08,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-07 01:19:08,321 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 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 30 [2021-12-07 01:19:08,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:19:08,321 INFO L225 Difference]: With dead ends: 67 [2021-12-07 01:19:08,321 INFO L226 Difference]: Without dead ends: 46 [2021-12-07 01:19:08,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 31.9s TimeCoverageRelationStatistics Valid=691, Invalid=4269, Unknown=10, NotChecked=0, Total=4970 [2021-12-07 01:19:08,324 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 40 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 268 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:19:08,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 168 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 300 Invalid, 0 Unknown, 268 Unchecked, 0.4s Time] [2021-12-07 01:19:08,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-12-07 01:19:08,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2021-12-07 01:19:08,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 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 01:19:08,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-12-07 01:19:08,329 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 30 [2021-12-07 01:19:08,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:19:08,329 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-12-07 01:19:08,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 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 01:19:08,330 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-12-07 01:19:08,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-07 01:19:08,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:19:08,330 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:19:08,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 01:19:08,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:19:08,532 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:19:08,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:19:08,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1505554158, now seen corresponding path program 7 times [2021-12-07 01:19:08,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:19:08,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196213356] [2021-12-07 01:19:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:19:08,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:19:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:19:09,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:19:09,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196213356] [2021-12-07 01:19:09,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196213356] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:19:09,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338636732] [2021-12-07 01:19:09,678 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 01:19:09,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:19:09,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:19:09,679 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:19:09,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 01:19:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:19:09,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-07 01:19:09,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:19:09,733 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 11 treesize of output 7 [2021-12-07 01:19:09,737 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 01:19:09,746 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 01:19:09,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:09,780 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 30 treesize of output 32 [2021-12-07 01:19:09,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:09,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:09,840 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 37 treesize of output 42 [2021-12-07 01:19:10,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:19:10,111 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 58 treesize of output 51 [2021-12-07 01:19:10,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:19:10,295 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 62 treesize of output 51 [2021-12-07 01:19:10,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:19:10,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,480 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 66 treesize of output 51 [2021-12-07 01:19:10,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:19:10,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,717 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 55 [2021-12-07 01:19:10,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:10,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:19:10,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 54 [2021-12-07 01:19:11,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:11,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:19:11,123 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-12-07 01:19:11,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 54 [2021-12-07 01:19:11,316 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 43 treesize of output 27 [2021-12-07 01:19:11,360 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:19:11,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:19:13,607 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_120| Int)) (or (forall ((v_ArrVal_370 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_120| 8)) v_ArrVal_370) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_120| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-07 01:20:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-07 01:20:29,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338636732] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:20:29,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:20:29,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 62 [2021-12-07 01:20:29,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685181014] [2021-12-07 01:20:29,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:20:29,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-12-07 01:20:29,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:29,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-12-07 01:20:29,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=3285, Unknown=59, NotChecked=118, Total=3782 [2021-12-07 01:20:29,350 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 62 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 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 01:20:31,621 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (not (= |ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= 3 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)))) (exists ((|v_ULTIMATE.start_main_~i~0#1_113| Int)) (and (<= |v_ULTIMATE.start_main_~i~0#1_113| 2) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_113| 8))) 1) (<= c_~N~0 (+ |v_ULTIMATE.start_main_~i~0#1_113| 1)))) (= (+ c_~N~0 1) (select .cse0 0)) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~i~0#1| 1) (<= (+ (div (* |c_ULTIMATE.start_main_~a~0#1.offset| (- 1)) 8) 1) |c_ULTIMATE.start_main_~i~0#1|) (= 4 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8) (- 8)))) (<= 3 c_~N~0) (forall ((|v_ULTIMATE.start_main_~i~0#1_120| Int)) (or (forall ((v_ArrVal_370 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_120| 8)) v_ArrVal_370) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_120| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))))) is different from false [2021-12-07 01:20:33,724 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) 4) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (not (= |ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= 3 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)))) (= (+ c_~N~0 1) (select .cse0 0)) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (<= (+ (div (* |c_ULTIMATE.start_main_~a~0#1.offset| (- 1)) 8) 1) |c_ULTIMATE.start_main_~i~0#1|) (<= 3 c_~N~0) (forall ((|v_ULTIMATE.start_main_~i~0#1_120| Int)) (or (forall ((v_ArrVal_370 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_120| 8)) v_ArrVal_370) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_120| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (<= c_~N~0 3))) is different from false [2021-12-07 01:20:36,920 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= (+ c_~N~0 1) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0)) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (<= (+ (div (* |c_ULTIMATE.start_main_~a~0#1.offset| (- 1)) 8) 1) |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_120| Int)) (or (forall ((v_ArrVal_370 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_120| 8)) v_ArrVal_370) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_120| (+ |c_ULTIMATE.start_main_~i~0#1| 1))))) is different from false [2021-12-07 01:20:36,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:20:36,976 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2021-12-07 01:20:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-07 01:20:36,976 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 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 01:20:36,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:20:36,977 INFO L225 Difference]: With dead ends: 66 [2021-12-07 01:20:36,977 INFO L226 Difference]: Without dead ends: 64 [2021-12-07 01:20:36,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 86.4s TimeCoverageRelationStatistics Valid=387, Invalid=3727, Unknown=62, NotChecked=516, Total=4692 [2021-12-07 01:20:36,979 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:20:36,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 182 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 190 Unchecked, 0.0s Time] [2021-12-07 01:20:36,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-07 01:20:36,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-12-07 01:20:36,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 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 01:20:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2021-12-07 01:20:36,984 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 32 [2021-12-07 01:20:36,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:20:36,985 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2021-12-07 01:20:36,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 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 01:20:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2021-12-07 01:20:36,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 01:20:36,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:20:36,986 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:37,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 01:20:37,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 01:20:37,187 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:20:37,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:37,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2062841424, now seen corresponding path program 8 times [2021-12-07 01:20:37,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:37,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302734126] [2021-12-07 01:20:37,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:37,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 01:20:37,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:37,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302734126] [2021-12-07 01:20:37,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302734126] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:20:37,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775086840] [2021-12-07 01:20:37,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:20:37,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:20:37,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:20:37,326 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:20:37,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 01:20:37,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:20:37,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:20:37,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 01:20:37,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:20:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 01:20:37,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:20:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 01:20:37,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775086840] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:20:37,583 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:20:37,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2021-12-07 01:20:37,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92269644] [2021-12-07 01:20:37,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:20:37,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 01:20:37,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:37,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 01:20:37,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:20:37,585 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 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 01:20:37,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:20:37,785 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2021-12-07 01:20:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 01:20:37,785 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 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 34 [2021-12-07 01:20:37,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:20:37,786 INFO L225 Difference]: With dead ends: 138 [2021-12-07 01:20:37,786 INFO L226 Difference]: Without dead ends: 113 [2021-12-07 01:20:37,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-12-07 01:20:37,787 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 128 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:20:37,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 94 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:20:37,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-07 01:20:37,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 79. [2021-12-07 01:20:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 78 states have internal predecessors, (87), 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 01:20:37,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-12-07 01:20:37,795 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 34 [2021-12-07 01:20:37,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:20:37,795 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-12-07 01:20:37,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 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 01:20:37,795 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-12-07 01:20:37,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 01:20:37,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:20:37,796 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:37,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 01:20:37,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:20:37,998 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:20:37,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:37,999 INFO L85 PathProgramCache]: Analyzing trace with hash 526321296, now seen corresponding path program 9 times [2021-12-07 01:20:37,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:37,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645915715] [2021-12-07 01:20:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:38,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:38,111 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 01:20:38,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:38,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645915715] [2021-12-07 01:20:38,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645915715] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:20:38,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897006019] [2021-12-07 01:20:38,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:20:38,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:20:38,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:20:38,112 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:20:38,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 01:20:38,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-07 01:20:38,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:20:38,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 01:20:38,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:20:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 01:20:38,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:20:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 01:20:38,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897006019] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:20:38,330 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:20:38,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2021-12-07 01:20:38,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586184703] [2021-12-07 01:20:38,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:20:38,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 01:20:38,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:20:38,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 01:20:38,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:20:38,331 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 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 01:20:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:20:38,724 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2021-12-07 01:20:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 01:20:38,724 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 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 34 [2021-12-07 01:20:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:20:38,725 INFO L225 Difference]: With dead ends: 119 [2021-12-07 01:20:38,725 INFO L226 Difference]: Without dead ends: 98 [2021-12-07 01:20:38,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:20:38,726 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 122 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:20:38,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 163 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 01:20:38,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-07 01:20:38,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 68. [2021-12-07 01:20:38,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 67 states have internal predecessors, (73), 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 01:20:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2021-12-07 01:20:38,733 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 34 [2021-12-07 01:20:38,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:20:38,733 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2021-12-07 01:20:38,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 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 01:20:38,733 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2021-12-07 01:20:38,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-07 01:20:38,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:20:38,734 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:20:38,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-07 01:20:38,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:20:38,936 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:20:38,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:20:38,937 INFO L85 PathProgramCache]: Analyzing trace with hash -968725112, now seen corresponding path program 2 times [2021-12-07 01:20:38,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:20:38,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457862408] [2021-12-07 01:20:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:20:38,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:20:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:20:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:39,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:20:39,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457862408] [2021-12-07 01:20:39,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457862408] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:20:39,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445721637] [2021-12-07 01:20:39,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:20:39,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:20:39,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:20:39,801 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:20:39,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 01:20:39,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:20:39,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:20:39,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 77 conjunts are in the unsatisfiable core [2021-12-07 01:20:39,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:20:39,862 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 11 treesize of output 7 [2021-12-07 01:20:39,865 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 01:20:39,897 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 01:20:39,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:39,965 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 30 treesize of output 32 [2021-12-07 01:20:40,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,045 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 42 treesize of output 47 [2021-12-07 01:20:40,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:20:40,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,262 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 58 treesize of output 51 [2021-12-07 01:20:40,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:20:40,404 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 62 treesize of output 49 [2021-12-07 01:20:40,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 47 [2021-12-07 01:20:40,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:20:40,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,703 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 62 treesize of output 51 [2021-12-07 01:20:40,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:40,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:20:40,886 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 67 treesize of output 54 [2021-12-07 01:20:41,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:41,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:41,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:41,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:41,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:20:41,121 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-12-07 01:20:41,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 64 [2021-12-07 01:20:41,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2021-12-07 01:20:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:20:41,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:20:43,852 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_182| Int)) (or (forall ((v_ArrVal_550 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_182| 8)) v_ArrVal_550) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (< |v_ULTIMATE.start_main_~i~0#1_182| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-07 01:20:44,885 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_550 Int) (|v_ULTIMATE.start_main_~i~0#1_182| Int)) (or (= (+ c_~N~0 1) (select (store (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8)))) (store .cse0 .cse1 (+ (select .cse0 .cse1) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_182| 8)) v_ArrVal_550) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (< |v_ULTIMATE.start_main_~i~0#1_182| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-07 01:21:12,064 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_550 Int) (|v_ULTIMATE.start_main_~i~0#1_182| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_182| (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (= (+ c_~N~0 1) (select (store (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (let ((.cse0 (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2))) (store .cse3 .cse4 (+ (select .cse3 .cse4) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 8))) (store .cse0 .cse1 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse0) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse0 .cse1))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_182| 8)) v_ArrVal_550) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))))) is different from false [2021-12-07 01:21:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-12-07 01:21:17,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445721637] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:21:17,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:21:17,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 68 [2021-12-07 01:21:17,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594279812] [2021-12-07 01:21:17,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:21:17,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-12-07 01:21:17,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:21:17,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-12-07 01:21:17,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=3769, Unknown=21, NotChecked=384, Total=4556 [2021-12-07 01:21:17,811 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 68 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 68 states have internal predecessors, (97), 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 01:21:20,784 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 8)) (.cse3 (select .cse0 0)) (.cse1 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_182| Int)) (or (forall ((v_ArrVal_550 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_182| 8)) v_ArrVal_550) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (< |v_ULTIMATE.start_main_~i~0#1_182| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)) 1) (= (+ .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) 8) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~i~0#1| 1) (= 4 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 (- 8)))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) .cse3) (or (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1) (= .cse3 1)) (<= (+ .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| 9) (* 8 c_~N~0))) (<= c_~N~0 3) (< 2 c_~N~0) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse4 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|))) (and (= (select (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| 8))) (+ .cse4 1)) (not (= |ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= 3 .cse4))))))) is different from false [2021-12-07 01:21:22,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:21:22,396 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2021-12-07 01:21:22,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-07 01:21:22,396 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 68 states have internal predecessors, (97), 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 36 [2021-12-07 01:21:22,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:21:22,397 INFO L225 Difference]: With dead ends: 71 [2021-12-07 01:21:22,397 INFO L226 Difference]: Without dead ends: 69 [2021-12-07 01:21:22,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=510, Invalid=5183, Unknown=23, NotChecked=604, Total=6320 [2021-12-07 01:21:22,399 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 43 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 704 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:21:22,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 201 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 452 Invalid, 0 Unknown, 704 Unchecked, 0.4s Time] [2021-12-07 01:21:22,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-07 01:21:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-12-07 01:21:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 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 01:21:22,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-12-07 01:21:22,405 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 36 [2021-12-07 01:21:22,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:21:22,405 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-12-07 01:21:22,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 68 states have internal predecessors, (97), 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 01:21:22,405 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-12-07 01:21:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-07 01:21:22,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:21:22,406 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:21:22,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-07 01:21:22,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-07 01:21:22,608 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:21:22,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:21:22,609 INFO L85 PathProgramCache]: Analyzing trace with hash -389301684, now seen corresponding path program 10 times [2021-12-07 01:21:22,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:21:22,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619278444] [2021-12-07 01:21:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:21:22,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:21:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:21:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:24,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:21:24,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619278444] [2021-12-07 01:21:24,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619278444] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:21:24,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549533331] [2021-12-07 01:21:24,662 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:21:24,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:21:24,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:21:24,663 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:21:24,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 01:21:24,708 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:21:24,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:21:24,710 WARN L261 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-07 01:21:24,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:21:24,726 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 11 treesize of output 7 [2021-12-07 01:21:24,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:24,790 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 01:21:24,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:24,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:24,919 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 30 treesize of output 32 [2021-12-07 01:21:25,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,043 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 39 treesize of output 44 [2021-12-07 01:21:25,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,190 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 48 treesize of output 56 [2021-12-07 01:21:25,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:21:25,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,552 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 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2021-12-07 01:21:25,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:21:25,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,734 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 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 61 [2021-12-07 01:21:25,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:21:25,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:25,921 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 5 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 66 [2021-12-07 01:21:26,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,126 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 86 treesize of output 64 [2021-12-07 01:21:26,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:21:26,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,401 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 5 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 68 [2021-12-07 01:21:26,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:21:26,666 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 84 treesize of output 68 [2021-12-07 01:21:26,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:26,904 INFO L354 Elim1Store]: treesize reduction 48, result has 39.2 percent of original size [2021-12-07 01:21:26,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 72 [2021-12-07 01:21:27,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:27,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:27,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:27,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:27,231 INFO L354 Elim1Store]: treesize reduction 78, result has 29.1 percent of original size [2021-12-07 01:21:27,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 71 [2021-12-07 01:21:27,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:21:27,454 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 43 treesize of output 27 [2021-12-07 01:21:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:21:27,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:21:29,791 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_205| Int)) (or (forall ((v_ArrVal_638 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-07 01:22:04,196 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_206| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_206| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_638 Int) (v_ArrVal_635 Int) (|v_ULTIMATE.start_main_~i~0#1_205| Int)) (or (= (+ c_~N~0 1) (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_206| 8)) v_ArrVal_635) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |v_ULTIMATE.start_main_~i~0#1_206| 1)))))) is different from false [2021-12-07 01:27:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 40 refuted. 3 times theorem prover too weak. 0 trivial. 5 not checked. [2021-12-07 01:27:41,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549533331] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:27:41,280 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:27:41,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 85 [2021-12-07 01:27:41,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622988971] [2021-12-07 01:27:41,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:27:41,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-12-07 01:27:41,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:27:41,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-12-07 01:27:41,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=476, Invalid=6143, Unknown=195, NotChecked=326, Total=7140 [2021-12-07 01:27:41,283 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 85 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 85 states have internal predecessors, (103), 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 01:27:53,036 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse1 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8) (- 8))))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_205| Int)) (or (forall ((v_ArrVal_638 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 24)) 1) (= (+ c_~N~0 1) (select .cse0 0)) (<= c_~N~0 4) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~i~0#1| 1) (< 3 c_~N~0) (forall ((|v_ULTIMATE.start_main_~i~0#1_206| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_206| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_638 Int) (v_ArrVal_635 Int) (|v_ULTIMATE.start_main_~i~0#1_205| Int)) (or (= (+ c_~N~0 1) (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_206| 8)) v_ArrVal_635) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |v_ULTIMATE.start_main_~i~0#1_206| 1)))))) (= 5 .cse1) (<= |c_ULTIMATE.start_main_~i~0#1| 1) (= (+ (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)) 4) .cse1) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (= (+ (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 1) (select (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| 8) (- 8)))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|)))))) is different from false [2021-12-07 01:27:55,224 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* 8 |c_ULTIMATE.start_main_~i~0#1|)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (= (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 4) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|))) (or (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 24)) 1) (= .cse1 24)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_205| Int)) (or (forall ((v_ArrVal_638 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (+ c_~N~0 1) (select .cse0 0)) (<= c_~N~0 4) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) 5) (< 3 c_~N~0) (<= (+ 2 (div (* |c_ULTIMATE.start_main_~a~0#1.offset| (- 1)) 8)) |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_206| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_206| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_638 Int) (v_ArrVal_635 Int) (|v_ULTIMATE.start_main_~i~0#1_205| Int)) (or (= (+ c_~N~0 1) (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_206| 8)) v_ArrVal_635) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |v_ULTIMATE.start_main_~i~0#1_206| 1)))))) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (or (= .cse1 16) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)) 1)))) is different from false [2021-12-07 01:27:57,407 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (= (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 4) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_205| Int)) (or (forall ((v_ArrVal_638 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (+ c_~N~0 1) (select .cse0 0)) (<= c_~N~0 4) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) 5) (< 3 c_~N~0) (<= (+ 2 (div (* |c_ULTIMATE.start_main_~a~0#1.offset| (- 1)) 8)) |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_206| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_206| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_638 Int) (v_ArrVal_635 Int) (|v_ULTIMATE.start_main_~i~0#1_205| Int)) (or (= (+ c_~N~0 1) (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_206| 8)) v_ArrVal_635) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |v_ULTIMATE.start_main_~i~0#1_206| 1)))))))) is different from false [2021-12-07 01:28:01,197 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_205| Int)) (or (forall ((v_ArrVal_638 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (+ c_~N~0 1) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0)) (forall ((|v_ULTIMATE.start_main_~i~0#1_206| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_206| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_638 Int) (v_ArrVal_635 Int) (|v_ULTIMATE.start_main_~i~0#1_205| Int)) (or (= (+ c_~N~0 1) (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_206| 8)) v_ArrVal_635) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |v_ULTIMATE.start_main_~i~0#1_206| 1)))))) (forall ((v_ArrVal_638 Int) (|v_ULTIMATE.start_main_~i~0#1_206| Int) (v_ArrVal_635 Int) (|v_ULTIMATE.start_main_~i~0#1_205| Int) (v_ArrVal_633 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |v_ULTIMATE.start_main_~i~0#1_206| 1)) (< |v_ULTIMATE.start_main_~i~0#1_206| (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (= (+ c_~N~0 1) (select (store (store (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| 8) 8) v_ArrVal_633) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_206| 8)) v_ArrVal_635) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|))))) is different from false [2021-12-07 01:28:07,576 WARN L227 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 43 DAG size of output: 41 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:28:11,756 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_205| Int)) (or (forall ((v_ArrVal_638 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1)) (forall ((|v_ULTIMATE.start_main_~i~0#1_206| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_206| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_638 Int) (v_ArrVal_635 Int) (|v_ULTIMATE.start_main_~i~0#1_205| Int)) (or (= (+ c_~N~0 1) (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_206| 8)) v_ArrVal_635) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |v_ULTIMATE.start_main_~i~0#1_206| 1)))))) (forall ((v_ArrVal_638 Int) (|v_ULTIMATE.start_main_~i~0#1_206| Int) (v_ArrVal_635 Int) (|v_ULTIMATE.start_main_~i~0#1_205| Int) (v_ArrVal_633 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |v_ULTIMATE.start_main_~i~0#1_206| 1)) (< |v_ULTIMATE.start_main_~i~0#1_206| (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (= (+ c_~N~0 1) (select (store (store (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| 8) 8) v_ArrVal_633) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_206| 8)) v_ArrVal_635) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|))))) is different from false [2021-12-07 01:28:26,359 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_205| Int)) (or (forall ((v_ArrVal_638 Int)) (= (+ c_~N~0 1) (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1)) (forall ((|v_ULTIMATE.start_main_~i~0#1_206| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_206| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_638 Int) (v_ArrVal_635 Int) (|v_ULTIMATE.start_main_~i~0#1_205| Int)) (or (= (+ c_~N~0 1) (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_206| 8)) v_ArrVal_635) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_205| 8)) v_ArrVal_638) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< |v_ULTIMATE.start_main_~i~0#1_205| (+ |v_ULTIMATE.start_main_~i~0#1_206| 1))))))) is different from false [2021-12-07 01:28:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:28:30,563 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2021-12-07 01:28:30,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-07 01:28:30,563 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 85 states have internal predecessors, (103), 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 01:28:30,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:28:30,564 INFO L225 Difference]: With dead ends: 108 [2021-12-07 01:28:30,564 INFO L226 Difference]: Without dead ends: 106 [2021-12-07 01:28:30,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 421.9s TimeCoverageRelationStatistics Valid=648, Invalid=8293, Unknown=211, NotChecked=1560, Total=10712 [2021-12-07 01:28:30,567 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1328 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:28:30,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 297 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 525 Invalid, 0 Unknown, 1328 Unchecked, 0.5s Time] [2021-12-07 01:28:30,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-07 01:28:30,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 93. [2021-12-07 01:28:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.0869565217391304) internal successors, (100), 92 states have internal predecessors, (100), 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 01:28:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2021-12-07 01:28:30,575 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 38 [2021-12-07 01:28:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:28:30,575 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2021-12-07 01:28:30,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 85 states have internal predecessors, (103), 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 01:28:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2021-12-07 01:28:30,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-07 01:28:30,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:28:30,576 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:28:30,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-07 01:28:30,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-07 01:28:30,778 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:28:30,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:28:30,779 INFO L85 PathProgramCache]: Analyzing trace with hash -441278722, now seen corresponding path program 3 times [2021-12-07 01:28:30,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:28:30,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78612058] [2021-12-07 01:28:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:28:30,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:28:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:28:31,710 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:28:31,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:28:31,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78612058] [2021-12-07 01:28:31,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78612058] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:28:31,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28725954] [2021-12-07 01:28:31,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:28:31,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:28:31,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:28:31,711 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:28:31,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42ea86d-13a6-4d21-9f23-d472967b6801/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-07 01:28:31,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-07 01:28:31,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:28:31,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-07 01:28:31,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:28:31,822 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 01:28:31,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:28:31,902 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 01:28:31,952 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-07 01:28:31,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-07 01:28:32,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:28:32,198 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 25 [2021-12-07 01:28:32,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:28:32,288 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 25 [2021-12-07 01:28:32,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:28:32,389 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-07 01:28:32,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-12-07 01:28:32,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:28:32,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:28:32,644 INFO L354 Elim1Store]: treesize reduction 47, result has 28.8 percent of original size [2021-12-07 01:28:32,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 46 [2021-12-07 01:28:32,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:28:32,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:28:32,875 INFO L354 Elim1Store]: treesize reduction 39, result has 30.4 percent of original size [2021-12-07 01:28:32,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 55 [2021-12-07 01:28:33,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:28:33,114 INFO L354 Elim1Store]: treesize reduction 68, result has 44.7 percent of original size [2021-12-07 01:28:33,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 94 [2021-12-07 01:28:56,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:28:56,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:28:56,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:28:56,699 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-12-07 01:28:56,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 54 [2021-12-07 01:28:56,778 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:28:56,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:29:48,539 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:29:48,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 244 treesize of output 208 [2021-12-07 01:30:00,255 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_arrayElimArr_1 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_233| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_228| Int) (v_ArrVal_701 Int)) (let ((.cse1 (let ((.cse4 (store (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| (* |ULTIMATE.start_main_~i~0#1| 8)) 1)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse2 (store (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse5 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8) v_ArrVal_701)) (.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_233| 8)))) (store .cse2 .cse3 (+ (select (select (store .cse4 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse2 .cse3))))))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (<= .cse0 (+ |ULTIMATE.start_main_~i~0#1| 1)) (< (+ 2 |ULTIMATE.start_main_~i~0#1|) .cse0) (= (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_228| 8))) .cse0) (< |v_ULTIMATE.start_main_~i~0#1_228| 2) (< 4 .cse0) (<= .cse0 (+ |v_ULTIMATE.start_main_~i~0#1_233| 1)) (<= .cse0 (+ |v_ULTIMATE.start_main_~i~0#1_228| 1)) (< (+ 2 |v_ULTIMATE.start_main_~i~0#1_233|) .cse0))))) is different from false [2021-12-07 01:30:00,528 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_242| Int) (v_arrayElimArr_1 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_233| Int) (v_ArrVal_691 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_228| Int) (v_ArrVal_701 Int)) (let ((.cse1 (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (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| 8)) v_ArrVal_691) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_242| 8)) 1)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_233| 8))) (.cse2 (store (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse5 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8) v_ArrVal_701))) (store .cse2 .cse3 (+ (select .cse2 .cse3) (select (select (store .cse4 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|))))))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (< (+ 2 |v_ULTIMATE.start_main_~i~0#1_242|) .cse0) (<= .cse0 (+ |v_ULTIMATE.start_main_~i~0#1_233| 1)) (< |v_ULTIMATE.start_main_~i~0#1_228| 2) (<= .cse0 (+ |v_ULTIMATE.start_main_~i~0#1_242| 1)) (= .cse0 (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_228| 8)))) (< 4 .cse0) (<= .cse0 (+ |v_ULTIMATE.start_main_~i~0#1_228| 1)) (< (+ 2 |v_ULTIMATE.start_main_~i~0#1_233|) .cse0))))) is different from false [2021-12-07 01:30:00,831 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_243| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_243| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|v_ULTIMATE.start_main_~i~0#1_242| Int) (v_arrayElimArr_1 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_233| Int) (v_ArrVal_691 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_228| Int) (v_ArrVal_701 Int)) (let ((.cse1 (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 8)) v_ArrVal_691) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_242| 8)) 1)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_233| 8))) (.cse2 (store (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse5 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8) v_ArrVal_701))) (store .cse2 .cse3 (+ (select .cse2 .cse3) (select (select (store .cse4 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|))))))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (< (+ 2 |v_ULTIMATE.start_main_~i~0#1_233|) .cse0) (< |v_ULTIMATE.start_main_~i~0#1_228| 2) (<= .cse0 (+ |v_ULTIMATE.start_main_~i~0#1_228| 1)) (= (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_228| 8))) .cse0) (< 4 .cse0) (<= .cse0 (+ |v_ULTIMATE.start_main_~i~0#1_233| 1)) (< (+ 2 |v_ULTIMATE.start_main_~i~0#1_242|) .cse0) (<= .cse0 (+ |v_ULTIMATE.start_main_~i~0#1_242| 1)))))))) is different from false [2021-12-07 01:30:00,969 INFO L354 Elim1Store]: treesize reduction 113, result has 28.9 percent of original size [2021-12-07 01:30:00,969 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 2284 treesize of output 873 [2021-12-07 01:30:00,978 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 2277 treesize of output 2111 [2021-12-07 01:30:00,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:30:01,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:30:01,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:30:01,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:30:01,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:30:01,481 INFO L354 Elim1Store]: treesize reduction 176, result has 32.6 percent of original size [2021-12-07 01:30:01,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 22861 treesize of output 20151 [2021-12-07 01:30:02,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:30:02,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:30:02,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:30:02,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:30:02,191 INFO L354 Elim1Store]: treesize reduction 36, result has 41.0 percent of original size [2021-12-07 01:30:02,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23760 treesize of output 21376