./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array6_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array6_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL --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 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:08:47,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:08:47,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:08:47,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:08:47,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:08:47,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:08:47,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:08:47,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:08:47,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:08:47,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:08:47,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:08:47,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:08:47,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:08:47,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:08:47,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:08:47,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:08:47,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:08:47,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:08:47,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:08:47,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:08:47,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:08:47,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:08:47,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:08:47,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:08:47,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:08:47,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:08:47,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:08:47,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:08:47,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:08:47,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:08:47,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:08:47,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:08:47,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:08:47,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:08:47,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:08:47,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:08:47,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:08:47,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:08:47,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:08:47,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:08:47,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:08:47,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:08:47,769 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:08:47,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:08:47,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:08:47,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:08:47,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:08:47,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:08:47,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:08:47,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:08:47,780 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:08:47,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:08:47,782 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:08:47,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:08:47,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:08:47,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:08:47,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:08:47,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:08:47,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:08:47,784 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:08:47,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:08:47,784 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:08:47,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:08:47,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:08:47,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:08:47,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:08:47,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:08:47,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:08:47,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:08:47,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:08:47,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:08:47,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:08:47,790 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:08:47,790 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:08:47,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:08:47,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:08:47,791 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_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 [2021-11-19 05:08:48,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:08:48,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:08:48,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:08:48,179 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:08:48,180 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:08:48,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/array-patterns/array6_pattern.c [2021-11-19 05:08:48,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/data/48d776397/922ca280908d4a478fa528ca1c37769e/FLAG186c3ea11 [2021-11-19 05:08:48,876 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:08:48,877 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/sv-benchmarks/c/array-patterns/array6_pattern.c [2021-11-19 05:08:48,885 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/data/48d776397/922ca280908d4a478fa528ca1c37769e/FLAG186c3ea11 [2021-11-19 05:08:49,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/data/48d776397/922ca280908d4a478fa528ca1c37769e [2021-11-19 05:08:49,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:08:49,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:08:49,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:08:49,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:08:49,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:08:49,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:08:49" (1/1) ... [2021-11-19 05:08:49,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5919a3f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:49, skipping insertion in model container [2021-11-19 05:08:49,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:08:49" (1/1) ... [2021-11-19 05:08:49,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:08:49,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:08:49,454 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_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/sv-benchmarks/c/array-patterns/array6_pattern.c[1356,1369] [2021-11-19 05:08:49,502 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:08:49,525 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:08:49,549 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_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/sv-benchmarks/c/array-patterns/array6_pattern.c[1356,1369] [2021-11-19 05:08:49,583 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:08:49,603 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:08:49,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:49 WrapperNode [2021-11-19 05:08:49,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:08:49,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:08:49,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:08:49,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:08:49,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:49" (1/1) ... [2021-11-19 05:08:49,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:49" (1/1) ... [2021-11-19 05:08:49,684 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2021-11-19 05:08:49,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:08:49,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:08:49,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:08:49,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:08:49,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:49" (1/1) ... [2021-11-19 05:08:49,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:49" (1/1) ... [2021-11-19 05:08:49,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:49" (1/1) ... [2021-11-19 05:08:49,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:49" (1/1) ... [2021-11-19 05:08:49,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:49" (1/1) ... [2021-11-19 05:08:49,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:49" (1/1) ... [2021-11-19 05:08:49,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:49" (1/1) ... [2021-11-19 05:08:49,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:08:49,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:08:49,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:08:49,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:08:49,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:49" (1/1) ... [2021-11-19 05:08:49,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:08:49,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:08:49,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:08:49,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:08:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:08:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 05:08:49,870 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 05:08:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:08:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:08:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 05:08:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:08:49,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:08:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 05:08:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:08:49,972 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:08:49,974 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:08:50,195 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:08:50,203 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:08:50,203 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 05:08:50,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:50 BoogieIcfgContainer [2021-11-19 05:08:50,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:08:50,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:08:50,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:08:50,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:08:50,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:08:49" (1/3) ... [2021-11-19 05:08:50,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8ee91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:50, skipping insertion in model container [2021-11-19 05:08:50,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:49" (2/3) ... [2021-11-19 05:08:50,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8ee91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:50, skipping insertion in model container [2021-11-19 05:08:50,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:50" (3/3) ... [2021-11-19 05:08:50,218 INFO L111 eAbstractionObserver]: Analyzing ICFG array6_pattern.c [2021-11-19 05:08:50,224 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:08:50,238 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:08:50,333 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:08:50,342 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 [2021-11-19 05:08:50,343 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:08:50,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:08:50,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 05:08:50,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:50,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:50,373 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:08:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:50,381 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2021-11-19 05:08:50,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:50,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883651232] [2021-11-19 05:08:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:50,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:50,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:08:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:50,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:50,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883651232] [2021-11-19 05:08:50,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883651232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:50,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:50,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:08:50,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136402266] [2021-11-19 05:08:50,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:50,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:08:50,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:50,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:08:50,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:08:50,713 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 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) [2021-11-19 05:08:50,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:50,735 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2021-11-19 05:08:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:08:50,737 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 [2021-11-19 05:08:50,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:50,746 INFO L225 Difference]: With dead ends: 47 [2021-11-19 05:08:50,746 INFO L226 Difference]: Without dead ends: 21 [2021-11-19 05:08:50,750 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 [2021-11-19 05:08:50,756 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:50,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:08:50,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-19 05:08:50,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-19 05:08:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:08:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-11-19 05:08:50,809 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2021-11-19 05:08:50,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:50,809 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-11-19 05:08:50,810 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) [2021-11-19 05:08:50,810 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-11-19 05:08:50,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 05:08:50,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:50,813 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:50,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:08:50,814 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:08:50,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:50,815 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2021-11-19 05:08:50,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:50,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162536047] [2021-11-19 05:08:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:50,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:50,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:08:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:51,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 05:08:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:08:51,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:51,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162536047] [2021-11-19 05:08:51,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162536047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:51,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:51,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:08:51,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600514696] [2021-11-19 05:08:51,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:51,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:08:51,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:51,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:08:51,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:08:51,028 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:08:51,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:51,068 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-11-19 05:08:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:08:51,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-11-19 05:08:51,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:51,074 INFO L225 Difference]: With dead ends: 26 [2021-11-19 05:08:51,074 INFO L226 Difference]: Without dead ends: 22 [2021-11-19 05:08:51,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:08:51,077 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 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 [2021-11-19 05:08:51,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:08:51,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-19 05:08:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-19 05:08:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:08:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-19 05:08:51,090 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2021-11-19 05:08:51,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:51,095 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-19 05:08:51,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:08:51,096 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-19 05:08:51,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 05:08:51,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:51,103 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:51,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:08:51,103 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:08:51,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:51,104 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2021-11-19 05:08:51,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:51,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928175353] [2021-11-19 05:08:51,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:51,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:51,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 05:08:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:51,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-19 05:08:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:08:51,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:51,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928175353] [2021-11-19 05:08:51,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928175353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:08:51,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:08:51,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:08:51,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196274909] [2021-11-19 05:08:51,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:08:51,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:08:51,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:51,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:08:51,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:08:51,279 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:08:51,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:51,331 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2021-11-19 05:08:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:08:51,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-11-19 05:08:51,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:51,333 INFO L225 Difference]: With dead ends: 41 [2021-11-19 05:08:51,333 INFO L226 Difference]: Without dead ends: 25 [2021-11-19 05:08:51,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:08:51,336 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:51,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 55 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:08:51,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-19 05:08:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-11-19 05:08:51,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:08:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-11-19 05:08:51,344 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2021-11-19 05:08:51,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:51,345 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-11-19 05:08:51,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:08:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-11-19 05:08:51,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 05:08:51,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:51,347 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:51,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:08:51,348 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:08:51,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:51,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2021-11-19 05:08:51,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:51,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318233180] [2021-11-19 05:08:51,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:51,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:51,367 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 05:08:51,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781555637] [2021-11-19 05:08:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:51,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:08:51,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:08:51,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:08:51,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 05:08:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:51,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 05:08:51,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:08:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:08:51,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:08:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:08:52,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:52,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318233180] [2021-11-19 05:08:52,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 05:08:52,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781555637] [2021-11-19 05:08:52,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781555637] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:08:52,052 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:08:52,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-11-19 05:08:52,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653681237] [2021-11-19 05:08:52,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:08:52,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:08:52,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:52,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:08:52,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:08:52,055 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:08:52,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:52,429 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2021-11-19 05:08:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 05:08:52,430 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2021-11-19 05:08:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:52,437 INFO L225 Difference]: With dead ends: 71 [2021-11-19 05:08:52,438 INFO L226 Difference]: Without dead ends: 43 [2021-11-19 05:08:52,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:08:52,444 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 61 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:52,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 86 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:08:52,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-19 05:08:52,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2021-11-19 05:08:52,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:08:52,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-11-19 05:08:52,471 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 26 [2021-11-19 05:08:52,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:52,472 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-11-19 05:08:52,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:08:52,472 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-11-19 05:08:52,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 05:08:52,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:52,474 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:52,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:08:52,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:08:52,702 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:08:52,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:52,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1559224519, now seen corresponding path program 2 times [2021-11-19 05:08:52,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:52,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245036731] [2021-11-19 05:08:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:52,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:52,720 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 05:08:52,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649063630] [2021-11-19 05:08:52,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:08:52,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:08:52,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:08:52,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:08:52,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 05:08:52,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:08:52,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:08:52,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:08:52,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:08:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:53,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:08:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:08:53,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:08:53,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245036731] [2021-11-19 05:08:53,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 05:08:53,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649063630] [2021-11-19 05:08:53,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649063630] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:08:53,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:08:53,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-11-19 05:08:53,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803217983] [2021-11-19 05:08:53,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:08:53,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:08:53,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:08:53,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:08:53,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:08:53,222 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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) [2021-11-19 05:08:53,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:53,443 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2021-11-19 05:08:53,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:08:53,444 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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) Word has length 30 [2021-11-19 05:08:53,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:53,448 INFO L225 Difference]: With dead ends: 39 [2021-11-19 05:08:53,448 INFO L226 Difference]: Without dead ends: 35 [2021-11-19 05:08:53,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-11-19 05:08:53,453 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 66 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:53,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 95 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:08:53,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-19 05:08:53,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-19 05:08:53,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:08:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-11-19 05:08:53,473 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 30 [2021-11-19 05:08:53,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:53,474 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-11-19 05:08:53,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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) [2021-11-19 05:08:53,475 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-11-19 05:08:53,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 05:08:53,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:53,477 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:53,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:08:53,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:08:53,702 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:08:53,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:53,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1722352949, now seen corresponding path program 3 times [2021-11-19 05:08:53,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:08:53,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802271242] [2021-11-19 05:08:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:53,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:08:53,717 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 05:08:53,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618450078] [2021-11-19 05:08:53,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 05:08:53,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:08:53,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:08:53,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:08:53,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 05:08:53,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 05:08:53,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:08:53,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-19 05:08:53,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:08:54,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-19 05:08:54,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:08:54,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2021-11-19 05:08:54,304 INFO L354 Elim1Store]: treesize reduction 54, result has 21.7 percent of original size [2021-11-19 05:08:54,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 52 [2021-11-19 05:08:54,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:08:54,728 INFO L354 Elim1Store]: treesize reduction 426, result has 10.1 percent of original size [2021-11-19 05:08:54,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 83 treesize of output 78 [2021-11-19 05:08:58,030 INFO L354 Elim1Store]: treesize reduction 3678, result has 9.6 percent of original size [2021-11-19 05:08:58,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 64 case distinctions, treesize of input 583 treesize of output 597 [2021-11-19 05:08:58,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,537 INFO L244 Elim1Store]: Index analysis took 107 ms [2021-11-19 05:08:58,553 INFO L354 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2021-11-19 05:08:58,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 4 case distinctions, treesize of input 229 treesize of output 153 [2021-11-19 05:08:58,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:58,943 INFO L354 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2021-11-19 05:08:58,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 4 case distinctions, treesize of input 445 treesize of output 280 [2021-11-19 05:08:59,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:08:59,070 INFO L354 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2021-11-19 05:08:59,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 4 case distinctions, treesize of input 302 treesize of output 171 [2021-11-19 05:09:01,138 INFO L354 Elim1Store]: treesize reduction 980, result has 17.9 percent of original size [2021-11-19 05:09:01,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 132 treesize of output 260 [2021-11-19 05:09:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:03,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:09:17,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:17,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802271242] [2021-11-19 05:09:17,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 05:09:17,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618450078] [2021-11-19 05:09:17,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618450078] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:09:17,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:09:17,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-11-19 05:09:17,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293325039] [2021-11-19 05:09:17,068 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 05:09:17,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 05:09:17,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:17,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 05:09:17,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=829, Unknown=4, NotChecked=0, Total=992 [2021-11-19 05:09:17,071 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:09:17,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:17,436 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-11-19 05:09:17,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 05:09:17,437 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-11-19 05:09:17,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:17,438 INFO L225 Difference]: With dead ends: 59 [2021-11-19 05:09:17,438 INFO L226 Difference]: Without dead ends: 55 [2021-11-19 05:09:17,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=177, Invalid=1009, Unknown=4, NotChecked=0, Total=1190 [2021-11-19 05:09:17,441 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:17,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 194 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2021-11-19 05:09:17,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-19 05:09:17,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2021-11-19 05:09:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:09:17,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-11-19 05:09:17,454 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 34 [2021-11-19 05:09:17,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:17,455 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-11-19 05:09:17,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:09:17,455 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-11-19 05:09:17,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 05:09:17,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:17,457 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:17,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:09:17,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:17,663 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:09:17,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:17,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1565541619, now seen corresponding path program 4 times [2021-11-19 05:09:17,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:17,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798395105] [2021-11-19 05:09:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:17,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:17,701 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 05:09:17,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099493161] [2021-11-19 05:09:17,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 05:09:17,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:17,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:09:17,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:09:17,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 05:09:17,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 05:09:17,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:09:17,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 05:09:17,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:09:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:18,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:09:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:09:18,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:18,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798395105] [2021-11-19 05:09:18,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 05:09:18,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099493161] [2021-11-19 05:09:18,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099493161] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:09:18,206 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:09:18,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-11-19 05:09:18,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238442110] [2021-11-19 05:09:18,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:09:18,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 05:09:18,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:18,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 05:09:18,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:09:18,208 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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) [2021-11-19 05:09:18,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:18,414 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-11-19 05:09:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:09:18,415 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 36 [2021-11-19 05:09:18,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:18,416 INFO L225 Difference]: With dead ends: 67 [2021-11-19 05:09:18,416 INFO L226 Difference]: Without dead ends: 45 [2021-11-19 05:09:18,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:09:18,418 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 78 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:18,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 91 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:09:18,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-19 05:09:18,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2021-11-19 05:09:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:09:18,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-11-19 05:09:18,427 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 36 [2021-11-19 05:09:18,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:18,428 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-11-19 05:09:18,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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) [2021-11-19 05:09:18,428 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-11-19 05:09:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 05:09:18,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:18,430 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:18,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:09:18,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-19 05:09:18,646 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:09:18,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash -956776499, now seen corresponding path program 5 times [2021-11-19 05:09:18,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:18,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637582866] [2021-11-19 05:09:18,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:18,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:18,656 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 05:09:18,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685964638] [2021-11-19 05:09:18,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 05:09:18,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:18,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:09:18,658 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:09:18,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 05:09:18,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-19 05:09:18,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:09:18,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 05:09:18,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:09:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:18,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:09:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:09:19,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:19,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637582866] [2021-11-19 05:09:19,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 05:09:19,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685964638] [2021-11-19 05:09:19,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685964638] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:09:19,115 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:09:19,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-11-19 05:09:19,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404970582] [2021-11-19 05:09:19,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:09:19,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 05:09:19,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 05:09:19,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:09:19,117 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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) [2021-11-19 05:09:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:19,378 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2021-11-19 05:09:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 05:09:19,378 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 36 [2021-11-19 05:09:19,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:19,379 INFO L225 Difference]: With dead ends: 44 [2021-11-19 05:09:19,379 INFO L226 Difference]: Without dead ends: 40 [2021-11-19 05:09:19,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2021-11-19 05:09:19,381 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:19,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 95 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:09:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-19 05:09:19,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-11-19 05:09:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:09:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-11-19 05:09:19,388 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 36 [2021-11-19 05:09:19,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:19,388 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-11-19 05:09:19,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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) [2021-11-19 05:09:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-11-19 05:09:19,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:09:19,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:19,390 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:19,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-19 05:09:19,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:19,618 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:09:19,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:19,619 INFO L85 PathProgramCache]: Analyzing trace with hash -285980785, now seen corresponding path program 6 times [2021-11-19 05:09:19,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:19,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702519880] [2021-11-19 05:09:19,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:19,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:19,628 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 05:09:19,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699138474] [2021-11-19 05:09:19,628 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 05:09:19,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:19,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:09:19,633 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:09:19,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 05:09:19,909 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-11-19 05:09:19,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:09:19,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-19 05:09:19,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:09:19,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-19 05:09:19,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:19,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2021-11-19 05:09:20,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2021-11-19 05:09:20,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:20,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:20,295 INFO L354 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2021-11-19 05:09:20,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 99 treesize of output 89 [2021-11-19 05:09:20,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:20,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:20,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:20,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:20,558 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-11-19 05:09:20,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 112 treesize of output 113 [2021-11-19 05:09:21,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:21,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:21,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:21,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:21,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:21,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:21,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:21,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:21,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:21,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:21,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:21,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:23,887 INFO L354 Elim1Store]: treesize reduction 5168, result has 8.1 percent of original size [2021-11-19 05:09:23,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 16 new quantified variables, introduced 118 case distinctions, treesize of input 611 treesize of output 671 [2021-11-19 05:09:24,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:24,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:24,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 13 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 434 treesize of output 222 [2021-11-19 05:09:24,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,612 INFO L354 Elim1Store]: treesize reduction 114, result has 0.9 percent of original size [2021-11-19 05:09:24,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 23 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 8 case distinctions, treesize of input 454 treesize of output 1 [2021-11-19 05:09:24,677 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 05:09:24,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:24,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:24,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:24,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 13 disjoint index pairs (out of 55 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 445 treesize of output 227 [2021-11-19 05:09:24,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:24,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:24,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:24,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:24,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:24,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 13 disjoint index pairs (out of 66 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 437 treesize of output 221 [2021-11-19 05:09:27,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 704 treesize of output 632 [2021-11-19 05:09:27,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:27,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:27,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:27,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:27,451 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-19 05:09:27,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 501 treesize of output 305 [2021-11-19 05:09:29,124 INFO L354 Elim1Store]: treesize reduction 148, result has 36.5 percent of original size [2021-11-19 05:09:29,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 161 treesize of output 153 [2021-11-19 05:09:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:30,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:09:33,362 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~count~0#1_77| Int)) (or (<= c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~count~0#1_77|) (< (+ |v_ULTIMATE.start_main_~count~0#1_77| 1) c_~ARR_SIZE~0) (= (let ((.cse5 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse6 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse5) (+ (select .cse6 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse5 4)) (select .cse6 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse5 (- 4))))))))) (let ((.cse0 (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#array2~0#1.base|))) (store .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse5) (+ (select .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse5 (- 4))) (select .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse5 4))))))) (let ((.cse1 (select (store .cse3 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse2 (* |v_ULTIMATE.start_main_~count~0#1_77| 4))) (+ (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse2)) (select .cse1 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse2))))))) 0))) is different from false [2021-11-19 05:09:42,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:42,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702519880] [2021-11-19 05:09:42,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 05:09:42,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699138474] [2021-11-19 05:09:42,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699138474] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:09:42,234 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:09:42,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-11-19 05:09:42,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549110033] [2021-11-19 05:09:42,234 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 05:09:42,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-19 05:09:42,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:42,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-19 05:09:42,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=955, Unknown=2, NotChecked=64, Total=1190 [2021-11-19 05:09:42,237 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 22 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:09:43,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:43,432 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2021-11-19 05:09:43,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 05:09:43,433 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 22 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2021-11-19 05:09:43,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:43,434 INFO L225 Difference]: With dead ends: 66 [2021-11-19 05:09:43,434 INFO L226 Difference]: Without dead ends: 62 [2021-11-19 05:09:43,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=227, Invalid=1335, Unknown=2, NotChecked=76, Total=1640 [2021-11-19 05:09:43,436 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 28 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:43,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 147 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 289 Invalid, 0 Unknown, 93 Unchecked, 0.6s Time] [2021-11-19 05:09:43,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-19 05:09:43,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2021-11-19 05:09:43,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:09:43,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-11-19 05:09:43,449 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 38 [2021-11-19 05:09:43,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:43,450 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-11-19 05:09:43,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 22 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:09:43,450 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-11-19 05:09:43,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 05:09:43,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:43,452 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:43,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:09:43,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:43,678 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:09:43,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:43,679 INFO L85 PathProgramCache]: Analyzing trace with hash 103605969, now seen corresponding path program 7 times [2021-11-19 05:09:43,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:43,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030109339] [2021-11-19 05:09:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:43,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:43,688 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 05:09:43,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783780784] [2021-11-19 05:09:43,689 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 05:09:43,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:43,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:09:43,690 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:09:43,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 05:09:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:43,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 05:09:43,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:09:43,985 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:43,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:09:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:09:44,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:44,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030109339] [2021-11-19 05:09:44,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 05:09:44,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783780784] [2021-11-19 05:09:44,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783780784] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:09:44,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:09:44,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2021-11-19 05:09:44,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903173312] [2021-11-19 05:09:44,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:09:44,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 05:09:44,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:44,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 05:09:44,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:09:44,166 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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) [2021-11-19 05:09:44,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:44,417 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2021-11-19 05:09:44,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:09:44,418 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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 40 [2021-11-19 05:09:44,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:44,419 INFO L225 Difference]: With dead ends: 95 [2021-11-19 05:09:44,419 INFO L226 Difference]: Without dead ends: 79 [2021-11-19 05:09:44,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-11-19 05:09:44,421 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 86 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:44,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 115 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:09:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-19 05:09:44,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2021-11-19 05:09:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:09:44,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-11-19 05:09:44,435 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 40 [2021-11-19 05:09:44,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:44,436 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-11-19 05:09:44,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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) [2021-11-19 05:09:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-11-19 05:09:44,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 05:09:44,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:44,438 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:44,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 05:09:44,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-19 05:09:44,655 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:09:44,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:44,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1011334033, now seen corresponding path program 8 times [2021-11-19 05:09:44,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:44,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716267355] [2021-11-19 05:09:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:44,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:44,663 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 05:09:44,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503102946] [2021-11-19 05:09:44,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:09:44,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:44,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:09:44,682 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:09:44,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 05:09:44,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:09:44,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:09:44,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 05:09:44,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:09:44,964 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:44,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:09:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:09:45,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:45,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716267355] [2021-11-19 05:09:45,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 05:09:45,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503102946] [2021-11-19 05:09:45,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503102946] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:09:45,174 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:09:45,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2021-11-19 05:09:45,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832696858] [2021-11-19 05:09:45,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:09:45,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 05:09:45,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:45,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 05:09:45,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:09:45,178 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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) [2021-11-19 05:09:45,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:45,626 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2021-11-19 05:09:45,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 05:09:45,627 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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 40 [2021-11-19 05:09:45,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:45,628 INFO L225 Difference]: With dead ends: 78 [2021-11-19 05:09:45,628 INFO L226 Difference]: Without dead ends: 74 [2021-11-19 05:09:45,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2021-11-19 05:09:45,630 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 38 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:45,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 187 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:09:45,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-19 05:09:45,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2021-11-19 05:09:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:09:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-11-19 05:09:45,658 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 40 [2021-11-19 05:09:45,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:45,659 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-11-19 05:09:45,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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) [2021-11-19 05:09:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-11-19 05:09:45,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-19 05:09:45,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:45,663 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:45,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 05:09:45,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-19 05:09:45,878 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:09:45,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:45,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1282630227, now seen corresponding path program 9 times [2021-11-19 05:09:45,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:45,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920157788] [2021-11-19 05:09:45,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:45,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:45,887 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 05:09:45,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950089657] [2021-11-19 05:09:45,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 05:09:45,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:45,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:09:45,891 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:09:45,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-19 05:09:46,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-19 05:09:46,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:09:46,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-19 05:09:46,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:09:46,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-19 05:09:46,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:46,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2021-11-19 05:09:46,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 70 [2021-11-19 05:09:46,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:46,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:46,504 INFO L354 Elim1Store]: treesize reduction 37, result has 26.0 percent of original size [2021-11-19 05:09:46,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 78 treesize of output 71 [2021-11-19 05:09:46,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:46,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:46,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:46,839 INFO L354 Elim1Store]: treesize reduction 547, result has 10.6 percent of original size [2021-11-19 05:09:46,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 108 treesize of output 104 [2021-11-19 05:09:47,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:47,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:47,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:47,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:47,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:47,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:47,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:47,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:47,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:47,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:47,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:47,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:47,418 INFO L354 Elim1Store]: treesize reduction 727, result has 8.2 percent of original size [2021-11-19 05:09:47,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 241 treesize of output 147 [2021-11-19 05:09:50,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:50,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:50,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:50,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:50,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:50,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:54,576 INFO L354 Elim1Store]: treesize reduction 6544, result has 11.0 percent of original size [2021-11-19 05:09:54,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 14 select indices, 14 select index equivalence classes, 3 disjoint index pairs (out of 91 index pairs), introduced 18 new quantified variables, introduced 151 case distinctions, treesize of input 751 treesize of output 1055 [2021-11-19 05:09:54,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:54,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:54,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:54,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:54,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:54,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:54,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:54,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:54,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:54,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:54,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:55,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,045 INFO L244 Elim1Store]: Index analysis took 133 ms [2021-11-19 05:09:55,112 INFO L354 Elim1Store]: treesize reduction 159, result has 7.6 percent of original size [2021-11-19 05:09:55,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 19 disjoint index pairs (out of 91 index pairs), introduced 12 new quantified variables, introduced 14 case distinctions, treesize of input 262 treesize of output 174 [2021-11-19 05:09:55,411 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 05:09:55,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:55,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:55,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:55,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:55,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:55,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 13 disjoint index pairs (out of 78 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 253 treesize of output 159 [2021-11-19 05:09:55,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:55,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:55,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:55,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:55,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:55,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 13 disjoint index pairs (out of 66 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 154 [2021-11-19 05:09:56,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:56,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:56,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:56,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:56,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:56,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:56,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:56,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 7 disjoint index pairs (out of 78 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 253 treesize of output 159 [2021-11-19 05:09:56,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:56,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:56,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:56,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:56,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:56,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:56,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:56,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 7 disjoint index pairs (out of 66 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 154 [2021-11-19 05:09:56,865 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 05:09:56,947 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 05:09:57,272 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 05:09:57,323 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 05:09:57,410 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 05:09:57,566 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 05:09:57,630 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 05:09:58,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:58,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:58,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:58,321 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-19 05:09:58,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 29 disjoint index pairs (out of 105 index pairs), introduced 12 new quantified variables, introduced 2 case distinctions, treesize of input 281 treesize of output 169 [2021-11-19 05:09:58,623 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 05:09:58,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:58,940 INFO L244 Elim1Store]: Index analysis took 211 ms [2021-11-19 05:09:59,020 INFO L354 Elim1Store]: treesize reduction 226, result has 5.4 percent of original size [2021-11-19 05:09:59,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 41 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 16 case distinctions, treesize of input 290 treesize of output 184 [2021-11-19 05:09:59,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:59,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:59,593 INFO L244 Elim1Store]: Index analysis took 126 ms [2021-11-19 05:09:59,610 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-19 05:09:59,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 29 disjoint index pairs (out of 91 index pairs), introduced 12 new quantified variables, introduced 2 case distinctions, treesize of input 270 treesize of output 164 [2021-11-19 05:09:59,900 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 05:09:59,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:09:59,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:09:59,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:10:00,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:10:00,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:10:00,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:10:00,069 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-19 05:10:00,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 19 disjoint index pairs (out of 105 index pairs), introduced 10 new quantified variables, introduced 4 case distinctions, treesize of input 281 treesize of output 169 [2021-11-19 05:10:00,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:10:00,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:10:00,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:10:00,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:00,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:10:00,496 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-19 05:10:00,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 19 disjoint index pairs (out of 91 index pairs), introduced 10 new quantified variables, introduced 4 case distinctions, treesize of input 270 treesize of output 164 [2021-11-19 05:10:00,598 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 05:10:23,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:23,704 INFO L244 Elim1Store]: Index analysis took 203 ms [2021-11-19 05:10:23,930 INFO L354 Elim1Store]: treesize reduction 296, result has 18.9 percent of original size [2021-11-19 05:10:23,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 33 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 24 case distinctions, treesize of input 349 treesize of output 291 [2021-11-19 05:10:24,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:10:24,418 INFO L354 Elim1Store]: treesize reduction 296, result has 18.9 percent of original size [2021-11-19 05:10:24,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 33 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 24 case distinctions, treesize of input 401 treesize of output 264 [2021-11-19 05:11:59,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:11:59,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:11:59,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:11:59,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:02,253 INFO L354 Elim1Store]: treesize reduction 1676, result has 20.1 percent of original size [2021-11-19 05:12:02,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 10 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 244 treesize of output 540 [2021-11-19 05:12:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:12:20,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:12:33,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:12:33,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920157788] [2021-11-19 05:12:33,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 05:12:33,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950089657] [2021-11-19 05:12:33,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950089657] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:12:33,028 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:12:33,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-11-19 05:12:33,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058361153] [2021-11-19 05:12:33,028 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-19 05:12:33,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-19 05:12:33,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:12:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-19 05:12:33,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1581, Unknown=2, NotChecked=0, Total=1806 [2021-11-19 05:12:33,031 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 27 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:12:35,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:12:35,100 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2021-11-19 05:12:35,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-19 05:12:35,100 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 27 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2021-11-19 05:12:35,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:12:35,102 INFO L225 Difference]: With dead ends: 99 [2021-11-19 05:12:35,102 INFO L226 Difference]: Without dead ends: 95 [2021-11-19 05:12:35,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=268, Invalid=1986, Unknown=2, NotChecked=0, Total=2256 [2021-11-19 05:12:35,105 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:12:35,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 280 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 90 Invalid, 0 Unknown, 174 Unchecked, 0.3s Time] [2021-11-19 05:12:35,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-19 05:12:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 80. [2021-11-19 05:12:35,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 69 states have internal predecessors, (75), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-19 05:12:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2021-11-19 05:12:35,134 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 42 [2021-11-19 05:12:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:12:35,134 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2021-11-19 05:12:35,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 27 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:12:35,135 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2021-11-19 05:12:35,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 05:12:35,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:12:35,136 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:12:35,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-19 05:12:35,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-19 05:12:35,346 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:12:35,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:12:35,347 INFO L85 PathProgramCache]: Analyzing trace with hash 5267605, now seen corresponding path program 10 times [2021-11-19 05:12:35,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:12:35,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842766240] [2021-11-19 05:12:35,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:12:35,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:12:35,356 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 05:12:35,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [254201685] [2021-11-19 05:12:35,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 05:12:35,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:12:35,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:12:35,370 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:12:35,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 05:12:35,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 05:12:35,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:12:35,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 05:12:35,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:12:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 40 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:12:35,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:12:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 05:12:36,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:12:36,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842766240] [2021-11-19 05:12:36,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 05:12:36,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254201685] [2021-11-19 05:12:36,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254201685] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:12:36,278 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:12:36,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2021-11-19 05:12:36,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614392012] [2021-11-19 05:12:36,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:12:36,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 05:12:36,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:12:36,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 05:12:36,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:12:36,280 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 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) [2021-11-19 05:12:37,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:12:37,221 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2021-11-19 05:12:37,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 05:12:37,223 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 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 44 [2021-11-19 05:12:37,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:12:37,224 INFO L225 Difference]: With dead ends: 153 [2021-11-19 05:12:37,225 INFO L226 Difference]: Without dead ends: 135 [2021-11-19 05:12:37,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 05:12:37,227 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 88 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:12:37,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 202 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:12:37,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-19 05:12:37,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 101. [2021-11-19 05:12:37,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 86 states have (on average 1.0930232558139534) internal successors, (94), 86 states have internal predecessors, (94), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-19 05:12:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2021-11-19 05:12:37,260 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 44 [2021-11-19 05:12:37,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:12:37,261 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2021-11-19 05:12:37,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 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) [2021-11-19 05:12:37,261 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2021-11-19 05:12:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 05:12:37,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:12:37,262 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:12:37,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-19 05:12:37,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-19 05:12:37,463 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:12:37,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:12:37,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1257303952, now seen corresponding path program 1 times [2021-11-19 05:12:37,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:12:37,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790634344] [2021-11-19 05:12:37,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:12:37,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:12:37,481 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 05:12:37,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024747885] [2021-11-19 05:12:37,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:12:37,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:12:37,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:12:37,494 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:12:37,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc91bf6f-209e-4d2c-b6f6-e8a2c1f76377/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-19 05:12:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:12:37,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-19 05:12:37,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:12:37,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-19 05:12:37,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:37,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2021-11-19 05:12:37,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:37,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:37,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:37,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2021-11-19 05:12:38,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:38,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:38,143 INFO L354 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2021-11-19 05:12:38,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 99 treesize of output 89 [2021-11-19 05:12:38,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:38,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:38,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:38,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:38,540 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-11-19 05:12:38,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 112 treesize of output 113 [2021-11-19 05:12:39,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:39,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:39,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:39,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:39,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:39,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:39,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:39,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:39,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:39,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:39,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:39,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:42,523 INFO L354 Elim1Store]: treesize reduction 5167, result has 8.1 percent of original size [2021-11-19 05:12:42,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 16 new quantified variables, introduced 118 case distinctions, treesize of input 611 treesize of output 672 [2021-11-19 05:12:42,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:42,696 INFO L354 Elim1Store]: treesize reduction 51, result has 10.5 percent of original size [2021-11-19 05:12:42,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 4 case distinctions, treesize of input 377 treesize of output 189 [2021-11-19 05:12:42,950 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-19 05:12:43,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:43,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:43,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:43,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:43,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:43,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:43,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:43,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:43,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:43,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:43,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:43,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:43,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:43,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:43,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:43,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 13 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 332 treesize of output 162 [2021-11-19 05:12:45,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:45,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:45,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:45,246 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-19 05:12:45,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 594 treesize of output 480 [2021-11-19 05:12:45,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:45,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:45,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:45,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:45,413 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-19 05:12:45,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 407 treesize of output 279 [2021-11-19 05:12:47,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:47,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:47,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:47,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:47,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:47,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:47,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:47,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:47,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:47,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:47,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:47,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:47,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:47,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:47,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:47,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:47,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:12:47,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:47,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:12:47,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:17:27,415 WARN L227 SmtUtils]: Spent 4.66m on a formula simplification. DAG size of input: 2413 DAG size of output: 675 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 05:17:27,420 INFO L354 Elim1Store]: treesize reduction 17185, result has 15.3 percent of original size [2021-11-19 05:17:27,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 44 select indices, 44 select index equivalence classes, 6 disjoint index pairs (out of 946 index pairs), introduced 48 new quantified variables, introduced 1126 case distinctions, treesize of input 995 treesize of output 3482 [2021-11-19 05:21:43,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:21:43,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:21:43,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:21:43,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:21:43,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:21:43,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:21:43,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 05:21:43,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:21:43,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:21:43,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:21:45,210 INFO L354 Elim1Store]: treesize reduction 1048, result has 9.1 percent of original size [2021-11-19 05:21:45,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 42 select indices, 42 select index equivalence classes, 11 disjoint index pairs (out of 861 index pairs), introduced 36 new quantified variables, introduced 773 case distinctions, treesize of input 8365 treesize of output 7087