./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c377c3922cafbc07c158cb252290a97b70e1cbfc6e9de773d7729c460f56857 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:36:27,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:36:27,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:36:27,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:36:27,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:36:27,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:36:27,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:36:27,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:36:27,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:36:27,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:36:27,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:36:27,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:36:27,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:36:27,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:36:27,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:36:27,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:36:27,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:36:27,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:36:27,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:36:27,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:36:27,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:36:27,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:36:27,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:36:27,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:36:27,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:36:27,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:36:27,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:36:27,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:36:27,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:36:27,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:36:27,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:36:27,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:36:27,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:36:27,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:36:27,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:36:27,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:36:27,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:36:27,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:36:27,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:36:27,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:36:27,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:36:27,730 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:36:27,754 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:36:27,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:36:27,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:36:27,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:36:27,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:36:27,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:36:27,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:36:27,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:36:27,756 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:36:27,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:36:27,757 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:36:27,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:36:27,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:36:27,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:36:27,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:36:27,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:36:27,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:36:27,758 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:36:27,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:36:27,758 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:36:27,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:36:27,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:36:27,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:36:27,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:36:27,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:36:27,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:36:27,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:36:27,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:36:27,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:36:27,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:36:27,760 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:36:27,760 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:36:27,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:36:27,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:36:27,761 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_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c377c3922cafbc07c158cb252290a97b70e1cbfc6e9de773d7729c460f56857 [2021-12-07 01:36:27,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:36:27,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:36:27,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:36:27,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:36:27,965 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:36:27,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-fpi/ifeqn1.c [2021-12-07 01:36:28,008 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/data/68fd65e20/acc25da5f4814425807643002b0c0476/FLAGe26723b03 [2021-12-07 01:36:28,405 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:36:28,405 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/sv-benchmarks/c/array-fpi/ifeqn1.c [2021-12-07 01:36:28,409 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/data/68fd65e20/acc25da5f4814425807643002b0c0476/FLAGe26723b03 [2021-12-07 01:36:28,419 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/data/68fd65e20/acc25da5f4814425807643002b0c0476 [2021-12-07 01:36:28,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:36:28,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:36:28,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:36:28,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:36:28,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:36:28,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:36:28" (1/1) ... [2021-12-07 01:36:28,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa1430a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:28, skipping insertion in model container [2021-12-07 01:36:28,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:36:28" (1/1) ... [2021-12-07 01:36:28,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:36:28,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:36:28,539 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_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/sv-benchmarks/c/array-fpi/ifeqn1.c[589,602] [2021-12-07 01:36:28,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:36:28,559 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:36:28,568 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_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/sv-benchmarks/c/array-fpi/ifeqn1.c[589,602] [2021-12-07 01:36:28,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:36:28,584 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:36:28,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:28 WrapperNode [2021-12-07 01:36:28,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:36:28,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:36:28,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:36:28,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:36:28,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:28" (1/1) ... [2021-12-07 01:36:28,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:28" (1/1) ... [2021-12-07 01:36:28,613 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-12-07 01:36:28,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:36:28,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:36:28,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:36:28,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:36:28,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:28" (1/1) ... [2021-12-07 01:36:28,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:28" (1/1) ... [2021-12-07 01:36:28,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:28" (1/1) ... [2021-12-07 01:36:28,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:28" (1/1) ... [2021-12-07 01:36:28,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:28" (1/1) ... [2021-12-07 01:36:28,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:28" (1/1) ... [2021-12-07 01:36:28,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:28" (1/1) ... [2021-12-07 01:36:28,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:36:28,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:36:28,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:36:28,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:36:28,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:28" (1/1) ... [2021-12-07 01:36:28,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:36:28,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:28,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:36:28,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:36:28,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:36:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:36:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:36:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 01:36:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:36:28,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:36:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 01:36:28,752 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:36:28,753 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:36:28,866 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:36:28,870 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:36:28,871 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-07 01:36:28,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:36:28 BoogieIcfgContainer [2021-12-07 01:36:28,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:36:28,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:36:28,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:36:28,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:36:28,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:36:28" (1/3) ... [2021-12-07 01:36:28,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef9d85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:36:28, skipping insertion in model container [2021-12-07 01:36:28,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:28" (2/3) ... [2021-12-07 01:36:28,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef9d85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:36:28, skipping insertion in model container [2021-12-07 01:36:28,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:36:28" (3/3) ... [2021-12-07 01:36:28,879 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn1.c [2021-12-07 01:36:28,883 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:36:28,883 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:36:28,919 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:36:28,925 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 01:36:28,925 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:36:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:28,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-07 01:36:28,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:28,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:28,943 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:36:28,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:28,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2021-12-07 01:36:28,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:28,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220742402] [2021-12-07 01:36:28,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:28,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:36:29,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:29,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220742402] [2021-12-07 01:36:29,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220742402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:29,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:29,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:36:29,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995345291] [2021-12-07 01:36:29,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:29,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:36:29,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:29,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:36:29,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:36:29,113 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:29,124 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-12-07 01:36:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:36:29,126 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-07 01:36:29,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:29,134 INFO L225 Difference]: With dead ends: 42 [2021-12-07 01:36:29,134 INFO L226 Difference]: Without dead ends: 19 [2021-12-07 01:36:29,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:36:29,140 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:29,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:29,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-07 01:36:29,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-07 01:36:29,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-12-07 01:36:29,174 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-12-07 01:36:29,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:29,175 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-12-07 01:36:29,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:29,175 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-12-07 01:36:29,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-07 01:36:29,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:29,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:29,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:36:29,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:36:29,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:29,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2021-12-07 01:36:29,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:29,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876371637] [2021-12-07 01:36:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:29,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:36:29,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:29,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876371637] [2021-12-07 01:36:29,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876371637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:29,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:29,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:36:29,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260189657] [2021-12-07 01:36:29,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:29,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:36:29,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:29,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:36:29,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:36:29,258 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:29,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:29,315 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2021-12-07 01:36:29,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:36:29,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-07 01:36:29,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:29,316 INFO L225 Difference]: With dead ends: 45 [2021-12-07 01:36:29,316 INFO L226 Difference]: Without dead ends: 31 [2021-12-07 01:36:29,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:36:29,318 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 37 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:29,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 17 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:29,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-07 01:36:29,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-12-07 01:36:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:29,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-12-07 01:36:29,323 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2021-12-07 01:36:29,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:29,324 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-12-07 01:36:29,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:29,324 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-12-07 01:36:29,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-07 01:36:29,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:29,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:29,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:36:29,325 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:36:29,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:29,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2021-12-07 01:36:29,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:29,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035206483] [2021-12-07 01:36:29,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:29,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:29,347 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:36:29,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545119584] [2021-12-07 01:36:29,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:29,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:29,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:29,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:29,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:36:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:29,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 01:36:29,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:29,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 01:36:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:36:29,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:36:29,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:29,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035206483] [2021-12-07 01:36:29,531 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:36:29,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545119584] [2021-12-07 01:36:29,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545119584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:29,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:29,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:36:29,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690148927] [2021-12-07 01:36:29,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:29,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:36:29,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:29,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:36:29,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:36:29,532 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:29,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:29,578 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-12-07 01:36:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:36:29,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-07 01:36:29,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:29,579 INFO L225 Difference]: With dead ends: 40 [2021-12-07 01:36:29,579 INFO L226 Difference]: Without dead ends: 38 [2021-12-07 01:36:29,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:36:29,580 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:29,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 62 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:29,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-07 01:36:29,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2021-12-07 01:36:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-12-07 01:36:29,585 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2021-12-07 01:36:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:29,586 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-12-07 01:36:29,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-12-07 01:36:29,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-07 01:36:29,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:29,587 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:29,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:36:29,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:29,788 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:36:29,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:29,791 INFO L85 PathProgramCache]: Analyzing trace with hash 259417010, now seen corresponding path program 1 times [2021-12-07 01:36:29,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:29,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970700109] [2021-12-07 01:36:29,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:29,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:29,871 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:36:29,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742975700] [2021-12-07 01:36:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:29,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:29,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:29,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:29,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:36:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:29,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:36:29,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:36:30,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:30,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:36:30,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:30,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970700109] [2021-12-07 01:36:30,083 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:36:30,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742975700] [2021-12-07 01:36:30,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742975700] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:30,083 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:36:30,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-07 01:36:30,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522311401] [2021-12-07 01:36:30,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:30,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 01:36:30,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:30,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 01:36:30,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:36:30,084 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:30,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:30,187 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2021-12-07 01:36:30,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:36:30,188 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-07 01:36:30,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:30,188 INFO L225 Difference]: With dead ends: 70 [2021-12-07 01:36:30,189 INFO L226 Difference]: Without dead ends: 43 [2021-12-07 01:36:30,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:36:30,190 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:30,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 44 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:36:30,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-07 01:36:30,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2021-12-07 01:36:30,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:30,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-12-07 01:36:30,194 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2021-12-07 01:36:30,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:30,194 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-12-07 01:36:30,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:30,194 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-12-07 01:36:30,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-07 01:36:30,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:30,195 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:30,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:36:30,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:30,397 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:36:30,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:30,399 INFO L85 PathProgramCache]: Analyzing trace with hash 939318754, now seen corresponding path program 1 times [2021-12-07 01:36:30,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:30,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344450142] [2021-12-07 01:36:30,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:30,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:30,474 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:36:30,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777677971] [2021-12-07 01:36:30,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:30,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:30,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:30,476 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:30,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:36:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:30,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-07 01:36:30,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:30,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 01:36:30,607 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-07 01:36:30,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-07 01:36:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:36:30,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:30,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-12-07 01:36:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 01:36:30,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:30,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344450142] [2021-12-07 01:36:30,833 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:36:30,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777677971] [2021-12-07 01:36:30,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777677971] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:30,833 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:36:30,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2021-12-07 01:36:30,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716956234] [2021-12-07 01:36:30,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:30,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 01:36:30,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:30,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 01:36:30,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:36:30,834 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:30,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:30,965 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2021-12-07 01:36:30,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 01:36:30,965 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-07 01:36:30,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:30,966 INFO L225 Difference]: With dead ends: 73 [2021-12-07 01:36:30,966 INFO L226 Difference]: Without dead ends: 61 [2021-12-07 01:36:30,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:36:30,967 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:30,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 71 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 80 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2021-12-07 01:36:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-07 01:36:30,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 38. [2021-12-07 01:36:30,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2021-12-07 01:36:30,973 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 24 [2021-12-07 01:36:30,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:30,973 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2021-12-07 01:36:30,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:30,974 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2021-12-07 01:36:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 01:36:30,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:30,975 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:31,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:36:31,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:31,177 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:36:31,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:31,179 INFO L85 PathProgramCache]: Analyzing trace with hash 430403928, now seen corresponding path program 1 times [2021-12-07 01:36:31,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:31,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658650306] [2021-12-07 01:36:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:31,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:31,249 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:36:31,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304938550] [2021-12-07 01:36:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:31,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:31,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:31,253 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:31,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:36:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:31,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-07 01:36:31,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:31,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-07 01:36:31,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 01:36:31,527 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-07 01:36:31,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-07 01:36:31,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-07 01:36:31,625 INFO L354 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2021-12-07 01:36:31,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 32 [2021-12-07 01:36:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:36:31,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:36:45,888 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~b~0#1.offset| Int)) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |ULTIMATE.start_main_~b~0#1.offset| 1)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-12-07 01:36:47,922 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (and (or (< 2147483647 .cse0) (forall ((|ULTIMATE.start_main_~b~0#1.offset| Int) (v_ArrVal_112 Int)) (= 2 (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_112)))) (store .cse1 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~b~0#1.base|) |ULTIMATE.start_main_~b~0#1.offset| 1))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (or (<= .cse0 2147483647) (forall ((|ULTIMATE.start_main_~b~0#1.offset| Int) (v_ArrVal_112 Int)) (= 2 (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_112)))) (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~b~0#1.base|) |ULTIMATE.start_main_~b~0#1.offset| 1))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))))) is different from false [2021-12-07 01:36:48,899 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (forall ((|ULTIMATE.start_main_~b~0#1.offset| Int) (v_ArrVal_112 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_112)))) (store .cse0 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) |ULTIMATE.start_main_~b~0#1.offset| 1))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)) (<= .cse1 2147483647)) (or (forall ((|ULTIMATE.start_main_~b~0#1.offset| Int) (v_ArrVal_112 Int)) (= 2 (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_112)))) (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~b~0#1.base|) |ULTIMATE.start_main_~b~0#1.offset| 1))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< 2147483647 .cse1)))) is different from false [2021-12-07 01:36:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-12-07 01:36:50,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:50,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658650306] [2021-12-07 01:36:50,692 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:36:50,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304938550] [2021-12-07 01:36:50,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304938550] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:36:50,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:36:50,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2021-12-07 01:36:50,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966677066] [2021-12-07 01:36:50,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:36:50,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-07 01:36:50,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:50,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-07 01:36:50,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=271, Unknown=14, NotChecked=108, Total=462 [2021-12-07 01:36:50,694 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:01,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:37:01,848 INFO L93 Difference]: Finished difference Result 177 states and 208 transitions. [2021-12-07 01:37:01,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-07 01:37:01,848 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-07 01:37:01,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:37:01,849 INFO L225 Difference]: With dead ends: 177 [2021-12-07 01:37:01,850 INFO L226 Difference]: Without dead ends: 146 [2021-12-07 01:37:01,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 35 SyntacticMatches, 12 SemanticMatches, 37 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=310, Invalid=942, Unknown=20, NotChecked=210, Total=1482 [2021-12-07 01:37:01,851 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 167 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 311 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:37:01,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 215 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 312 Invalid, 0 Unknown, 311 Unchecked, 0.4s Time] [2021-12-07 01:37:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-07 01:37:01,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 74. [2021-12-07 01:37:01,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 73 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:01,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-12-07 01:37:01,860 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 28 [2021-12-07 01:37:01,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:37:01,860 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-12-07 01:37:01,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-12-07 01:37:01,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 01:37:01,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:37:01,862 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:37:01,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 01:37:02,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-07 01:37:02,063 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:37:02,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:37:02,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1242204926, now seen corresponding path program 2 times [2021-12-07 01:37:02,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:37:02,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706318031] [2021-12-07 01:37:02,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:37:02,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:37:02,117 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:37:02,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932638439] [2021-12-07 01:37:02,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:37:02,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:02,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:37:02,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:37:02,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:37:02,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:37:02,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:37:02,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 01:37:02,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:37:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 01:37:02,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:37:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 01:37:02,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:37:02,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706318031] [2021-12-07 01:37:02,269 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:37:02,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932638439] [2021-12-07 01:37:02,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932638439] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:37:02,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:37:02,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-07 01:37:02,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215263688] [2021-12-07 01:37:02,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:37:02,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 01:37:02,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:37:02,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 01:37:02,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:37:02,271 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:37:02,370 INFO L93 Difference]: Finished difference Result 153 states and 182 transitions. [2021-12-07 01:37:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 01:37:02,371 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-07 01:37:02,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:37:02,372 INFO L225 Difference]: With dead ends: 153 [2021-12-07 01:37:02,372 INFO L226 Difference]: Without dead ends: 95 [2021-12-07 01:37:02,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-07 01:37:02,374 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 96 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:37:02,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 58 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:37:02,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-07 01:37:02,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 68. [2021-12-07 01:37:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.208955223880597) internal successors, (81), 67 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2021-12-07 01:37:02,386 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 30 [2021-12-07 01:37:02,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:37:02,386 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2021-12-07 01:37:02,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:02,386 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2021-12-07 01:37:02,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-07 01:37:02,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:37:02,387 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:37:02,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 01:37:02,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:02,589 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:37:02,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:37:02,590 INFO L85 PathProgramCache]: Analyzing trace with hash 939270440, now seen corresponding path program 2 times [2021-12-07 01:37:02,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:37:02,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448498539] [2021-12-07 01:37:02,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:37:02,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:37:02,644 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:37:02,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451871202] [2021-12-07 01:37:02,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:37:02,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:02,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:37:02,645 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:37:02,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 01:37:02,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:37:02,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:37:02,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 01:37:02,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:37:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:37:02,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:37:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:37:02,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:37:02,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448498539] [2021-12-07 01:37:02,787 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:37:02,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451871202] [2021-12-07 01:37:02,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451871202] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:37:02,787 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:37:02,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-07 01:37:02,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959534631] [2021-12-07 01:37:02,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:37:02,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 01:37:02,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:37:02,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 01:37:02,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:37:02,788 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:02,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:37:02,900 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2021-12-07 01:37:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 01:37:02,900 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-07 01:37:02,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:37:02,901 INFO L225 Difference]: With dead ends: 119 [2021-12-07 01:37:02,901 INFO L226 Difference]: Without dead ends: 58 [2021-12-07 01:37:02,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-07 01:37:02,902 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 94 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:37:02,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 64 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:37:02,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-12-07 01:37:02,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 39. [2021-12-07 01:37:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:02,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-12-07 01:37:02,908 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 31 [2021-12-07 01:37:02,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:37:02,908 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-12-07 01:37:02,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:02,908 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-12-07 01:37:02,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-07 01:37:02,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:37:02,909 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:37:02,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 01:37:03,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:03,110 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:37:03,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:37:03,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1847758638, now seen corresponding path program 3 times [2021-12-07 01:37:03,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:37:03,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852967645] [2021-12-07 01:37:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:37:03,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:37:03,133 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:37:03,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040610204] [2021-12-07 01:37:03,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:37:03,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:03,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:37:03,135 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:37:03,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 01:37:03,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-07 01:37:03,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:37:03,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 01:37:03,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:37:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:37:03,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:37:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:37:03,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:37:03,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852967645] [2021-12-07 01:37:03,493 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:37:03,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040610204] [2021-12-07 01:37:03,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040610204] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:37:03,493 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:37:03,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-12-07 01:37:03,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739444709] [2021-12-07 01:37:03,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:37:03,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-07 01:37:03,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:37:03,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 01:37:03,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:37:03,495 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:37:03,632 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2021-12-07 01:37:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 01:37:03,633 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-07 01:37:03,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:37:03,634 INFO L225 Difference]: With dead ends: 107 [2021-12-07 01:37:03,634 INFO L226 Difference]: Without dead ends: 94 [2021-12-07 01:37:03,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-12-07 01:37:03,635 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 138 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:37:03,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 80 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:37:03,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-07 01:37:03,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 61. [2021-12-07 01:37:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1) internal successors, (66), 60 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:03,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2021-12-07 01:37:03,644 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 33 [2021-12-07 01:37:03,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:37:03,645 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2021-12-07 01:37:03,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:03,645 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2021-12-07 01:37:03,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 01:37:03,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:37:03,646 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] [2021-12-07 01:37:03,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 01:37:03,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-07 01:37:03,847 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:37:03,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:37:03,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1646708229, now seen corresponding path program 3 times [2021-12-07 01:37:03,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:37:03,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200416490] [2021-12-07 01:37:03,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:37:03,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:37:03,867 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:37:03,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072303247] [2021-12-07 01:37:03,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:37:03,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:03,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:37:03,868 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:37:03,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 01:37:04,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-07 01:37:04,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:37:04,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-07 01:37:04,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:37:04,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-07 01:37:04,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 01:37:04,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2021-12-07 01:37:04,150 INFO L354 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2021-12-07 01:37:04,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 68 [2021-12-07 01:37:04,161 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:37:04,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:04,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 18 [2021-12-07 01:37:04,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:04,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17 [2021-12-07 01:37:04,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:04,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2021-12-07 01:37:04,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 59 [2021-12-07 01:37:04,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:04,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:04,297 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-12-07 01:37:04,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 78 [2021-12-07 01:37:04,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:04,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-12-07 01:37:04,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:04,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 29 [2021-12-07 01:37:04,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:04,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2021-12-07 01:37:04,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-12-07 01:37:04,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 156 [2021-12-07 01:37:04,880 INFO L354 Elim1Store]: treesize reduction 337, result has 12.9 percent of original size [2021-12-07 01:37:04,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 118 treesize of output 148 [2021-12-07 01:37:05,099 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-07 01:37:05,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 65 [2021-12-07 01:37:05,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 102 [2021-12-07 01:37:05,430 INFO L354 Elim1Store]: treesize reduction 172, result has 17.7 percent of original size [2021-12-07 01:37:05,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 95 treesize of output 113 [2021-12-07 01:37:05,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:05,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:05,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:05,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 52 [2021-12-07 01:37:05,743 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-07 01:37:05,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 30 [2021-12-07 01:37:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:37:05,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:37:18,453 WARN L227 SmtUtils]: Spent 5.39s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:37:31,843 INFO L354 Elim1Store]: treesize reduction 124, result has 23.9 percent of original size [2021-12-07 01:37:31,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 4670 treesize of output 2916 [2021-12-07 01:37:31,869 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:37:31,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3158 treesize of output 2984 [2021-12-07 01:37:31,895 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-12-07 01:37:31,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2756 treesize of output 2530 [2021-12-07 01:37:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:37:33,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:37:33,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200416490] [2021-12-07 01:37:33,717 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:37:33,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072303247] [2021-12-07 01:37:33,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072303247] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:37:33,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:37:33,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 41 [2021-12-07 01:37:33,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526240007] [2021-12-07 01:37:33,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:37:33,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-07 01:37:33,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:37:33,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-07 01:37:33,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1354, Unknown=14, NotChecked=0, Total=1640 [2021-12-07 01:37:33,719 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:37:34,390 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2021-12-07 01:37:34,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-07 01:37:34,390 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-07 01:37:34,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:37:34,391 INFO L225 Difference]: With dead ends: 71 [2021-12-07 01:37:34,391 INFO L226 Difference]: Without dead ends: 69 [2021-12-07 01:37:34,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=421, Invalid=1917, Unknown=14, NotChecked=0, Total=2352 [2021-12-07 01:37:34,393 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 32 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:37:34,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 99 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 90 Invalid, 0 Unknown, 112 Unchecked, 0.1s Time] [2021-12-07 01:37:34,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-07 01:37:34,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-12-07 01:37:34,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 67 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:34,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2021-12-07 01:37:34,401 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 34 [2021-12-07 01:37:34,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:37:34,402 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2021-12-07 01:37:34,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:34,402 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2021-12-07 01:37:34,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-07 01:37:34,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:37:34,403 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:37:34,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 01:37:34,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:34,604 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:37:34,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:37:34,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1259217666, now seen corresponding path program 4 times [2021-12-07 01:37:34,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:37:34,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552240240] [2021-12-07 01:37:34,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:37:34,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:37:34,654 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:37:34,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492314452] [2021-12-07 01:37:34,655 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:37:34,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:34,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:37:34,656 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:37:34,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 01:37:35,073 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:37:35,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:37:35,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-07 01:37:35,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:37:35,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 01:37:35,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2021-12-07 01:37:35,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:35,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:35,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:35,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60 [2021-12-07 01:37:35,157 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-07 01:37:35,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:35,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2021-12-07 01:37:35,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2021-12-07 01:37:35,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:35,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:35,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:35,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60 [2021-12-07 01:37:35,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:35,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2021-12-07 01:37:35,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:35,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-07 01:37:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:37:35,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:37:35,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 41 [2021-12-07 01:37:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-07 01:37:36,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:37:36,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552240240] [2021-12-07 01:37:36,029 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:37:36,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492314452] [2021-12-07 01:37:36,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492314452] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:37:36,029 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:37:36,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-12-07 01:37:36,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15597127] [2021-12-07 01:37:36,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:37:36,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-07 01:37:36,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:37:36,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-07 01:37:36,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-12-07 01:37:36,030 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:36,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:37:36,695 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2021-12-07 01:37:36,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-07 01:37:36,696 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-07 01:37:36,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:37:36,696 INFO L225 Difference]: With dead ends: 138 [2021-12-07 01:37:36,696 INFO L226 Difference]: Without dead ends: 136 [2021-12-07 01:37:36,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=238, Invalid=754, Unknown=0, NotChecked=0, Total=992 [2021-12-07 01:37:36,697 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 188 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:37:36,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 127 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 223 Invalid, 0 Unknown, 230 Unchecked, 0.2s Time] [2021-12-07 01:37:36,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-07 01:37:36,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 83. [2021-12-07 01:37:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1219512195121952) internal successors, (92), 82 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2021-12-07 01:37:36,705 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 36 [2021-12-07 01:37:36,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:37:36,705 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2021-12-07 01:37:36,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2021-12-07 01:37:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-07 01:37:36,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:37:36,706 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:37:36,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 01:37:36,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:36,907 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:37:36,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:37:36,909 INFO L85 PathProgramCache]: Analyzing trace with hash 180276683, now seen corresponding path program 4 times [2021-12-07 01:37:36,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:37:36,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759314120] [2021-12-07 01:37:36,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:37:36,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:37:36,931 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:37:36,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489709584] [2021-12-07 01:37:36,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:37:36,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:36,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:37:36,933 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:37:36,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 01:37:36,975 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:37:36,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:37:36,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 01:37:36,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:37:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:37:37,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:37:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:37:37,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:37:37,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759314120] [2021-12-07 01:37:37,098 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:37:37,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489709584] [2021-12-07 01:37:37,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489709584] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:37:37,099 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:37:37,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-12-07 01:37:37,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585567290] [2021-12-07 01:37:37,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:37:37,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-07 01:37:37,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:37:37,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 01:37:37,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:37:37,100 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:37:37,315 INFO L93 Difference]: Finished difference Result 115 states and 122 transitions. [2021-12-07 01:37:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 01:37:37,316 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-07 01:37:37,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:37:37,316 INFO L225 Difference]: With dead ends: 115 [2021-12-07 01:37:37,317 INFO L226 Difference]: Without dead ends: 102 [2021-12-07 01:37:37,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2021-12-07 01:37:37,318 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 133 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:37:37,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 135 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:37:37,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-07 01:37:37,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 76. [2021-12-07 01:37:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 75 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2021-12-07 01:37:37,325 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 37 [2021-12-07 01:37:37,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:37:37,325 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2021-12-07 01:37:37,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:37,325 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2021-12-07 01:37:37,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-07 01:37:37,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:37:37,326 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:37:37,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-07 01:37:37,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:37,526 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:37:37,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:37:37,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1129715953, now seen corresponding path program 5 times [2021-12-07 01:37:37,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:37:37,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911559387] [2021-12-07 01:37:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:37:37,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:37:37,537 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:37:37,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790423580] [2021-12-07 01:37:37,537 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:37:37,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:37:37,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:37:37,538 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:37:37,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 01:37:37,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-07 01:37:37,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:37:37,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-07 01:37:37,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:37:37,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-07 01:37:37,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 01:37:38,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 97 [2021-12-07 01:37:38,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:37:38,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 131 [2021-12-07 01:37:38,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 54 [2021-12-07 01:37:38,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,132 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 36 treesize of output 34 [2021-12-07 01:37:38,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-12-07 01:37:38,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 135 [2021-12-07 01:37:38,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:37:38,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 156 [2021-12-07 01:37:38,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 75 [2021-12-07 01:37:38,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:37:38,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 56 [2021-12-07 01:37:38,809 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-12-07 01:37:38,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 43 [2021-12-07 01:37:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:37:38,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:39:00,473 INFO L354 Elim1Store]: treesize reduction 74, result has 28.2 percent of original size [2021-12-07 01:39:00,474 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 62564 treesize of output 51072 [2021-12-07 01:39:00,808 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 01:39:00,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54134 treesize of output 51830 [2021-12-07 01:39:01,148 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-12-07 01:39:01,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55026 treesize of output 52972 [2021-12-07 01:39:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 31 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:39:03,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:39:03,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911559387] [2021-12-07 01:39:03,924 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:39:03,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790423580] [2021-12-07 01:39:03,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790423580] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:39:03,924 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:39:03,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2021-12-07 01:39:03,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356589477] [2021-12-07 01:39:03,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:39:03,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-07 01:39:03,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:39:03,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-07 01:39:03,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=998, Unknown=20, NotChecked=0, Total=1190 [2021-12-07 01:39:03,926 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:39:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:39:14,156 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2021-12-07 01:39:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-07 01:39:14,157 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-07 01:39:14,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:39:14,157 INFO L225 Difference]: With dead ends: 94 [2021-12-07 01:39:14,157 INFO L226 Difference]: Without dead ends: 70 [2021-12-07 01:39:14,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 78.3s TimeCoverageRelationStatistics Valid=395, Invalid=1747, Unknown=20, NotChecked=0, Total=2162 [2021-12-07 01:39:14,159 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 92 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:39:14,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 175 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 260 Invalid, 0 Unknown, 223 Unchecked, 1.0s Time] [2021-12-07 01:39:14,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-07 01:39:14,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2021-12-07 01:39:14,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:39:14,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2021-12-07 01:39:14,163 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 38 [2021-12-07 01:39:14,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:39:14,163 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2021-12-07 01:39:14,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:39:14,163 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2021-12-07 01:39:14,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-07 01:39:14,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:39:14,164 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:39:14,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-07 01:39:14,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-07 01:39:14,365 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:39:14,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:39:14,366 INFO L85 PathProgramCache]: Analyzing trace with hash 173090424, now seen corresponding path program 6 times [2021-12-07 01:39:14,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:39:14,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387434763] [2021-12-07 01:39:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:39:14,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:39:14,381 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:39:14,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634411009] [2021-12-07 01:39:14,381 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 01:39:14,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:39:14,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:39:14,382 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:39:14,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487e56ee-adfc-4c73-94c4-a3a3afae1bc6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 01:39:14,840 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-07 01:39:14,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:39:14,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-07 01:39:14,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:39:14,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-07 01:39:14,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-07 01:39:14,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 97 [2021-12-07 01:39:14,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:14,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:39:14,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:14,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:14,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:14,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:14,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:14,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 131 [2021-12-07 01:39:14,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:14,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:14,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:14,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 58 [2021-12-07 01:39:15,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 118 [2021-12-07 01:39:15,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 160 [2021-12-07 01:39:15,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 67 [2021-12-07 01:39:15,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2021-12-07 01:39:15,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2021-12-07 01:39:15,645 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-07 01:39:15,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 166 treesize of output 148 [2021-12-07 01:39:15,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:39:15,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 156 [2021-12-07 01:39:15,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 101 [2021-12-07 01:39:15,939 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-07 01:39:15,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 204 treesize of output 180 [2021-12-07 01:39:15,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:15,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 194 [2021-12-07 01:39:16,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 116 [2021-12-07 01:39:16,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:39:16,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:39:16,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:39:16,338 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-07 01:39:16,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 83 treesize of output 81 [2021-12-07 01:39:16,701 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-12-07 01:39:16,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 90 treesize of output 46 [2021-12-07 01:39:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:39:16,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:39:55,575 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (and (or (<= .cse0 2147483647) (forall ((v_ArrVal_453 Int) (v_ArrVal_460 Int) (v_ArrVal_458 Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_453)))) (let ((.cse5 (store (select .cse4 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~b~0#1.base| .cse5) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse1 (store .cse5 .cse2 (+ .cse3 1)))) (or (= 3 (select (store (store .cse1 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_458) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_460) .cse2)) (< v_ArrVal_458 (+ .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~b~0#1.base| .cse1) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1))))))))) (or (< 2147483647 .cse0) (forall ((v_ArrVal_453 Int) (v_ArrVal_460 Int) (v_ArrVal_458 Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_453)))) (let ((.cse10 (store (select .cse8 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse7 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse9 (select (select (store .cse8 |c_ULTIMATE.start_main_~b~0#1.base| .cse10) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse6 (store .cse10 .cse7 (+ .cse9 1)))) (or (= 3 (select (store (store .cse6 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_458) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_460) .cse7)) (< v_ArrVal_458 (+ (select (select (store .cse8 |c_ULTIMATE.start_main_~b~0#1.base| .cse6) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse9 1))))))))))) is different from false [2021-12-07 01:40:41,845 WARN L227 SmtUtils]: Spent 16.52s on a formula simplification. DAG size of input: 72 DAG size of output: 44 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:40:48,137 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_450 Int)) (or (let ((.cse2 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* .cse2 8))) (and (or (< v_ArrVal_450 (+ 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 34359738368))))) (<= .cse2 2147483647)) (or (< v_ArrVal_450 (+ 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)))) (< 2147483647 .cse2))))) (let ((.cse3 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (and (or (<= .cse3 2147483647) (forall ((v_ArrVal_453 Int) (v_ArrVal_460 Int) (v_ArrVal_458 Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_453)))) (let ((.cse8 (store (select .cse7 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse5 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse6 (select (select (store .cse7 |c_ULTIMATE.start_main_~b~0#1.base| .cse8) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse4 (store .cse8 .cse5 (+ .cse6 1)))) (or (= 3 (select (store (store .cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_458) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_460) .cse5)) (< v_ArrVal_458 (+ .cse6 (select (select (store .cse7 |c_ULTIMATE.start_main_~b~0#1.base| .cse4) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1))))))))) (or (forall ((v_ArrVal_453 Int) (v_ArrVal_460 Int) (v_ArrVal_458 Int)) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_453)))) (let ((.cse13 (store (select .cse10 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse12 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse9 (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| .cse13) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse11 (store .cse13 .cse12 (+ .cse9 1)))) (or (< v_ArrVal_458 (+ .cse9 (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| .cse11) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)) (= 3 (select (store (store .cse11 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_458) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_460) .cse12)))))))) (< 2147483647 .cse3)))))) is different from false [2021-12-07 01:40:54,683 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_450 Int)) (or (let ((.cse5 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (forall ((v_ArrVal_453 Int) (v_ArrVal_460 Int) (v_ArrVal_458 Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_453)))) (let ((.cse4 (store (select .cse1 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse0 (select (select (store .cse1 |c_ULTIMATE.start_main_~b~0#1.base| .cse4) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse2 (store .cse4 .cse3 (+ .cse0 1)))) (or (< v_ArrVal_458 (+ .cse0 (select (select (store .cse1 |c_ULTIMATE.start_main_~b~0#1.base| .cse2) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)) (= 3 (select (store (store .cse2 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_458) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_460) .cse3)))))))) (<= .cse5 2147483647)) (or (forall ((v_ArrVal_453 Int) (v_ArrVal_460 Int) (v_ArrVal_458 Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_453)))) (let ((.cse10 (store (select .cse7 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse9 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse6 (select (select (store .cse7 |c_ULTIMATE.start_main_~b~0#1.base| .cse10) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse8 (store .cse10 .cse9 (+ .cse6 1)))) (or (< v_ArrVal_458 (+ .cse6 (select (select (store .cse7 |c_ULTIMATE.start_main_~b~0#1.base| .cse8) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)) (= (select (store (store .cse8 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_458) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_460) .cse9) 3))))))) (< 2147483647 .cse5)))) (let ((.cse11 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse13 (* .cse11 8))) (and (or (<= .cse11 2147483647) (< v_ArrVal_450 (+ 2 (select .cse12 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse13 (- 34359738368)))))) (or (< v_ArrVal_450 (+ (select .cse12 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse13)) 2)) (< 2147483647 .cse11))))))) is different from false [2021-12-07 01:41:45,325 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_448 Int)) (or (let ((.cse2 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* .cse2 8))) (and (or (< v_ArrVal_448 (+ 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 34359738368))))) (<= .cse2 2147483647)) (or (< v_ArrVal_448 (+ 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)))) (< 2147483647 .cse2))))) (let ((.cse14 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (and (or (forall ((v_ArrVal_450 Int)) (or (< v_ArrVal_450 (+ v_ArrVal_448 2)) (let ((.cse8 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (forall ((v_ArrVal_453 Int) (v_ArrVal_460 Int) (v_ArrVal_458 Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_448) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_453)))) (let ((.cse7 (store (select .cse6 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~b~0#1.base| .cse7) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse3 (store .cse7 .cse4 (+ .cse5 1)))) (or (= 3 (select (store (store .cse3 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_458) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_460) .cse4)) (< v_ArrVal_458 (+ .cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)))))))) (<= .cse8 2147483647)) (or (forall ((v_ArrVal_453 Int) (v_ArrVal_460 Int) (v_ArrVal_458 Int)) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_448) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_453)))) (let ((.cse13 (store (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse10 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse12 (select (select (store .cse11 |c_ULTIMATE.start_main_~b~0#1.base| .cse13) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse9 (store .cse13 .cse10 (+ .cse12 1)))) (or (= 3 (select (store (store .cse9 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_458) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_460) .cse10)) (< v_ArrVal_458 (+ (select (select (store .cse11 |c_ULTIMATE.start_main_~b~0#1.base| .cse9) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse12 1)))))))) (< 2147483647 .cse8)))))) (< 2147483647 .cse14)) (or (forall ((v_ArrVal_450 Int)) (or (< v_ArrVal_450 (+ v_ArrVal_448 2)) (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (forall ((v_ArrVal_453 Int) (v_ArrVal_460 Int) (v_ArrVal_458 Int)) (let ((.cse18 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_448) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_453)))) (let ((.cse19 (store (select .cse18 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse16 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse17 (select (select (store .cse18 |c_ULTIMATE.start_main_~b~0#1.base| .cse19) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse15 (store .cse19 .cse16 (+ .cse17 1)))) (or (= 3 (select (store (store .cse15 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_458) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_460) .cse16)) (< v_ArrVal_458 (+ .cse17 (select (select (store .cse18 |c_ULTIMATE.start_main_~b~0#1.base| .cse15) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)))))))) (< 2147483647 .cse20)) (or (forall ((v_ArrVal_453 Int) (v_ArrVal_460 Int) (v_ArrVal_458 Int)) (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_448) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_453)))) (let ((.cse25 (store (select .cse23 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse22 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse24 (select (select (store .cse23 |c_ULTIMATE.start_main_~b~0#1.base| .cse25) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse21 (store .cse25 .cse22 (+ .cse24 1)))) (or (= (select (store (store .cse21 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_458) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_460) .cse22) 3) (< v_ArrVal_458 (+ (select (select (store .cse23 |c_ULTIMATE.start_main_~b~0#1.base| .cse21) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse24 1)))))))) (<= .cse20 2147483647)))))) (<= .cse14 2147483647)))))) is different from false [2021-12-07 01:42:41,639 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_448 Int)) (or (let ((.cse0 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (* .cse0 8))) (and (or (<= .cse0 2147483647) (< v_ArrVal_448 (+ 2 (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 (- 34359738368)))))) (or (< v_ArrVal_448 (+ (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) 2)) (< 2147483647 .cse0))))) (let ((.cse14 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (forall ((v_ArrVal_450 Int)) (or (< v_ArrVal_450 (+ v_ArrVal_448 2)) (let ((.cse3 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (and (or (< 2147483647 .cse3) (forall ((v_ArrVal_453 Int) (v_ArrVal_460 Int) (v_ArrVal_458 Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_448) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_453)))) (let ((.cse8 (store (select .cse4 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse7 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse6 (select (select (store .cse4 |c_ULTIMATE.start_main_~b~0#1.base| .cse8) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse5 (store .cse8 .cse7 (+ .cse6 1)))) (or (< v_ArrVal_458 (+ (select (select (store .cse4 |c_ULTIMATE.start_main_~b~0#1.base| .cse5) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse6 1)) (= 3 (select (store (store .cse5 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_458) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_460) .cse7))))))))) (or (<= .cse3 2147483647) (forall ((v_ArrVal_453 Int) (v_ArrVal_460 Int) (v_ArrVal_458 Int)) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_448) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8) (- 34359738368)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_453)))) (let ((.cse13 (store (select .cse12 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse10 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse11 (select (select (store .cse12 |c_ULTIMATE.start_main_~b~0#1.base| .cse13) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse9 (store .cse13 .cse10 (+ .cse11 1)))) (or (= 3 (select (store (store .cse9 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_458) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_460) .cse10)) (< v_ArrVal_458 (+ .cse11 (select (select (store .cse12 |c_ULTIMATE.start_main_~b~0#1.base| .cse9) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1))))))))))))) (<= .cse14 2147483647)) (or (forall ((v_ArrVal_450 Int)) (or (< v_ArrVal_450 (+ v_ArrVal_448 2)) (let ((.cse20 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (and (or (forall ((v_ArrVal_453 Int) (v_ArrVal_460 Int) (v_ArrVal_458 Int)) (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_448) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_453)))) (let ((.cse19 (store (select .cse16 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse18 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse15 (select (select (store .cse16 |c_ULTIMATE.start_main_~b~0#1.base| .cse19) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse17 (store .cse19 .cse18 (+ .cse15 1)))) (or (< v_ArrVal_458 (+ .cse15 (select (select (store .cse16 |c_ULTIMATE.start_main_~b~0#1.base| .cse17) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)) (= (select (store (store .cse17 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_458) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_460) .cse18) 3))))))) (< 2147483647 .cse20)) (or (<= .cse20 2147483647) (forall ((v_ArrVal_453 Int) (v_ArrVal_460 Int) (v_ArrVal_458 Int)) (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_448) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8) (- 34359738368)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_453)))) (let ((.cse25 (store (select .cse21 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse24 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse23 (select (select (store .cse21 |c_ULTIMATE.start_main_~b~0#1.base| .cse25) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse22 (store .cse25 .cse24 (+ .cse23 1)))) (or (< v_ArrVal_458 (+ (select (select (store .cse21 |c_ULTIMATE.start_main_~b~0#1.base| .cse22) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse23 1)) (= (select (store (store .cse22 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_458) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_460) .cse24) 3)))))))))))) (< 2147483647 .cse14)))))) is different from false [2021-12-07 01:42:45,071 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:42:45,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 3530402078 treesize of output 3526319926