./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array18_pattern.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_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/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_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array18_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/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_e8e03260-f792-4dda-aaf3-b6c2538bfda3/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 4d58909a91b196e39d7623dd2e1e4d9b2698d6fa8ff06c2897eb5762e2e2e408 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:47:41,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:47:41,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:47:41,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:47:41,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:47:41,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:47:41,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:47:41,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:47:41,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:47:41,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:47:41,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:47:41,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:47:41,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:47:41,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:47:41,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:47:41,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:47:41,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:47:41,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:47:41,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:47:41,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:47:41,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:47:41,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:47:41,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:47:41,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:47:41,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:47:41,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:47:41,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:47:41,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:47:41,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:47:41,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:47:41,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:47:41,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:47:41,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:47:41,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:47:41,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:47:41,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:47:41,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:47:41,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:47:41,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:47:41,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:47:41,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:47:41,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:47:41,488 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:47:41,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:47:41,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:47:41,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:47:41,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:47:41,490 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:47:41,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:47:41,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:47:41,491 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:47:41,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:47:41,491 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:47:41,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:47:41,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:47:41,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:47:41,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:47:41,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:47:41,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:47:41,492 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:47:41,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:47:41,492 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:47:41,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:47:41,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:47:41,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:47:41,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:47:41,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:47:41,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:47:41,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:47:41,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:47:41,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:47:41,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:47:41,495 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:47:41,495 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:47:41,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:47:41,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:47:41,495 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_e8e03260-f792-4dda-aaf3-b6c2538bfda3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d58909a91b196e39d7623dd2e1e4d9b2698d6fa8ff06c2897eb5762e2e2e408 [2021-12-06 22:47:41,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:47:41,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:47:41,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:47:41,715 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:47:41,716 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:47:41,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-patterns/array18_pattern.c [2021-12-06 22:47:41,759 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/data/b3446443a/cc8f459e45d84d028ab8da2fc0b29c66/FLAGcd6325f3d [2021-12-06 22:47:42,136 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:47:42,136 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/sv-benchmarks/c/array-patterns/array18_pattern.c [2021-12-06 22:47:42,141 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/data/b3446443a/cc8f459e45d84d028ab8da2fc0b29c66/FLAGcd6325f3d [2021-12-06 22:47:42,151 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/data/b3446443a/cc8f459e45d84d028ab8da2fc0b29c66 [2021-12-06 22:47:42,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:47:42,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:47:42,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:47:42,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:47:42,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:47:42,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:47:42" (1/1) ... [2021-12-06 22:47:42,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4084edb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:42, skipping insertion in model container [2021-12-06 22:47:42,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:47:42" (1/1) ... [2021-12-06 22:47:42,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:47:42,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:47:42,292 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_e8e03260-f792-4dda-aaf3-b6c2538bfda3/sv-benchmarks/c/array-patterns/array18_pattern.c[1444,1457] [2021-12-06 22:47:42,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:47:42,319 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:47:42,331 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_e8e03260-f792-4dda-aaf3-b6c2538bfda3/sv-benchmarks/c/array-patterns/array18_pattern.c[1444,1457] [2021-12-06 22:47:42,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:47:42,352 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:47:42,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:42 WrapperNode [2021-12-06 22:47:42,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:47:42,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:47:42,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:47:42,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:47:42,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:42" (1/1) ... [2021-12-06 22:47:42,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:42" (1/1) ... [2021-12-06 22:47:42,390 INFO L137 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2021-12-06 22:47:42,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:47:42,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:47:42,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:47:42,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:47:42,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:42" (1/1) ... [2021-12-06 22:47:42,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:42" (1/1) ... [2021-12-06 22:47:42,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:42" (1/1) ... [2021-12-06 22:47:42,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:42" (1/1) ... [2021-12-06 22:47:42,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:42" (1/1) ... [2021-12-06 22:47:42,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:42" (1/1) ... [2021-12-06 22:47:42,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:42" (1/1) ... [2021-12-06 22:47:42,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:47:42,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:47:42,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:47:42,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:47:42,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:42" (1/1) ... [2021-12-06 22:47:42,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:47:42,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:42,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:47:42,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:47:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:47:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 22:47:42,479 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 22:47:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:47:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:47:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:47:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:47:42,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:47:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:47:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:47:42,533 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:47:42,534 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:47:42,653 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:47:42,658 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:47:42,659 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-06 22:47:42,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:47:42 BoogieIcfgContainer [2021-12-06 22:47:42,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:47:42,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:47:42,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:47:42,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:47:42,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:47:42" (1/3) ... [2021-12-06 22:47:42,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2541522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:47:42, skipping insertion in model container [2021-12-06 22:47:42,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:47:42" (2/3) ... [2021-12-06 22:47:42,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2541522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:47:42, skipping insertion in model container [2021-12-06 22:47:42,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:47:42" (3/3) ... [2021-12-06 22:47:42,666 INFO L111 eAbstractionObserver]: Analyzing ICFG array18_pattern.c [2021-12-06 22:47:42,670 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:47:42,670 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:47:42,705 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:47:42,710 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 [2021-12-06 22:47:42,710 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:47:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:47:42,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 22:47:42,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:42,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:42,728 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:42,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:42,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2132324569, now seen corresponding path program 1 times [2021-12-06 22:47:42,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:42,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772613646] [2021-12-06 22:47:42,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:42,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:42,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:47:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:47:42,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:42,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772613646] [2021-12-06 22:47:42,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772613646] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:42,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:42,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:47:42,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103048231] [2021-12-06 22:47:42,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:42,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:47:42,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:42,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:47:42,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:47:42,881 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:47:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:42,896 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2021-12-06 22:47:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:47:42,898 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-06 22:47:42,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:42,903 INFO L225 Difference]: With dead ends: 63 [2021-12-06 22:47:42,904 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 22:47:42,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:47:42,909 INFO L933 BasicCegarLoop]: 41 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, 41 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 [2021-12-06 22:47:42,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:42,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 22:47:42,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-06 22:47:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:47:42,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2021-12-06 22:47:42,938 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2021-12-06 22:47:42,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:42,938 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-12-06 22:47:42,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:47:42,938 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2021-12-06 22:47:42,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 22:47:42,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:42,940 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:42,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:47:42,941 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:42,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:42,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1872922357, now seen corresponding path program 1 times [2021-12-06 22:47:42,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:42,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570413702] [2021-12-06 22:47:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:42,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:42,957 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:47:42,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592091088] [2021-12-06 22:47:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:42,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:42,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:42,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:42,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:47:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:43,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:47:43,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:47:43,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:47:43,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:43,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570413702] [2021-12-06 22:47:43,117 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:47:43,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592091088] [2021-12-06 22:47:43,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592091088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:43,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:43,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:47:43,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329767921] [2021-12-06 22:47:43,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:43,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:47:43,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:43,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:47:43,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:47:43,122 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:47:43,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:43,144 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-12-06 22:47:43,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:47:43,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-12-06 22:47:43,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:43,146 INFO L225 Difference]: With dead ends: 36 [2021-12-06 22:47:43,146 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 22:47:43,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:47:43,149 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:43,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:43,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 22:47:43,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-06 22:47:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:47:43,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-06 22:47:43,158 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 30 [2021-12-06 22:47:43,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:43,160 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-06 22:47:43,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:47:43,160 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-06 22:47:43,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 22:47:43,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:43,161 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:43,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:47:43,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:43,363 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:43,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:43,365 INFO L85 PathProgramCache]: Analyzing trace with hash 212512359, now seen corresponding path program 1 times [2021-12-06 22:47:43,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:43,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482563275] [2021-12-06 22:47:43,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:43,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:43,416 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:47:43,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641386760] [2021-12-06 22:47:43,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:43,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:43,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:43,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:43,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:47:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:43,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:47:43,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 22:47:43,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:47:43,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:43,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482563275] [2021-12-06 22:47:43,643 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:47:43,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641386760] [2021-12-06 22:47:43,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641386760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:43,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:43,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:47:43,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139636496] [2021-12-06 22:47:43,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:43,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:47:43,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:43,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:47:43,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:47:43,646 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:47:43,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:43,715 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2021-12-06 22:47:43,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:47:43,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-12-06 22:47:43,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:43,716 INFO L225 Difference]: With dead ends: 67 [2021-12-06 22:47:43,716 INFO L226 Difference]: Without dead ends: 42 [2021-12-06 22:47:43,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:47:43,718 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:43,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 86 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:47:43,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-06 22:47:43,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-12-06 22:47:43,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:47:43,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2021-12-06 22:47:43,723 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 35 [2021-12-06 22:47:43,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:43,723 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2021-12-06 22:47:43,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:47:43,724 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2021-12-06 22:47:43,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 22:47:43,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:43,725 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:43,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:47:43,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:43,926 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash -654332553, now seen corresponding path program 1 times [2021-12-06 22:47:43,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:43,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838770602] [2021-12-06 22:47:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:43,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:43,966 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:47:43,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217498395] [2021-12-06 22:47:43,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:43,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:43,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:43,970 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:43,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:47:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:44,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:47:44,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 22:47:44,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:47:44,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:47:44,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838770602] [2021-12-06 22:47:44,149 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:47:44,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217498395] [2021-12-06 22:47:44,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217498395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:47:44,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:47:44,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:47:44,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569272092] [2021-12-06 22:47:44,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:47:44,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:47:44,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:47:44,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:47:44,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:47:44,152 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:47:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:47:44,192 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2021-12-06 22:47:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:47:44,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-12-06 22:47:44,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:47:44,193 INFO L225 Difference]: With dead ends: 64 [2021-12-06 22:47:44,194 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 22:47:44,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:47:44,195 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 26 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:47:44,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 53 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:47:44,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 22:47:44,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2021-12-06 22:47:44,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:47:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2021-12-06 22:47:44,200 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 38 [2021-12-06 22:47:44,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:47:44,200 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2021-12-06 22:47:44,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:47:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2021-12-06 22:47:44,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 22:47:44,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:47:44,201 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:47:44,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:47:44,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:44,402 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:47:44,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:47:44,403 INFO L85 PathProgramCache]: Analyzing trace with hash 579061941, now seen corresponding path program 1 times [2021-12-06 22:47:44,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:47:44,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881180823] [2021-12-06 22:47:44,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:44,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:47:44,414 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:47:44,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856297997] [2021-12-06 22:47:44,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:47:44,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:47:44,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:47:44,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:47:44,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:47:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:47:44,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 22:47:44,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:47:44,815 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 0 case distinctions, treesize of input 168 treesize of output 159 [2021-12-06 22:47:44,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 170 [2021-12-06 22:47:44,862 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:47:44,878 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:47:44,886 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 25 treesize of output 3 [2021-12-06 22:47:44,893 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 25 treesize of output 3 [2021-12-06 22:47:44,907 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 27 treesize of output 3 [2021-12-06 22:47:45,109 INFO L354 Elim1Store]: treesize reduction 23, result has 11.5 percent of original size [2021-12-06 22:47:45,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 26 [2021-12-06 22:47:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:47:45,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:47:45,378 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 165 treesize of output 157 [2021-12-06 22:47:45,393 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:47:45,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 157 treesize of output 170 [2021-12-06 22:47:45,422 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 24 treesize of output 4 [2021-12-06 22:47:45,454 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 24 treesize of output 4 [2021-12-06 22:47:45,507 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 26 treesize of output 4 [2021-12-06 22:47:45,546 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 26 treesize of output 4 [2021-12-06 22:47:45,608 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 26 treesize of output 4 [2021-12-06 22:47:45,634 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 26 treesize of output 4 [2021-12-06 22:47:45,709 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 28 treesize of output 4 [2021-12-06 22:47:45,744 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 28 treesize of output 4 [2021-12-06 22:47:45,893 INFO L354 Elim1Store]: treesize reduction 198, result has 50.6 percent of original size [2021-12-06 22:47:45,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 168 treesize of output 278 [2021-12-06 22:48:05,115 WARN L227 SmtUtils]: Spent 6.60s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 22:48:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 22:48:41,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:48:41,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881180823] [2021-12-06 22:48:41,705 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:48:41,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856297997] [2021-12-06 22:48:41,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856297997] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:48:41,705 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:48:41,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 32 [2021-12-06 22:48:41,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633638546] [2021-12-06 22:48:41,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:48:41,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 22:48:41,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:48:41,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 22:48:41,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=851, Unknown=1, NotChecked=0, Total=992 [2021-12-06 22:48:41,708 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 32 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:49:59,934 WARN L227 SmtUtils]: Spent 59.04s on a formula simplification. DAG size of input: 64 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 22:50:28,445 WARN L227 SmtUtils]: Spent 26.07s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 22:50:30,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-06 22:50:31,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-06 22:51:03,873 WARN L227 SmtUtils]: Spent 29.41s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 22:51:06,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-06 22:51:07,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-06 22:51:29,175 WARN L227 SmtUtils]: Spent 19.90s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 22:51:31,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-06 22:52:03,680 WARN L227 SmtUtils]: Spent 24.20s on a formula simplification that was a NOOP. DAG size: 89 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 22:52:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:04,887 INFO L93 Difference]: Finished difference Result 194 states and 262 transitions. [2021-12-06 22:52:04,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-12-06 22:52:04,888 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 40 [2021-12-06 22:52:04,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:04,890 INFO L225 Difference]: With dead ends: 194 [2021-12-06 22:52:04,891 INFO L226 Difference]: Without dead ends: 162 [2021-12-06 22:52:04,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1232 ImplicationChecksByTransitivity, 211.3s TimeCoverageRelationStatistics Valid=780, Invalid=4045, Unknown=5, NotChecked=0, Total=4830 [2021-12-06 22:52:04,893 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 285 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 145 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:04,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 296 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 571 Invalid, 2 Unknown, 252 Unchecked, 13.3s Time] [2021-12-06 22:52:04,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-12-06 22:52:04,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 80. [2021-12-06 22:52:04,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 22:52:04,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions. [2021-12-06 22:52:04,910 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 40 [2021-12-06 22:52:04,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:04,910 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 105 transitions. [2021-12-06 22:52:04,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:52:04,910 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions. [2021-12-06 22:52:04,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 22:52:04,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:04,912 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:04,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:52:05,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:05,112 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:05,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:05,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1287607751, now seen corresponding path program 1 times [2021-12-06 22:52:05,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:05,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947554098] [2021-12-06 22:52:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:05,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:05,121 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:52:05,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363491915] [2021-12-06 22:52:05,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:05,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:05,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:52:05,122 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:52:05,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:52:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:05,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 22:52:05,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:52:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:52:05,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:52:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 22:52:05,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:05,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947554098] [2021-12-06 22:52:05,564 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:52:05,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363491915] [2021-12-06 22:52:05,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363491915] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:52:05,564 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:52:05,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2021-12-06 22:52:05,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56309969] [2021-12-06 22:52:05,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:52:05,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 22:52:05,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:05,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 22:52:05,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:52:05,566 INFO L87 Difference]: Start difference. First operand 80 states and 105 transitions. Second operand has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 22:52:05,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:05,927 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2021-12-06 22:52:05,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 22:52:05,927 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2021-12-06 22:52:05,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:05,929 INFO L225 Difference]: With dead ends: 214 [2021-12-06 22:52:05,929 INFO L226 Difference]: Without dead ends: 165 [2021-12-06 22:52:05,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-12-06 22:52:05,930 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 126 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:05,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 170 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:52:05,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-12-06 22:52:05,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 112. [2021-12-06 22:52:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 95 states have (on average 1.2210526315789474) internal successors, (116), 97 states have internal predecessors, (116), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-06 22:52:05,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 138 transitions. [2021-12-06 22:52:05,945 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 138 transitions. Word has length 40 [2021-12-06 22:52:05,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:05,946 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 138 transitions. [2021-12-06 22:52:05,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 22:52:05,946 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 138 transitions. [2021-12-06 22:52:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 22:52:05,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:05,947 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:05,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:52:06,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 22:52:06,149 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:06,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:06,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1706965193, now seen corresponding path program 2 times [2021-12-06 22:52:06,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:06,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860070148] [2021-12-06 22:52:06,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:06,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:06,177 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:52:06,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1196094862] [2021-12-06 22:52:06,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:52:06,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:06,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:52:06,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:52:06,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:52:06,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:52:06,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:52:06,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:52:06,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:52:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:52:06,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:52:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:52:06,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:06,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860070148] [2021-12-06 22:52:06,376 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:52:06,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196094862] [2021-12-06 22:52:06,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196094862] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:52:06,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:52:06,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 22:52:06,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937140703] [2021-12-06 22:52:06,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:52:06,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:52:06,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:06,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:52:06,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:52:06,378 INFO L87 Difference]: Start difference. First operand 112 states and 138 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:52:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:06,533 INFO L93 Difference]: Finished difference Result 206 states and 253 transitions. [2021-12-06 22:52:06,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:52:06,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-12-06 22:52:06,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:06,535 INFO L225 Difference]: With dead ends: 206 [2021-12-06 22:52:06,535 INFO L226 Difference]: Without dead ends: 172 [2021-12-06 22:52:06,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:52:06,536 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 136 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:06,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 121 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:52:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-12-06 22:52:06,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 121. [2021-12-06 22:52:06,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 106 states have internal predecessors, (124), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-06 22:52:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 146 transitions. [2021-12-06 22:52:06,550 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 146 transitions. Word has length 42 [2021-12-06 22:52:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:06,550 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 146 transitions. [2021-12-06 22:52:06,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:52:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 146 transitions. [2021-12-06 22:52:06,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 22:52:06,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:06,552 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:06,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:52:06,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 22:52:06,754 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:06,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:06,755 INFO L85 PathProgramCache]: Analyzing trace with hash 460196979, now seen corresponding path program 3 times [2021-12-06 22:52:06,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:06,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484240748] [2021-12-06 22:52:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:06,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:06,787 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:52:06,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232281652] [2021-12-06 22:52:06,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:52:06,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:06,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:52:06,791 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:52:06,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:52:06,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 22:52:06,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:52:06,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 22:52:06,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:52:07,038 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 0 case distinctions, treesize of input 168 treesize of output 159 [2021-12-06 22:52:07,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 170 [2021-12-06 22:52:07,068 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 27 treesize of output 3 [2021-12-06 22:52:07,089 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 25 treesize of output 3 [2021-12-06 22:52:07,100 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 25 treesize of output 3 [2021-12-06 22:52:07,309 INFO L354 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2021-12-06 22:52:07,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 57 [2021-12-06 22:52:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 22:52:07,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:52:08,138 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 165 treesize of output 157 [2021-12-06 22:52:08,157 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:52:08,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 157 treesize of output 170 [2021-12-06 22:52:08,186 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 26 treesize of output 4 [2021-12-06 22:52:08,204 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-06 22:52:08,227 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 28 treesize of output 4 [2021-12-06 22:52:08,241 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 24 treesize of output 4 [2021-12-06 22:52:08,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:52:08,304 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:52:08,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 96 [2021-12-06 22:52:08,444 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 26 treesize of output 4 [2021-12-06 22:52:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 22:52:17,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:17,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484240748] [2021-12-06 22:52:17,701 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:52:17,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232281652] [2021-12-06 22:52:17,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232281652] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:52:17,701 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:52:17,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 28 [2021-12-06 22:52:17,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023036172] [2021-12-06 22:52:17,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:52:17,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 22:52:17,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:17,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 22:52:17,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2021-12-06 22:52:17,702 INFO L87 Difference]: Start difference. First operand 121 states and 146 transitions. Second operand has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 26 states have internal predecessors, (59), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 22:52:22,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:22,341 INFO L93 Difference]: Finished difference Result 157 states and 192 transitions. [2021-12-06 22:52:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 22:52:22,342 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 26 states have internal predecessors, (59), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 42 [2021-12-06 22:52:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:22,343 INFO L225 Difference]: With dead ends: 157 [2021-12-06 22:52:22,343 INFO L226 Difference]: Without dead ends: 153 [2021-12-06 22:52:22,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=309, Invalid=1583, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 22:52:22,344 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 100 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:22,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 149 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 368 Invalid, 0 Unknown, 122 Unchecked, 1.8s Time] [2021-12-06 22:52:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-06 22:52:22,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 81. [2021-12-06 22:52:22,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 72 states have internal predecessors, (85), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 22:52:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2021-12-06 22:52:22,357 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 42 [2021-12-06 22:52:22,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:22,357 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2021-12-06 22:52:22,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 26 states have internal predecessors, (59), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 22:52:22,357 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2021-12-06 22:52:22,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 22:52:22,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:22,358 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:22,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:52:22,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:22,559 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:22,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:22,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1406472713, now seen corresponding path program 2 times [2021-12-06 22:52:22,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:22,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389140961] [2021-12-06 22:52:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:22,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:22,584 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:52:22,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431275828] [2021-12-06 22:52:22,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:52:22,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:22,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:52:22,585 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:52:22,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:52:22,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:52:22,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:52:22,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:52:22,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:52:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 22:52:22,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:52:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 22:52:22,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:22,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389140961] [2021-12-06 22:52:22,778 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:52:22,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431275828] [2021-12-06 22:52:22,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431275828] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:52:22,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:52:22,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-06 22:52:22,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362898378] [2021-12-06 22:52:22,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:52:22,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:52:22,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:22,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:52:22,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:52:22,780 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:52:22,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:22,947 INFO L93 Difference]: Finished difference Result 152 states and 187 transitions. [2021-12-06 22:52:22,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:52:22,947 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2021-12-06 22:52:22,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:22,948 INFO L225 Difference]: With dead ends: 152 [2021-12-06 22:52:22,948 INFO L226 Difference]: Without dead ends: 111 [2021-12-06 22:52:22,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:52:22,949 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:22,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 106 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:52:22,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-06 22:52:22,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2021-12-06 22:52:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 86 states have internal predecessors, (103), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 22:52:22,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2021-12-06 22:52:22,960 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 42 [2021-12-06 22:52:22,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:22,960 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2021-12-06 22:52:22,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:52:22,960 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2021-12-06 22:52:22,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 22:52:22,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:22,961 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:22,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:52:23,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:23,163 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:23,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:23,164 INFO L85 PathProgramCache]: Analyzing trace with hash 822903975, now seen corresponding path program 4 times [2021-12-06 22:52:23,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:23,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445384388] [2021-12-06 22:52:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:23,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:23,188 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:52:23,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150700465] [2021-12-06 22:52:23,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 22:52:23,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:23,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:52:23,192 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:52:23,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:52:23,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 22:52:23,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:52:23,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:52:23,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:52:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 22:52:23,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:52:23,371 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 22:52:23,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:23,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445384388] [2021-12-06 22:52:23,371 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:52:23,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150700465] [2021-12-06 22:52:23,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150700465] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:52:23,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:52:23,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 22:52:23,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349888709] [2021-12-06 22:52:23,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:52:23,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:52:23,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:23,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:52:23,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:52:23,373 INFO L87 Difference]: Start difference. First operand 95 states and 115 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:52:23,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:23,508 INFO L93 Difference]: Finished difference Result 114 states and 133 transitions. [2021-12-06 22:52:23,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:52:23,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2021-12-06 22:52:23,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:23,509 INFO L225 Difference]: With dead ends: 114 [2021-12-06 22:52:23,509 INFO L226 Difference]: Without dead ends: 75 [2021-12-06 22:52:23,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:52:23,510 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 80 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:23,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 102 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:52:23,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-06 22:52:23,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2021-12-06 22:52:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:52:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2021-12-06 22:52:23,518 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 45 [2021-12-06 22:52:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:23,518 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2021-12-06 22:52:23,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:52:23,518 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2021-12-06 22:52:23,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 22:52:23,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:23,519 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:23,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:52:23,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:23,720 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:23,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1727010197, now seen corresponding path program 3 times [2021-12-06 22:52:23,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:23,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353279274] [2021-12-06 22:52:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:23,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:23,750 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:52:23,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1510293376] [2021-12-06 22:52:23,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:52:23,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:23,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:52:23,751 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:52:23,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 22:52:23,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 22:52:23,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:52:23,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 22:52:23,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:52:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 22:52:23,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:52:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 22:52:24,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:24,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353279274] [2021-12-06 22:52:24,205 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:52:24,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510293376] [2021-12-06 22:52:24,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510293376] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:52:24,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:52:24,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2021-12-06 22:52:24,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145239546] [2021-12-06 22:52:24,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:52:24,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 22:52:24,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:24,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 22:52:24,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:52:24,207 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:52:24,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:24,530 INFO L93 Difference]: Finished difference Result 127 states and 151 transitions. [2021-12-06 22:52:24,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 22:52:24,531 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2021-12-06 22:52:24,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:24,532 INFO L225 Difference]: With dead ends: 127 [2021-12-06 22:52:24,532 INFO L226 Difference]: Without dead ends: 123 [2021-12-06 22:52:24,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2021-12-06 22:52:24,533 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 145 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:24,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 148 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:52:24,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-06 22:52:24,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 64. [2021-12-06 22:52:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.206896551724138) internal successors, (70), 58 states have internal predecessors, (70), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:52:24,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2021-12-06 22:52:24,540 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 49 [2021-12-06 22:52:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:24,541 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2021-12-06 22:52:24,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:52:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2021-12-06 22:52:24,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 22:52:24,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:24,541 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:24,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 22:52:24,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:24,743 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:24,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:24,744 INFO L85 PathProgramCache]: Analyzing trace with hash 538416053, now seen corresponding path program 5 times [2021-12-06 22:52:24,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:24,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439895461] [2021-12-06 22:52:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:24,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:24,755 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:52:24,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261848159] [2021-12-06 22:52:24,755 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 22:52:24,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:24,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:52:24,756 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:52:24,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 22:52:25,517 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-06 22:52:25,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:52:25,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:52:25,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:52:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:52:25,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:52:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 22:52:25,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:25,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439895461] [2021-12-06 22:52:25,659 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:52:25,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261848159] [2021-12-06 22:52:25,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261848159] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:52:25,659 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:52:25,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 22:52:25,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47148022] [2021-12-06 22:52:25,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:52:25,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:52:25,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:52:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:52:25,661 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:52:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:25,833 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2021-12-06 22:52:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:52:25,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2021-12-06 22:52:25,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:25,835 INFO L225 Difference]: With dead ends: 71 [2021-12-06 22:52:25,835 INFO L226 Difference]: Without dead ends: 60 [2021-12-06 22:52:25,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:52:25,835 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 57 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:25,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 91 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:52:25,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-06 22:52:25,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2021-12-06 22:52:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:52:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2021-12-06 22:52:25,841 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 54 [2021-12-06 22:52:25,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:25,842 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2021-12-06 22:52:25,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:52:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2021-12-06 22:52:25,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 22:52:25,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:25,842 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:25,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 22:52:26,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 22:52:26,044 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:26,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:26,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1673343477, now seen corresponding path program 6 times [2021-12-06 22:52:26,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:26,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963837135] [2021-12-06 22:52:26,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:26,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:26,072 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:52:26,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424490381] [2021-12-06 22:52:26,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 22:52:26,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:26,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:52:26,077 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:52:26,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 22:52:27,335 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-12-06 22:52:27,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:52:27,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 83 conjunts are in the unsatisfiable core [2021-12-06 22:52:27,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:52:27,389 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 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-06 22:52:27,394 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 22:52:27,401 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:52:27,476 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 0 case distinctions, treesize of input 75 treesize of output 68 [2021-12-06 22:52:27,498 INFO L354 Elim1Store]: treesize reduction 124, result has 17.9 percent of original size [2021-12-06 22:52:27,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 87 [2021-12-06 22:52:27,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:27,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 40 treesize of output 17 [2021-12-06 22:52:27,548 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-12-06 22:52:27,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 22 [2021-12-06 22:52:27,820 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 0 case distinctions, treesize of input 99 treesize of output 90 [2021-12-06 22:52:27,868 INFO L354 Elim1Store]: treesize reduction 335, result has 17.5 percent of original size [2021-12-06 22:52:27,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 134 [2021-12-06 22:52:27,907 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:52:27,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:27,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:27,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:27,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 46 [2021-12-06 22:52:28,095 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 0 case distinctions, treesize of input 81 treesize of output 70 [2021-12-06 22:52:28,149 INFO L354 Elim1Store]: treesize reduction 272, result has 15.8 percent of original size [2021-12-06 22:52:28,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 69 treesize of output 107 [2021-12-06 22:52:28,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:28,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:28,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:28,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:28,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:28,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:28,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 32 [2021-12-06 22:52:38,582 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 0 case distinctions, treesize of input 105 treesize of output 92 [2021-12-06 22:52:38,839 INFO L354 Elim1Store]: treesize reduction 455, result has 21.6 percent of original size [2021-12-06 22:52:38,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 91 treesize of output 194 [2021-12-06 22:52:39,019 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:52:39,272 INFO L354 Elim1Store]: treesize reduction 181, result has 10.0 percent of original size [2021-12-06 22:52:39,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 232 treesize of output 183 [2021-12-06 22:52:44,185 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 0 case distinctions, treesize of input 280 treesize of output 255 [2021-12-06 22:52:46,682 INFO L354 Elim1Store]: treesize reduction 1574, result has 13.6 percent of original size [2021-12-06 22:52:46,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 258 treesize of output 447 [2021-12-06 22:52:46,710 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 22:52:49,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,548 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:52:49,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 262 treesize of output 220 [2021-12-06 22:52:49,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 164 [2021-12-06 22:52:49,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:49,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:52:50,030 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:52:50,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 240 treesize of output 173 [2021-12-06 22:53:05,077 INFO L354 Elim1Store]: treesize reduction 1001, result has 15.8 percent of original size [2021-12-06 22:53:05,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 248 treesize of output 243 [2021-12-06 22:53:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 11 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:53:11,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:54:05,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:54:05,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963837135] [2021-12-06 22:54:05,503 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:54:05,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424490381] [2021-12-06 22:54:05,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424490381] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:54:05,503 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:54:05,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2021-12-06 22:54:05,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953527896] [2021-12-06 22:54:05,504 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 22:54:05,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 22:54:05,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:54:05,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 22:54:05,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=2664, Unknown=21, NotChecked=0, Total=3080 [2021-12-06 22:54:05,505 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 37 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 36 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:54:05,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:05,914 INFO L93 Difference]: Finished difference Result 104 states and 124 transitions. [2021-12-06 22:54:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-06 22:54:05,915 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 36 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2021-12-06 22:54:05,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:05,916 INFO L225 Difference]: With dead ends: 104 [2021-12-06 22:54:05,916 INFO L226 Difference]: Without dead ends: 100 [2021-12-06 22:54:05,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 79.6s TimeCoverageRelationStatistics Valid=427, Invalid=2858, Unknown=21, NotChecked=0, Total=3306 [2021-12-06 22:54:05,917 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 328 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:05,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 318 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 328 Unchecked, 0.0s Time] [2021-12-06 22:54:05,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-06 22:54:05,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2021-12-06 22:54:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 85 states have (on average 1.188235294117647) internal successors, (101), 85 states have internal predecessors, (101), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 22:54:05,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2021-12-06 22:54:05,928 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 58 [2021-12-06 22:54:05,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:05,928 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2021-12-06 22:54:05,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 36 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 22:54:05,929 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2021-12-06 22:54:05,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 22:54:05,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:05,929 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:05,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 22:54:06,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 22:54:06,131 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:54:06,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:06,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1539329971, now seen corresponding path program 1 times [2021-12-06 22:54:06,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:54:06,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171107246] [2021-12-06 22:54:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:06,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:54:06,160 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:54:06,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797385485] [2021-12-06 22:54:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:06,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:54:06,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:54:06,163 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:54:06,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 22:54:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:06,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:54:06,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:06,264 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-06 22:54:06,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:06,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:54:06,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171107246] [2021-12-06 22:54:06,264 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:54:06,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797385485] [2021-12-06 22:54:06,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797385485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:06,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:06,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:54:06,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846676614] [2021-12-06 22:54:06,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:06,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:54:06,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:54:06,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:54:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:54:06,266 INFO L87 Difference]: Start difference. First operand 94 states and 111 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:06,299 INFO L93 Difference]: Finished difference Result 151 states and 177 transitions. [2021-12-06 22:54:06,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:54:06,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2021-12-06 22:54:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:06,301 INFO L225 Difference]: With dead ends: 151 [2021-12-06 22:54:06,301 INFO L226 Difference]: Without dead ends: 117 [2021-12-06 22:54:06,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:54:06,302 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:06,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 73 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:54:06,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-06 22:54:06,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 94. [2021-12-06 22:54:06,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 85 states have (on average 1.1764705882352942) internal successors, (100), 85 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 22:54:06,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 110 transitions. [2021-12-06 22:54:06,315 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 110 transitions. Word has length 58 [2021-12-06 22:54:06,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:06,315 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 110 transitions. [2021-12-06 22:54:06,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:54:06,315 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 110 transitions. [2021-12-06 22:54:06,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 22:54:06,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:06,316 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:06,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 22:54:06,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 22:54:06,518 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:54:06,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:06,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1758184689, now seen corresponding path program 4 times [2021-12-06 22:54:06,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:54:06,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025830917] [2021-12-06 22:54:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:06,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:54:06,547 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:54:06,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860981192] [2021-12-06 22:54:06,548 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 22:54:06,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:54:06,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:54:06,550 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:54:06,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8e03260-f792-4dda-aaf3-b6c2538bfda3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 22:54:07,235 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 22:54:07,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:54:07,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-06 22:54:07,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:07,281 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 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-06 22:54:07,286 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 22:54:07,294 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:54:07,367 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 0 case distinctions, treesize of input 79 treesize of output 72 [2021-12-06 22:54:07,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:54:07,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 93 [2021-12-06 22:54:07,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 48 treesize of output 21 [2021-12-06 22:54:07,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 67 treesize of output 26 [2021-12-06 22:54:07,575 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 0 case distinctions, treesize of input 76 treesize of output 67 [2021-12-06 22:54:07,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 88 [2021-12-06 22:54:07,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2021-12-06 22:54:07,727 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 0 case distinctions, treesize of input 79 treesize of output 68 [2021-12-06 22:54:07,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 103 [2021-12-06 22:54:07,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:07,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 19 [2021-12-06 22:54:08,280 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 0 case distinctions, treesize of input 133 treesize of output 116 [2021-12-06 22:54:08,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,463 INFO L354 Elim1Store]: treesize reduction 479, result has 25.7 percent of original size [2021-12-06 22:54:08,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 115 treesize of output 235 [2021-12-06 22:54:08,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,524 INFO L354 Elim1Store]: treesize reduction 127, result has 43.0 percent of original size [2021-12-06 22:54:08,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 194 treesize of output 225 [2021-12-06 22:54:08,730 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 0 case distinctions, treesize of input 286 treesize of output 265 [2021-12-06 22:54:08,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:08,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,410 INFO L354 Elim1Store]: treesize reduction 1489, result has 35.0 percent of original size [2021-12-06 22:54:09,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 31 case distinctions, treesize of input 268 treesize of output 1012 [2021-12-06 22:54:09,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,596 INFO L354 Elim1Store]: treesize reduction 217, result has 43.2 percent of original size [2021-12-06 22:54:09,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 305 treesize of output 380 [2021-12-06 22:54:09,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:09,859 INFO L354 Elim1Store]: treesize reduction 242, result has 43.7 percent of original size [2021-12-06 22:54:09,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 305 treesize of output 403 [2021-12-06 22:54:10,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 176 [2021-12-06 22:54:10,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,205 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:54:10,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 224 [2021-12-06 22:54:10,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:10,476 INFO L354 Elim1Store]: treesize reduction 295, result has 37.0 percent of original size [2021-12-06 22:54:10,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 485 treesize of output 504 [2021-12-06 22:54:16,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:16,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:16,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:16,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:16,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:16,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:16,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:16,572 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:54:16,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 242 treesize of output 423 [2021-12-06 22:54:17,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 153 [2021-12-06 22:54:17,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:17,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 149 [2021-12-06 22:54:18,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:18,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:18,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:18,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:18,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:18,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:18,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:18,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:18,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:18,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:18,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 55 [2021-12-06 22:54:20,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,175 INFO L354 Elim1Store]: treesize reduction 172, result has 41.3 percent of original size [2021-12-06 22:54:20,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 155 treesize of output 188 [2021-12-06 22:54:20,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 55 [2021-12-06 22:54:20,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:20,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 56 [2021-12-06 22:54:21,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:21,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:21,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:21,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:54:21,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:21,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:21,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:21,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:21,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:21,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:54:21,702 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:54:21,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 83 treesize of output 35 [2021-12-06 22:54:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:54:21,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:54:31,668 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 55 treesize of output 51 [2021-12-06 22:54:31,727 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:54:31,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 58 [2021-12-06 22:54:31,760 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-06 22:54:31,790 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 19 treesize of output 4 [2021-12-06 22:54:31,952 INFO L354 Elim1Store]: treesize reduction 102, result has 44.9 percent of original size [2021-12-06 22:54:31,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 363778 treesize of output 340295